Inventor
Walter Leitner
Inventor
Aachen, DE
Overview
Patents· 48 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C08Gprimary
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds25%
C07CAcyclic or carbocyclic compounds17%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry14%
C07BGeneral methods of organic chemistry7%
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 goods7%
C07DHeterocyclic compounds6%
C08JWorking-up5%
C08LCompositions of macromolecular compounds5%
C09DCoating compositions, e.g. paints, varnishes or lacquers3%
PatentTitleYear
11,111,257Molecular catalysts for selective hydrogenolysis of amides202111,098,153Method for producing a multiple bond-containing prepolymer as elastomer precursor202111,098,154Flame-retardant phosphorus-functional polyether carbonate polyol and method for production thereof202111,091,589Method for producing a polymer which contains double bonds as an elastomer precursor202110,858,310Method for producing isocyanates202010,682,636Immobilized ruthenium-triphos catalysts for selective hydrogenolysis of amides202010,526,484Dithiocarbonate containing polyols as polymer polyol stabilizers202010,434,504Method for reduction of organic molecules201910,385,167Process for the synthesis of polyoxazolidinone compounds with high stability201910,364,323Method for producing polyether carbonate polyols201910,239,995Process for preparing polyether carbonate polyols201910,179,835Radical crosslinking of polyether carbonate polyols that have electron-poor and electron-rich double bonds201910,167,364Process for preparing polycarbonates by transesterifying dithiocarbonates or selenium analogues thereof with bisphenols201910,166,534Method for reduction of organic molecules20199,957,354Higher functional polyether carbonate polyols obtained using branching molecules20189,957,353Low viscosity polyether carbonate polyols having side chains20189,790,328'Polyethercarbonate-polyoxymethylene block copolymers'20179,708,446'Cross-linking of polyether carbonate polyols containing double-bonds, by adding mercapto-compounds'20179,688,814'Functionalized polyoxymethylene block copolymers'20179,657,135'Method for producing polyether ester carbonate polyols'20179,650,310'Method for the methylation of nitrogen-containing organic compounds'20179,580,375'Method for producing formic acid by CO2 hydrogenation'20179,534,090'NCO-modified polyoxymethylene block copolymers'20179,469,715'Method for producing formaldehyde/CO2 copolymers'20169,458,281'Method for the production of oxazolidinone compounds'20169,403,754'Process for hydrogenating aromatic di- and polyamines'20169,309,356'Method for activating double metal cyanide catalysts for the production of polyether carbonate polyols'20169,278,906'Process for hydrogenating aromatic di- and polyamines to cycloaliphatic di- and polyamines'20169,279,029'Method for producing light-coloured polyisocyanates'20169,273,183'Polyether carbonate polyol production method'20169,260,562'Method for producing polycarbonate polyols by the immortal polymerization of cyclic carbonates'20169,249,259'Method for activating double metal cyanide catalysts for producing polyether polyols'20169,216,933'Reduction method for the reduction of carbon dioxide and carbon dioxide derivatives'20159,200,113'Multi-amine functional oligomers and method for producing the same by the reduction of corresponding oximes'20159,162,949'Method for the production of aliphatic alcohols and/or their ethers, in particular, 1-octanol'20159,120,894'Method for producing polyether polyols'20159,073,842'Method for producing formic acid by CO2 hydrogenation'20158,987,446'Bimetallic complexes and the use thereof in producing diaryl carbonate'20158,735,583'Chiral phosphorus compound'20148,404,843'Chiral phosphorus compound'20138,222,415'Chiral phosphorus compound'20127,482,501'Process for continuous ringclosing metathesis in compressed carbondioxide'20096,720,281'Chiral phosphorus ligands and the use thereof in the production of optically active products'20046,525,209'Method of producing epoxides'20036,399,834'Methods for producing chiral aldehydes'20026,388,141'Hydroformylation with unmodified rhodium catalysts in supercritical carbon dioxide'20026,348,551'Selective olefin metathesis of bifunctional or polyfunctional substrates in compressed carbon dioxide as reaction medium'20026,257,671'Device for protecting selective cutting machines against overload'2001Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2001Based in Zeltweg, AT· patent location history
2002–2004Based in Mulheim, DE· patent location history
2009–2021Based in Aachen, DE· patent location history
2012–2016Patents assigned to LEITNER WALTER (9)· patent assignee history
2015–2021Patents assigned to COVESTRO DEUTSCHLAND AG (20)· patent assignee history
2015–2016Patents assigned to BAYER IP GMBH (6)· patent assignee history
2015–2016Patents assigned to Gürtler Christoph (6)· patent assignee history
2015–2016Patents assigned to MÜLLER THOMAS ERNST (6)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| COVESTRO DEUTSCHLAND AG | 20 | 2015–2021 |
| LEITNER WALTERself | 9 | 2012–2016 |
| BAYER IP GMBH | 6 | 2015–2016 |
| Gürtler Christoph | 6 | 2015–2016 |
| MÜLLER THOMAS ERNST | 6 | 2015–2016 |
Locations
| Location | Patents | Span |
|---|---|---|
| Aachen, DE | 42 | 2009–2021 |
| Mulheim, DE | 5 | 2002–2004 |
| Zeltweg, AT | 1 | 2001 |