Inventor
Holger Geissler
Inventor
Mainz, DE
Overview
Patents· 16 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C07Dprimary
C07DHeterocyclic compounds33%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry23%
C07CAcyclic or carbocyclic compounds23%
C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium10%
C07BGeneral methods of organic chemistry7%
C01BNon-metallic elements3%
PatentTitleYear
6,653,502'Process for preparing phenylacetic acid derivatives'20036,566,521'Valeraldehyde and process for its preparation'20036,521,097'Process for separating hydrogen chloride from a mixture comprising an N-alkyl-2-pyrrolidone and hydrogen chloride'20036,500,956'Method for the catalytic production of substituted bipyridyl derivatives'20026,392,047'Process for preparing biaryls in the presence of palladophosphacyclobutane catalysts'20026,353,136'Process for preparing aromatic amines in the presence of palladaphosphacyclobutane catalysts'20026,348,603'Process for the preparation of isochroman-3-ones'20026,342,605'Valeraldehyde and process for its preparation'20026,215,006'Process for the preparation of 3-isochromanoes by cyclization of o-chloromethylphenylacetic acids'20016,194,627'Process for preparing aromatic olefins by using palladaphosphacyclobutanes as catalysts'20016,162,753'Process for recovering cobalt carbonyl catalysts used to produced N-acyl-alpha-amino acid derivatives by amidocarbonylation'20006,084,114'Dipalladaphosphacyclobutanes and a process for preparing the same'20006,075,152'Process for preparing isochroman-3-ones'20006,002,020'Process for the catalytic preparation of 3-isochromanones from phthalans'19995,831,128'Synthesis of aromatic amines from chloroamatics'19985,756,413'Process for recovering cobalt carbonyl catalysts used in the preparation of N-acyl-.alpha.-amino acid derivates by amidocarbonylation'1998Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1998Patents assigned to HOECHST AG (2)· patent assignee history
1998–2003Based in Mainz, DE· patent location history
1998Based in Kelkheim, DE· patent location history
1999–2003Patents assigned to CLARIANT GMBH (8)· patent assignee history
2000Patents assigned to AVENTIS RES & TECH GMBH & CO (2)· patent assignee history
2001Patents assigned to AVENTIS RES & TECHNOLOGY GMBH (1)· patent assignee history
2002–2003Patents assigned to CELANESE GMBH (2)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| CLARIANT GMBH | 8 | 1999–2003 |
| AVENTIS RES & TECH GMBH & CO | 2 | 2000 |
| CELANESE GMBH | 2 | 2002–2003 |
| HOECHST AG | 2 | 1998 |
| AVENTIS RES & TECHNOLOGY GMBH | 1 | 2001 |
Locations
| Location | Patents | Span |
|---|---|---|
| Mainz, DE | 15 | 1998–2003 |
| Kelkheim, DE | 1 | 1998 |