Inventor
Fritz Graf
Inventor
Speyer, DE
Overview
Patents· 9 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C07Cprimary
C07CAcyclic or carbocyclic compounds55%
C07DHeterocyclic compounds27%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry9%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests9%
PatentTitleYear
5,714,644'Process and catalyst for the selective hydrogenation of butynediol to butenediol'19984,902,828'Recovery of aqueous glyoxylic acid solutions'19904,851,584'Preparation of carbonyl compounds'19894,814,513'Preparation of carbonyl compounds'19894,728,435'Decolorization of aqueous glyoxal solutions'19884,698,434'Preparation of hydroxymethylimidazoles'19874,521,632'Purification of aqueous glyoxal solutions'19854,450,277'Preparation of 1-substituted imidazoles'19844,377,696'Preparation of 4-methylimidazoles'1983Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1983–1998Patents assigned to BASF AG (9)· patent assignee history
1983–1998Based in Speyer, DE· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| BASF AG | 9 | 1983–1998 |
Locations
| Location | Patents | Span |
|---|---|---|
| Speyer, DE | 9 | 1983–1998 |