Inventor
Eberhard Zirngiebl
Inventor
Koln, DE
Overview
Patents· 28 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C07Cprimary
C07CAcyclic or carbocyclic compounds37%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry19%
C07DHeterocyclic compounds9%
C01DCompounds of alkali metals, i.e. lithium, sodium, potassium, rubidium, caesium, or francium7%
C25BElectrolytic or electrophoretic processes for the production of compounds or non-metals7%
B01DSeparation5%
C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds5%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds2%
C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients2%
C23FNon-mechanical removal of metallic material from surface2%
PatentTitleYear
7,468,158'Corrosion inhibitor for protecting metallic materials in strongly alkaline medium'20086,794,549'Continuous adiabatic process for nitrating chlorobenzene'20046,768,032'Continuous isothermal process for preparing mononitrotoluenes in the presence of phosphoric acid'20046,586,645'Continuous adiabatic process for preparing nitrochlorobenzene'20036,583,327'Continuous isothermal process for preparing mononitrotoluenes'20036,548,445'Supported catalysts containing a platinum metal and process for preparing diaryl carbonates'20036,509,510'Method for hydrogenating aromatic polymers in the presence of special catalysts'20036,420,491'Method for hydrogenating aromatic polymers in the presence of hydrocarbons which contain oxygen'20026,353,142'Process for the adiabatic preparation of 3,4-dichloronitrobenzene'20026,001,768'Supported catalysts containing a platinum metal and process for preparing diaryl carbonates'19995,912,358'Process for preparing 2-pyrrolidones'19995,886,232'Process for preparing substituted cyclohexanones'19995,760,247'Process for the preparation of carbazole'19985,728,896'Process for the preparation of hydroxymethyl-cyclopropane'19985,663,443'Ruthenium catalysts, their preparation and a process for preparing cycloaliphatic polyamines using these catalysts'19975,648,500'Process for the preparation of substituted 1,2,3,4-tetrahydrocarbazoles'19975,616,730'Process for preparing succinic anhydride'19975,593,936'Hydrated niobium oxide and hydrated tantalum oxide catalysts, their preparation and a process for preparing N-alkylated anilines using these catalysts'19975,476,959'Process for the preparation of dialkyl carbonates'19955,414,104'Process for preparing dialkyl carbonates'19955,410,085'Process for the preparation of chlorine-substituted aromatic amines and of catalysts'19955,354,923'Process for the preparation of aromatic carbonic diesters'19945,173,466'Catalyst for the reduction of nitrogen oxides from waste gases and a process for its production'19924,952,624'Polyarylene sulfide mixtures with reduced radical formation under highly accelerated weathering'19904,082,631'Absorption of chlorine gas'19784,078,978'Purification of electrolysis brine for diaphragm cells'19784,035,771'Process for the remote transmission and indication of electrical measured values in electrolysis cells'19773,970,528'Process for the purification of electrolysis brine'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976–2004Patents assigned to BAYER AG (26)· patent assignee history
1976–1999Based in Cologne, DE· patent location history
1995–1999Based in Koln, DE· patent location history
1997Based in K oln, DE· patent location history
2002–2004Based in Kln, DE· patent location history
2003Patents assigned to TEIJIN LTD (1)· patent assignee history
2004Patents assigned to BAYER CHEMICALS AG (1)· patent assignee history
2008Patents assigned to LANXESS DEUTSCHLAND GMBH (1)· patent assignee history
2008Based in Köln, DE· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| BAYER AG | 26 | 1976–2004 |
| BAYER CHEMICALS AG | 1 | 2004 |
| LANXESS DEUTSCHLAND GMBH | 1 | 2008 |
| TEIJIN LTD | 1 | 2003 |
Locations
| Location | Patents | Span |
|---|---|---|
| Koln, DE | 9 | 1995–1999 |
| Cologne, DE | 9 | 1976–1999 |
| Kln, DE | 8 | 2002–2004 |
| Köln, DE | 1 | 2008 |
| K oln, DE | 1 | 1997 |