Inventor

Hans-Josef Buysch

Inventor

Krefeld, DE

Overview

1976–2003

Patent span

Chemistry

Primary field (CPC C)

Patents· 196 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 bonds14%

C07DHeterocyclic compounds9%

B01JChemical or physical processes, e.g. catalysis or colloid chemistry7%

C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients7%

C08LCompositions of macromolecular compounds5%

Y02PClimate change mitigation technologies in the production or processing of goods4%

C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium2%

C08BPolysaccharides2%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests2%

PatentTitleYear

6,562,463'One-component stoving composition and use thereof'2003 6,548,445'Supported catalysts containing a platinum metal and process for preparing diaryl carbonates'2003 6,486,363'Process for the manufacture of bis(4-hydroxyaryl)alkanes'2002 6,428,854'One-component stoving composition and use thereof'2002 6,350,920'Method for preparing polyether polyols'2002 6,307,111'Method for continuous production of dihydroxydiarylalkanes'2001 6,294,702'Method for continuous production of dihydroxydiphenylalkanes'2001 6,211,417'Process for preparing bis-(4-hydroxyaryl) alkanes'2001 6,191,316'Method for processing mother liquors from the production of bisphenol'2001 6,175,017'Process for the production of aryl carbonates'2001 6,156,919'Process for the preparation of aliphatic oligocarbonate diols from dimethyl carbonate and aliphatic diols'2000 6,111,140'Ru--Pd halogen-free catalyzers and method for producing cycloaliphatic amines'2000 6,080,890'Production of aromatic amines by means of novel hydrogenation catalysts'2000 6,071,843'Process for reactivating catalyst systems containing a platinum group metal'2000 6,043,394'Process for producing aromatic amines by gaseous phase hydrogenation'2000 6,001,768'Supported catalysts containing a platinum metal and process for preparing diaryl carbonates'1999 RE036432'Process for the purification of polycarbonate and polyester carbonate solutions'1999 5,965,472'Recovery of catalyst systems from diaryl carbonate-containing reaction solutions by suspension crystallization'1999 5,962,365'Process for the manufacture of aromatic amines by gas-phase hydrogenation and catalyst useful thereof'1999 5,925,791'Process for producing 4-aminodiphenylamine'1999 5,900,501'Process for the continuous production of aryl carbonates'1999 5,877,350'Process for the production of aromatic amines'1999 5,861,107'Process for the preparation of aliphatic carbonates having a six-membered ring'1999 5,856,554'Process for producing diaryl carbonates'1999 5,856,516'Process for the preparation of carbazole'1999 5,831,111'Process for the continuous production of aryl carbonates'1998 5,824,816'Recovery of catalyst systems from diarylcarbonate-containing reaction mixtures by melt crystallization'1998 5,821,377'Process for the continuous production of diaryl carbonates'1998 5,808,157'Process for producing aromatic amines'1998 5,780,690'Bisphenol synthesis on modified ion-exchange resins using specially purified carbonyl compounds'1998 5,763,717'Process for preparing hydroxybiphenyl'1998 5,750,801'Process for the continuous preparation of benzyl alcohol'1998 5,739,258'Process for preparing diaryl carbonates and the polycarbonates obtainable therefrom'1998 5,734,004'Process for the purification of carbonic acid diaryl ester'1998 5,728,897'Process for the preparation of benzyl alcohol'1998 5,723,694'Process for preparing monomethylated or dimethylated phenols'1998 5,717,127'Process for preparing 6-oxo-(6H)-dibenz-›C,E! ›1,2!-oxaphosphorins'1998 5,712,406'Method of extractive separation of diaryl carbonates and the original aromatic hydroxy compounds from reaction solutions'1998 5,710,310'Process for the continuous production of diaryl carbonates'1998 5,688,891'T,3-dioxan-2-one group-containing oligourethanes'1997 5,679,858'Process for the manufacture of aromatic amines by gas-phase hydrogenation and catalyst useful thereof'1997 5,679,825'Process for the production of aryl carbonates'1997 5,670,029'Process for the separation of a mixture of benzyl chloride, benzyl alcohol, dibenzyl ether and aqueous hydrochloric acid'1997 5,663,408'Process for preparing diaryl carbonates'1997 5,652,275'Process for the chemical recycling of polycarbonates'1997 5,650,530'Process for preparing 6-oxo-(6H)-dibenz-[c,e][1,2]-oxaphosphorins (ODOPs)'1997 5,625,091'Process for the production of diaryl carbonates'1997 5,625,097'Process for preparing diphenylamines and catalysts usable for this purpose'1997 5,614,616'Process for the production of polysaccharides'1997 5,602,284'Process for separating off aminobiphenyl from diphenylamine'1997 5,602,271'Process for the preparation of aryl carbonates'1997 5,585,471'Method for preparing a mixture of .alpha.- and .beta.-chloroethyl-glucopyranose'1996 5,583,251'Process for the production of isocyanates and for the production of light-colored foams therefrom'1996 5,550,278'Process for working up the liquid reaction products from the cu-catalysed preparation of dimethyl carbonate'1996 5,527,942'Process for the production of aryl carbonates'1996 5,523,451'Process for the continuous preparation of aryl carbonates'1996 5,508,442'Reactor and continuous process to be carried out therewith for the preparation of ethylene glycol carbonate and propylene glycol carbonate'1996 5,502,232'Process for preparing diaryl carbonates'1996 5,498,742'Process for the continuous preparation of diaryl carbonates'1996 5,495,038'Process for the purification of diphenyl carbonate'1996 5,489,696'Process for purifying ethylene glycol carbonate (EGC) by adsorption on activated carbon'1996 5,484,576'Fixed bed reactors having a short catalyst bed in the direction of flow'1996 5,484,903'Process for the production of polysaccharide carbonates'1996 5,478,961'Process for preparting aryl carbonates'1995 5,473,094'Process for preparing aryl carbonates'1995 5,463,102'Process for the continuous production of aryl carbonates'1995 5,463,034'Polysaccharides, process for their preparation and their use'1995 5,449,791'Process for the preparation of propylene glycol carbonate'1995 5,440,066'Process for splitting polycarbonates'1995 5,420,241'Process for the purification of polycarbonate and polyester carbonate solutions'1995 5,399,600'Stabilized, flame resistant polycarbonate moulding compounds'1995 5,395,976'Process for the preparation of a mixture of cyclohexanone and cyclohexanol'1995 5,391,767'Process for the preparation of alkylene carbonates'1995 5,391,802'Process for cleaving polycarbonates into bisphenols and diaryl carbonates'1995 5,386,067'Process for separating mixtures of m- and p-dichlorobenzene'1995 5,371,294'Process for the preparation of a mixture of cyclohexylamine and dicyclohexylamine'1994 5,362,901'Process for the preparation of organic carbonates having at least one aromatic ester group'1994 5,359,118'Process for the continuous preparation of dialkyl carbonates'1994 5,354,923'Process for the preparation of aromatic carbonic diesters'1994 5,350,862'Process for the preparation of ethylene glycol carbonate'1994 5,344,987'Process for preparing diphenylamines'1994 5,344,954'Process for the preparation of diaryl carbonates'1994 5,338,885'Process for the preparation of diphenylamines'1994 5,338,861'Process for the preparation of N-substituted lactams'1994 5,334,742'Process for the continuous preparation of diaryl carbonates from dialkyl carbonates'1994 5,324,777'Process for the production of polymers containing ammonium groups'1994 5,324,776'Process for the preparation of polymers containing amino groups'1994 5,314,986'Phenolic resins from bisphenol a residual resins and mixtures of chloro-substituted hydrocarbons, and the use of specific phenolic resins as homogenizers for rubber vulcanizates'1994 5,310,849'Amino and ammonium isocyanates, a process for their preparation, their use for the production of polymers containing ammonium groups and the polymers thus produced'1994 5,302,774'Process for the production of bisphenols'1994 5,300,706'Process for the preparation of d,1-menthol'1994 5,298,659'Method for the preparation of azomethines'1994 5,292,712'Thermoreactive recording material having particular stability'1994 5,292,953'Process for the preparation of azomethines'1994 5,284,965'Process for preparing aromatic carbonates'1994 5,274,163'Process for the preparation of dialkyl carbonates'1993 5,270,385'Antistatic, thermoplastic moulding compounds based on aromatic polycarbonates and aromatic vinyl polymers'1993 5,266,716'Process for the splitting of polycarbonates'1993 5,258,554'Process for monobenzylation of p-substituted phenols'1993 5,250,619'Process for the preparation of high molecular weight polyamides'1993 5,233,037'Production of caprolactam by thermal depolymerization of polyamide 6'1993 5,231,212'Process for the continuous preparation of dialkyl carbonates'1993 5,221,718'Process for the preparation of copolymers containing nitrile groups based on ethylenically unsaturated monomers'1993 5,219,976'Process for the preparation of phenol resins using by-products of the chlorination of butadiene as reactants'1993 5,218,135'Process for the preparation of dialkyl carbonates'1993 5,214,100'Use of certain phenolic resins for reinforcing rubber vulcanizates'1993 5,196,592'Process for the preparation of diphenylamines'1993 5,185,467'Process for the preparation of 2,2-bis-(aminophenyl)-propane'1993 5,153,291'Trialkylsilyloxy-1,1-diphenyl ethylenes and polymers produced therewith'1992 5,149,856'Process for the preparation of carbonic acid diesters containing at least one aromatic ester group'1992 5,137,949'Polydiorganosiloxane-polycarbonate block co-codensates with improved protection against UV light'1992 5,134,220'Polyester and polyester carbonate based on 3,8-dihydroxy-5a, 10b-diphenylcoumarano-2\',3\',2,3-coumarane'1992 5,128,437'Polycarbonate from bi(tetrahydrofuran)di phenol'1992 5,108,835'Coextruded double walled sheet of linear polycarbonate resin'1992 5,099,031'Process for the preparation of di- and trialkyl-4\'-phthalimidomethylfurocoumarins'1992 5,087,754'Process for the preparation of N,N-dialkylaniline'1992 5,084,524'Block copolymers based on cyclic aliphatic carbonates and/or esters on the one hand and cyclic aromatic carbonates on the other hand'1992 5,071,943'Process for the isolation of tetrachlorobutane and for the production of phenolic resins from mixtures of chlorine-substituted hydrocarbons'1991 5,071,921'Thermoplastic block copolymers based on cyclic carbonates or esters'1991 5,072,017'Process for the preparation of P-substituted O-benzylphenols'1991 5,068,321'Carbonic acid esters of polysaccharides and a process for their production'1991 5,068,434'Process for the preparation of N-alkylated anilines'1991 5,064,899'Antistatic, thermoplastic moulding compounds based on aromatic vinyl polymers'1991 5,064,885'Stabilized aliphatic polycarbonates'1991 5,061,752'Antistatic, thermoplastic moulding compounds based on aromatic vinyl polymers II'1991 5,059,643'Stabilized polyamides'1991 5,055,617'Process for the preparation of N-alkylated anilines'1991 5,053,566'Process for the preparation of oligophenyls dihalogenated in the 4,4\'-position'1991 5,053,565'Process for the preparation of p-chlorotoluene'1991 5,030,770'Process for the preparation of thymol'1991 5,023,346'Process for the production of cyclic carbonic acid esters'1991 5,001,177'Branched thermoplastic polycarbonates having improved protection against UV light'1991 4,966,958'Process for the preparation of aromatic polyesters'1990 4,960,943'Process for the preparation of phenylketones etherified in the 4-position'1990 4,956,485'Trialkylsilyloxy-1,1-diphenyl ethylenes and polymers produced therewith'1990 4,950,817'Process for the preparation of 4,4\'-dihalobiphenyls'1990 4,940,817'Process for the preparation of n-alkylanilines'1990 4,920,166'Flame-resistant, antistatic polycarbonate molding compositions'1990 4,918,232'Process for separating aniline derivatives'1990 4,897,436'New Stabilizers and their use for the production of stabilized polyamides and rubber materials'1990 4,883,835'Flame resistant antistatic polycarbonate moulding compounds'1989 4,879,367'Process for the preparation of aliphatic polycarbonates with alkoxy silane initiator'1989 4,877,825'Elasthane fibers stabilized against environmental influences'1989 4,861,878'1H-pyrido-(2,3-b) (1,4)-thiazines'1989 4,851,550'Process for the preparation of cyclic aliphatic orthocarbonic esters new cyclic orthocarbonic esters'1989 4,839,421'Antistatic, thermoplastic moulding compound based on polycarbonates and aromatic vinyl polymers'1989 4,816,576'Sulphonic acid amidamines'1989 4,812,591'Process for the preparation of bisphenol-bisacrylates'1989 4,784,997'1-H-pyrido-[3,2-b][1,4]-thiazine'1988 4,764,310'Process for the preparation of aromatic carboxylic acid chlorides'1988 4,754,017'Process for the preparation of linear aliphatic polycarbonate from cyclic aliphatic carbonate'1988 4,754,066'Age protection agents, the production thereof and the polymers which contain them'1988 4,749,755'Impact-resistant thermoplastic polyester compositions of low melt viscosity, process for their preparation, and their use for the production of mouldings'1988 4,707,539'Process for the preparation of thermosetting aliphatic polycarbonate with quaternary salt catalyst'1987 4,694,065'Process for the production of duromeric aliphatic polycarbonates'1987 4,687,830'Process for the production of light-stable, solvent-resistant polyurethane-urea elastomer coatings by reactive coating'1987 4,656,228'Polyamides having high notched impact strength and high fluidity in the molten state'1987 4,654,387'Antiagers and polymers containing them'1987 4,633,016'Diphenylamine age resisters for rubber'1986 4,627,929'Stabilized lubricants based on polyethers'1986 4,608,207'Dialkyl 2-alkylcarbonatoethanephosphonates'1986 4,608,399'Stabilizer-containing reactive components for pu-foams, new stabilizers and a process for producing these stabilizers'1986 4,587,347'N-phenyl-N\'-vinylethyleneureas'1986 4,568,755'Chlorocarbonic esters and polycyclic carbonic esters obtainable therefrom'1986 4,565,834'Stabilizer-containing reactive components for pu-foams, new stabilizers and a process for producing these stabilizers'1986 4,551,495'Weather-resistant polyamides'1985 4,511,722'Process for preparing cyclic N-vinylacylamines'1985 4,501,905'Cyclic carbonic acid derivatives'1985 4,440,937'Cyclic carbonic acid derivatives'1984 4,434,105'Process for the preparation of dialkyl carbonates'1984 4,431,795'Copolymers of cyclic carbonic acid esters and lactams and their production'1984 4,430,452'Stabilizer-containing reactive components for PU-foams, new stabilizers and a process for producing these stabilizers'1984 4,426,475'Stabilized polyamides'1984 4,415,692'Stabilized thermoplastic moulding compositions'1983 4,381,359'Stabilized thermoplastic moulding compositions'1983 4,381,404'Process for the production of N,O-disubstituted urethanes and use thereof as starting materials for the production of organic isocyanates'1983 4,377,670'Copolymers based on aliphatic polycarbonates and lactams'1983 4,348,495'Phosphorous acid esters and their use for stabilizing polyamides'1982 4,335,051'Process for the preparation of dimethyl carbonate'1982 4,330,665'Process for the preparation of aromatic polycarbonates'1982 4,307,032'Process for the preparation of dialkyl carbonates'1981 4,293,687'Tetraalkylated biscyclohexylamine derivatives'1981 4,263,162'Cyanoethylated polyamide amines as hardeners for polyepoxides'1981 4,252,750'Cyclic phosphorous acid esters'1981 4,252,737'Process for the production of aromatic carbonic acid esters'1981 4,181,676'Process for the preparation of dialkyl carbonates'1980 4,116,932'Synthetic polymer compositions stabilized against discoloration and degradation'1978 4,105,641'Process for the preparation of aliphatic polycarbonates and polyurethanes therefrom'1978 4,089,901'Process for converting polyaminopolyaryl-methanes into diaminodiarylmethanes'1978 4,083,870'Process for converting polyaminopolyaryl-methanes into diaminodiarylmethanes'1978 4,073,746'Mixtures of .alpha.,.alpha.\'-bis-(2-hydroxy-3,5-dialkylphenyl)-p-and -m-diisopropylbenzenes, a process for the preparation thereof and the use thereof as stabilizers'1978 4,054,597'Thiodiglycol polycarbonates'1977 4,044,060'Process for preparing geminal dihalides'1977 4,044,058'Process for the preparation of .alpha.,.alpha.,.alpha.\',.alpha.\'-tetramethylphenylene biscarbinols'1977 4,012,406'Process for the preparation of diaryl carbonates'1977 3,979,462'Condensation resins of phenols and .alpha.,.alpha.\'-dihydroxy-diisopropyl benzenes'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–2003Patents assigned to BAYER AG (188)· patent assignee history

1976–2003Based in Krefeld, DE· patent location history

1991–1997Patents assigned to WOLFF WALSRODE AG (8)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
BAYER AG	188	1976–2003
WOLFF WALSRODE AG	8	1991–1997

Locations

Location	Patents	Span
Krefeld, DE	196	1976–2003