Inventor

Eit Drent

Inventor

Amsterdam, NL

Overview

1981–2010

Patent span

Chemistry

Primary field (CPC C)

Patents· 214 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

C07Cprimary

C07CAcyclic or carbocyclic compounds35%

C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds24%

B01JChemical or physical processes, e.g. catalysis or colloid chemistry21%

C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium7%

Y02PClimate change mitigation technologies in the production or processing of goods5%

C07DHeterocyclic compounds3%

C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds2%

C07BGeneral methods of organic chemistry1%

C08CTreatment or chemical modification of rubbers1%

C08LCompositions of macromolecular compounds1%

PatentTitleYear

7,858,787'Process for producing olefins'2010 7,511,178'Process of preparing ethylene glycol'2009 7,491,859'Process for the telomerization of a conjugated diene, catalyst and bidentate ligand useful therein'2009 7,449,607'Process of preparing glycolaldehyde'2008 7,414,155'Process for the hydroformylation of an ethylenically unsaturated compound'2008 7,348,454'Process for the hydrocarboxylation of ethylenically unsaturated carboxylic acids'2008 7,273,959'Catalytic trimerization of olefinic monomers'2007 7,265,242'Process for the carbonylation of ethylenically or acetylenically unsaturated compounds'2007 7,250,538'Process for the hydroformylation of an ethylenically unsaturated compound'2007 7,208,606'Hydroformylation process for the conversion of an ethylenically unsaturated compound to an alcohol'2007 7,202,193'Process for the carbonylation of an ethylenically unsaturated compound and catalyst therefore'2007 7,186,868'Hydroformylation process for the conversion of an ethylenically unsaturated compound to an alcohol'2007 7,161,043'Process for the carbonylation of ethylenically unsaturated compounds and bidentate diphosphine composition used in this process'2007 7,135,542'Bidentate ligands for the carbonylation of unsaturated compounds'2006 7,098,369'Process for the production of primary alcohols'2006 7,056,854'Process for the carbonylation of ethylenically unsaturated compounds and bidentate diphosphine composition used in this process'2006 7,057,082'Process for the telomerization of a conjugated diene, catalyst and bidentate ligand useful therein'2006 7,026,473'Process for the carbonylation of pentenenitrile'2006 6,984,755'Processes for the preparation of a carboxylic anhydride and use of the carboxylic anhydride as an acylation agent'2006 6,835,850'Process for the carbonylation of a conjugated diene'2004 6,818,797'Process for the hydroformylation of ethylenically unsaturated compounds in the presence of an acid and a mono tert-phosphine'2004 6,806,391'Process for the carbonylation of ethylenically unsaturated compounds and bidentate diphosphine composition used in this process'2004 6,794,553'Process for the telomerization of a conjugated diene, catalyst and bidentate ligand useful therein'2004 6,743,911'Process for the carbonylation of pentenenitrile'2004 6,737,542'Process for the carbonylation of conjugated dienes'2004 6,706,912'Process for the carbonylation of ethylenically unsaturated compounds'2004 6,639,091'Bidentate ligand, catalyst system containing such ligand and a process for the carbonylation of ethylenically or acetylenically unsaturated compounds using such a catalyst system'2003 6,376,723'Process for the carbonylation of formaldehyde'2002 6,187,962'Hydroformylation process'2001 6,156,934'Diphosphines'2000 6,156,936'Hydroformylation of olefin feeds containing dienes'2000 6,103,927'Process for the carbonylation of ethylenically unsaturated compounds'2000 6,080,898'Hydrogenolysis of glycerol'2000 5,994,591'Hydroformylation process'1999 5,952,522'Process for the carbonylation of acetylenically unsaturated compounds'1999 5,908,958'Process for the carbonylation of acetylenically unsaturated compounds'1999 5,780,684'Hydroformylation reactions'1998 5,747,638'Process for the preparation of a copolymer of carbon monoxide'1998 5,719,313'Carbonylation catalyst system and a process for the carbonylation of acetylenically unsaturated compounds'1998 5,719,258'Polymer of an acetylenically unsaturated compound'1998 5,688,909'Catalyst composition and process for the preparation of copolymers of carbon monoxide and an olefinically unsaturated compound'1997 5,688,972'Preparation of acetals'1997 5,670,440'Preparation of polymers of carbon monoxide and an aliphatic alpha-olefin'1997 5,608,001'Preparation of polymers of carbon monoxide and an aliphatic alpha-olefin'1997 5,488,175'Hydroformylation process'1996 5,488,096'Copolymers of carbon monoxide and an olefinically unsaturated compound and process for the preparation thereof'1996 5,488,174'Hydroformylation process'1996 5,436,356'Carbonylation process'1995 5,414,109'Process for the carbonylation of acetylenically unsaturated compounds'1995 5,373,071'Polymerization of acetylenes'1994 5,369,074'Catalyst composition for polymerizing carbon monoxide and ethylenically unsaturated hydrocarbons'1994 5,369,075'Polymerization process'1994 5,364,970'Process for the hydroformylation of unsaturated carbonyl compounds'1994 5,359,028'Polyketone polymers'1994 5,359,081'Carbonylation of epoxides'1994 5,352,765'Preparation of copolymers of carbon monoxide and olefinically unsaturated compounds'1994 5,350,876'Carbonylation of conjugated dienes'1994 5,344,961'Carbonylation process'1994 5,330,952'Catalyst compositions'1994 5,310,948'Carbonylation of epoxides'1994 5,304,674'Preparation of alkanedioic derivatives'1994 5,292,699'Polymerization process'1994 5,281,744'Process for the preparation of nitriles'1994 5,247,064'Polymerization of CO/olefin with P bidentate ligand'1993 5,245,123'Vapor phase polymerization of co/olefin with palladium compound, Lewis acid and bidentate ligand'1993 5,229,475'CO/olefin polymerization with carboxylic acid or phenol'1993 5,227,561'Co-dimerization of vinyl aromatics with .alpha.-monoolefins'1993 5,227,465'Polyketone polymer preparation in the absence of hydrogen'1993 5,225,523'Polyketone polymer preparation with tetra alkyl bis phosphine ligand and hydrogen'1993 5,215,647'Oil compositions'1993 5,216,120'Polymerization of co/olefin with catalyst comprising palladium compound, Lewis acid and Bronsted acid'1993 5,214,220'Process for the preparation of alcohols'1993 5,210,176'Polymerization of CO/non-conjugated diolefin'1993 5,210,177'Polymerization of CO/olefin with tetra ethyl diphosphine'1993 5,210,280'Process for the preparation of alkanedioic acid derivatives'1993 5,206,342'Polymerization of carbon monoxide/non conjugated alkenyl benzene'1993 5,179,225'Carbonylation catalyst system'1993 5,177,253'Process for the preparation of alpha,beta-olefinically unsaturated compounds'1993 5,177,184'Polymerization of co/norbornene compound with molar ratio of n ligand to anion greater than 4'1993 5,175,244'Polymerization of co/olefin with diphosphine containing heterocyclic/alkyl substituents'1992 5,166,411'Carbonylation catalyst system'1992 5,166,116'Carbonylation catalyst system'1992 5,162,493'Polymerization of co/olefin/functionally substituted olefin with tetra alkyl diphosphine'1992 5,158,921'Carbonylation catalyst and process'1992 5,149,868'Carbonylation process'1992 5,128,438'Polymerization of carbon monoxide and ethylenically unsaturated carboxylic acid'1992 5,128,475'Preparation of amides'1992 5,124,300'Carbonylation catalyst system'1992 5,116,936'Preparation of poly anhydride from CO/non conjugated diene/dicarboxylic acid.'1992 5,106,952'Carbon monoxide/norbornene copolymer having spiroketal structural units'1992 5,103,043'Carbonylation catalyst system'1992 5,101,077'Process for the preparation of carbonyl compounds'1992 5,099,062'Carbonylation catalyst and process'1992 5,096,965'Polymeric compositions'1992 5,091,506'Polymerization of carbon monoxide/norbornene with P bidentate ligand'1992 5,091,587'Process for the preparation of ketones'1992 5,071,926'Polymeric polyalcohols'1991 5,070,184'Treatment of carbon monoxide/olefin copolymer with solvent'1991 5,066,778'Carbon monoxide/cyclopenten copolymer and preparation with aromatic dinitro compound'1991 5,061,782'Unsaturated polymerization of CO and bicyclic carboxylic acid compound bidentate ligand of nitrogen'1991 5,061,785'Polymerization of carbon monoxide/olefin with tertiary aliphatic monophosphine catalyst'1991 5,059,676'Polymers of carbon monoxide and bicyclic unsaturated carboxylic acid compound'1991 5,059,678'Polymerization of olefin/carbon monoxide with palladium salt, bidentate ligand and carboxylic acid ester or anhydride'1991 5,049,650'Polymerization of CO/non-conjugated diene/diol'1991 5,039,763'Polymeric mixture of polyketone polymers'1991 5,034,368'Process for the preparation of carboxylic acids or esters thereof'1991 5,030,712'Polymerization of CO/olefin with aryl phosphine sulfide'1991 5,028,734'Process for the selective preparation of alkenecarboxylic acid derivatives'1991 5,028,576'Carbonylation catalyst system'1991 5,025,092'Polymerization of carbon monoxide with ethylenically unsaturated alcohol'1991 5,019,645'Process of reducing stereoregular character of carbon monoxide/olefin copolymer with organic base'1991 5,006,640'Polyketone with unsaturated terminal groups'1991 4,992,479'Process for the preparation of methanol and composition suitable for use as a catalyst in said process'1991 4,975,404'Process for the production of methanol and catalyst composition for said process'1990 4,970,266'Process for the preparation of functionalized polymers'1990 4,970,294'.alpha.-olefin/carbon monoxide copolymers and catalyst and process for making'1990 4,970,185'Process for the production of methanol and a composition suitable for use as a catalyst in said process'1990 4,965,341'Polymerization of co/olefin with catalyst comprising sulfur bidentate ligand'1990 4,960,857'Polyketone polymer from carbon monoxide and bicyclo carboxylic acid compound'1990 4,960,926'Process for the carbonylation of olefinically unsaturated compounds with a palladium catalyst'1990 4,960,906'Process for the preparation of lactones from higher alkenols'1990 4,948,865'Terpolymer of carbon monoxide, olefin and functionally substituted olefin'1990 4,945,179'Process for the preparation of esters of carboxylic acids and catalytic system for use therein'1990 4,940,683'Polymerization process'1990 4,940,775'Polyketone from carbon monoxide/monoethylenically unsaturated hydrocarbon/non-conjugated alkadiene'1990 4,940,787'Process for the carbonylation of acetylenic unsaturated compounds'1990 4,940,777'Carbon monoxide/1,2-alkadiene copolymer'1990 4,939,307'Process for hydrogenation of esters into alcohols'1990 4,935,398'Process for the production of methanol and a composition suitable for use as a catalyst in said process'1990 4,927,892'Process for the preparation of functionalized polymers'1990 4,921,938'Catalytic, diluent preparation of poly ketone having unsaturated terminal group'1990 4,921,937'Terpolymer from olefin and carbon monoxide and preparation thereof'1990 4,914,136'Process for the production of methanol and catalyst composition for said process'1990 4,904,759'Linear alternating polymer of carbon monoxide, olefin and conjugated diolefin'1990 4,902,822'Process for the preparation of carboxylic acids or esters thereof'1990 4,894,435'Polymerization of olefin/carbon monoxide with non-transition metal salt, bidentate p ligand and carboxylic acid ester'1990 4,889,913'Polymerization of olefin/CO mixture with catalyst composition comprising phenolic compound'1989 4,888,361'Process for the production of methanol and catalyst composition for said process'1989 4,880,903'Polyketone from carbon monoxide and mixture of olefins'1989 4,879,417'Process for carbonylation of alkenes to ketones'1989 4,876,401'Process for the preparation of alkanediols'1989 4,876,286'Process for the production of methanol and a composition suitable for use as a catalyst in said process'1989 4,874,736'Catalyst compositions and processes for polymerizing carbon monoxide and olefinically unsaturated hydrocarbons'1989 4,873,267'Process for the production of methanol and a composition suitable for use as a catalyst in said process'1989 4,868,345'Process for hydrogenation of esters into alcohols'1989 4,868,221'Process for the production of methanol and a composition suitable for use as a catalyst in said process'1989 4,868,328'Selective oxidative carbonylation of conjugated dienes'1989 4,868,282'Polyketone preparation from regulated quotient mixture of olefins'1989 4,861,912'Process for the preparation of a diester of adipic acid'1989 4,859,646'Process for the dimerization of olefins'1989 4,859,764'Copolymerization of carbon monoxide and olefin with nitrogen containing phosphine ligand catalyst'1989 4,859,644'Catalyst compositions and a process for polymerizing carbon monoxide and olefins'1989 4,859,645'Catalyst compositions and a process for polymerizing carbon monoxide and olefins'1989 4,855,399'Carbon monoxide/olefin co-polymerization process with phosphino substituted sulfonic acid catalyst'1989 4,851,582'Catalyst compositions and a process for polymerizing carbon monoxide and olefins'1989 4,851,379'Catalyst compositions and a process for polymerizing carbon monoxide and olefins'1989 4,849,542'Process for the preparation of oxo-alkanedioic acids or diesters thereof'1989 4,843,145'Catalytic polymerization of CO/olefin with ortho polar substituted aryl bidentate p ligand'1989 4,841,020'Catalytic polymerization of carbon monoxide with functional substituted ethylenically unsaturated monomer'1989 4,835,250'Catalytic preparation of polyketone from carbon monoxide and olefin'1989 4,831,114'Polymerization of carbon monoxide and olefin with acid catalyst'1989 4,831,113'Process for polymerizing carbon monoxide and olefins with a quinone'1989 4,831,187'Process for the preparation of esters of alpha-ethylenically unsaturated alcohols and alpha-ethylenically unsaturated carboxylic acids'1989 4,824,935'Process for polymerizing carbon monoxide and olefins with ether'1989 4,824,934'Process for polymerizing carbon monoxide with a quinone'1989 4,824,817'Catalyst for the carbonylation of conjugated dienes'1989 4,820,802'Improved process of preparing carbon monoxide/olefin copolymer with ortho substituted phosphine catalyst composition.'1989 4,818,810'Catalytic process for the preparation of polyketones from carbon monoxide and ethylenically unsaturated hydrocarbon'1989 4,818,811'Terpolymer of carbon monoxide and ethylenically unsaturated monomers'1989 4,812,433'Process for the production of methanol and a composition suitable for use as a catalyst in said process'1989 4,810,774'Catalytic copolymerization of CO/olefin with ketone additive.'1989 4,808,697'Catalytic process for preparing polymers of sulfur dioxide and olefin'1989 4,806,647'Process for the dimerization of olefins'1989 4,806,630'Catalytic polymerization of carbon monoxide and olefin, with organo nitro or organo nitrite compound additive'1989 4,806,693'Process for the preparation of unsaturated ketones'1989 4,804,739'Process for preparing carbon monoxide polymer with quaternary phosphonium compound bidentate ligand'1989 4,804,738'Catalytic preparation of carbon monoxide/ethylene/secondary ethylenically unsaturated hydrocarbon terpolymer'1989 4,794,165'Carbon monoxide/olefin polymerization with bidentate ligand containing'1988 4,789,756'Process for the preparation of an ester of a 3-aryl-substituted acrylic acid'1988 4,788,279'Catalyst compositions and processes for polymerizing carbon monoxide and olefinically unsaturated hydrocarbons'1988 4,786,714'Catalytic process for polymerizing carbon monoxide and olefin(s) with nitrogen bidentate ligand'1988 4,786,443'Process for the carbonylation of olefinically unsaturated compounds with a palladium catalyst'1988 4,777,261'Preparation of 2-benzoxazolones'1988 4,740,625'Catalyst compositions and a process for polymerizing carbon monoxide and olefins'1988 4,739,107'Process for the preparation of a diester of a dicarboxylic acid'1988 4,739,110'Process for the carbonylation of allenically unsaturated compounds'1988 4,739,109'Process for the carbonylation of acetylenically unsaturated compounds'1988 4,731,487'Process for the preparation of aldehydes'1988 4,731,467'Process for the preparation of a diester of a 2-butenedioic acid'1988 4,731,202'Process for the hydrocarboxylation of acetylenically unsaturated compounds'1988 4,730,080'Process for the preparation of diesters of alkanedioic acids'1988 4,727,195'Process for the preparation of unsaturated ketones'1988 4,692,548'Process for the preparation of unsaturated compounds'1987 4,691,047'Preparation of carboxylic di-esters or acids'1987 4,670,582'Process for the preparation of unsaturated carboxylate esters'1987 4,664,851'Process for the co-production of carboxylic acids and carboxylic acid esters'1987 4,642,371'Process for the preparation of diesters of dicarboxylic acids'1987 4,640,802'Process for the co-production of carboxylic acids and carboxylic acid esters'1987 4,634,793'Process for the dimerization of olefins'1987 4,602,105'Process for the preparation of alpha-haloalkyl esters'1986 4,599,476'Process for the preparation of dimerization products from olefins'1986 4,590,311'Process for the preparation of 1,4-butanediol'1986 4,562,284'Process for the preparation of carboxylic acids'1985 4,536,354'Process for the preparation of carboxylic anhydrides'1985 4,474,978'Preparation of carbamates'1984 4,461,910'Process for the co-production of dicarboxylates and acids'1984 4,429,150'Manufacture of ethylidene diacetate'1984 4,426,331'Preparation of carbonate esters in the presence of sulfones'1984 4,414,421'Process for the preparation of glycol aldehyde'1983 4,382,148'Process for the preparation of glycol aldehyde'1983 4,356,126'Carbonylation of alkanols and/or aliphatic ethers'1982 4,311,862'Preparation of unsaturated ethers'1982 4,297,517'Preparation of carbonyl compounds from allylethers'1981 4,249,031'Process for the preparation of a hydrocarbon mixture'1981

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1981–2010Patents assigned to SHELL OIL CO (212)· patent assignee history

1981–2010Based in Amsterdam, NL· patent location history

1991Based in Amsterdmn, NL· patent location history

1992Patents assigned to SHELL OIL COMPNAY (1)· patent assignee history

1998Based in Badhuisweg, NL· patent location history

2004Patents assigned to DSM NV (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
SHELL OIL CO	212	1981–2010
DSM NV	1	2004
SHELL OIL COMPNAY	1	1992

Locations

Location	Patents	Span
Amsterdam, NL	212	1981–2010
Badhuisweg, NL	1	1998
Amsterdmn, NL	1	1991