Inventor

Eckhard Stroefer

Inventor

Mannheim, DE

Overview

1987–2019

Patent span

Chemistry

Primary field (CPC C)

Patents· 69 as inventor

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

C07Cprimary

C07CAcyclic or carbocyclic compounds48%

C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds9%

B01DSeparation7%

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

C07DHeterocyclic compounds7%

C01BNon-metallic elements5%

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

C07BGeneral methods of organic chemistry3%

B01FMixing, e.g. dissolving, emulsifying or dispersing2%

C09DCoating compositions, e.g. paints, varnishes or lacquers1%

PatentTitleYear

10,377,689Process for preparing polyoxymethylene dimethyl ethers from formaldehyde and methanol in aqueous solutions2019 9,079,822'Process for the preparation of nitrated aromatics and mixtures thereof'2015 9,061,971'Method for purifying residues containing isocyanates'2015 9,006,481'Process and apparatus for preparing isocyanates'2015 9,000,213'Process for coproducing di- and/or polyisocyanates and glycols'2015 8,933,262'Process for preparing polyisocyanates from biomass'2015 8,859,805'Process for preparing isocyanates'2014 8,853,443'Process for preparing an isocyanate'2014 8,841,480'Process for the preparation of light-colored iocyanates of a diphenylmethanediisocyanate series'2014 8,835,673'Process for preparing isocyanates'2014 8,829,232'Process for preparing aromatic isocyanates'2014 8,822,718'Process for preparing isocyanates by thermally cleaving carbamates'2014 8,772,535'Process for preparing isocyanates'2014 8,759,569'Process for the production of isocyanates, preferably diisocyanates and polyisocyanates with solvent recirculation'2014 8,748,655'Process for preparing light-coloured isocyanates of the diphenylmethane series'2014 8,710,267'Process for preparing MDA via the stage of the aminal'2014 8,686,182'Process for preparing isocyanates and/or polyisocyanates'2014 8,680,333'Process for the preparation of aromatic formamides'2014 8,680,323'Process for preparing isocyanates by thermal dissociation of carbamates'2014 8,614,352'Method for producing color-stable MDA and MDI'2013 8,592,637'Process for preparing mononitrated organic compounds'2013 8,546,605'Process for the preparation of isocyanates'2013 8,546,606'Method for producing polyisocyanates'2013 8,530,678'Trioxane production method wherein a side aqueous flow is deducted at a first distillation stage'2013 8,519,179'Method of measuring entry of water into phosgene-conducting plants'2013 8,492,580'Process for preparing isocyanates'2013 8,450,507'Integrated method for the preparation of trioxane from formaldehyde'2013 8,440,856'Method for treating residues from the production of isocyanates'2013 8,436,204'Method for producing isocyanates'2013 8,378,144'Process for preparing polyoxymethylene homopolymers or copolymers by homopolymerization or copolymerization of trioxane, starting from methanol'2013 8,372,993'Method for separating trioxane from a trioxane/formaldehyde/water mixture by means of pressure change rectification'2013 8,350,063'Method for separating tioxane from a trioxane/formaldehyde/water mixture by means of pressure change rectification'2013 8,288,584'Process for preparing isocyanates'2012 8,273,915'Process for preparing isocyanates'2012 8,258,337'Method for producing isocyanates'2012 8,212,069'Process for preparing isocyanates'2012 8,193,385'Method for producing isocyanates'2012 8,168,818'Method for producing isocyanates'2012 8,097,232'Method for producing chlorine'2012 8,088,944'Method for the purification of isocyanates'2012 8,044,166'Process for preparing pentamethylene 1,5-diisocyanate'2011 8,026,387'Method for producing isocyanates'2011 7,999,140'Method for the production of polyoxymethylene dialkyl ethers from trioxan and dialkylethers'2011 7,994,361'Moderate-pressure gas phase phosgenation'2011 7,927,080'Method for operating a liquid ring compressor'2011 7,915,444'Method for producing diisocyanates'2011 7,897,806'Method for producing polyisocyanates'2011 7,851,648'Method for the continuous production of isocyanates'2010 7,754,900'Method for the production of dioxolane'2010 7,736,598'Reactor and method for producing chlorine from HCl'2010 7,705,106'Initial compounds for producing polyurethanes'2010 7,700,809'Process for preparing polyoxymethylene dimethyl ethers from methanol and formaldehyde'2010 7,671,240'Method for producing polyoxymethylene dimethyl ethers from methanol and formaldehyde'2010 7,659,430'Method for separating hydrogen chloride and phosgene'2010 7,592,479'Reprocessing of reaction material discharged from phosgenation reactors'2009 7,584,629'Separation of a substance mixture consisting of hydrogen chloride and phosgene'2009 7,524,405'Method for separating out solvent from a reaction mixture resulting from an isocyanate synthesis and for purifying this solvent'2009 7,414,159'Separation of liquid mixtures in a film evaporator'2008 7,408,083'Method for the production of diaminodiarylmethanes'2008 7,358,388'Method for the purification of isocyanates'2008 7,345,207'Production of high-concentration formaldehyde solutions'2008 7,342,134'Method for the distillative recovery of toluylenediamine'2008 7,235,697'Use of H2S-containing offgas streams for preparing sulfur-containing products'2007 7,179,935'Method for producing isocyanates'2007 7,112,694'Method for producing isocyanates'2006 7,084,297'Production of isocyanates in the gaseous phase'2006 6,833,469'Method for producing isocynates'2004 4,788,293'Preparation of 1-pyrazolines'1988 4,702,803'Preparation of pyrazoles'1987

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1987–2015Patents assigned to BASF AG (35)· patent assignee history

1987–2019Based in Mannheim, DE· patent location history

2008–2015Patents assigned to BASF SE (32)· patent assignee history

2012–2015Patents assigned to STROEFER ECKHARD (38)· patent assignee history

2012–2015Patents assigned to BOCK MICHAEL (8)· patent assignee history

2012–2015Patents assigned to MATTKE TORSTEN (8)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
STROEFER ECKHARDself	38	2012–2015
BASF AG	35	1987–2015
BASF SE	32	2008–2015
BOCK MICHAEL	8	2012–2015
MATTKE TORSTEN	8	2012–2015

Locations

Location	Patents	Span
Mannheim, DE	69	1987–2019