Inventor
Willi Streicher
Inventor
Cologne, DE
Overview
Patents· 7 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C07Cprimary
C07CAcyclic or carbocyclic compounds75%
C07BGeneral methods of organic chemistry13%
C07DHeterocyclic compounds13%
PatentTitleYear
6,552,230'Method for preparing 2-nitro-5-(phenylthio)-anilines'20035,763,641'Process for the preparation of aromatic methoxycarboxylic acid methyl esters'19985,179,211'Process for the preparation of indoles'19934,910,345'Process for the purification of nitrobenzaldenhyde'19904,873,026'Process for the preparation of 1-aminonaphthalene-2,4,7-trisulphonic acid and 1-aminonaphthalene-7-sulphonic acid'19894,836,959'Process for the preparation of 1-aminonaphthalene-2,4,7-trisulphonic acid and 1-aminonaphthalene-7-sulphonic acid'19894,568,781'Preparation of fluorine-substituted aromatic compounds'1986Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1986Patents assigned to BASF AG (1)· patent assignee history
1986Based in Aalen, DE· patent location history
1989–2003Patents assigned to BAYER AG (6)· patent assignee history
1989–1993Based in Cologne, DE· patent location history
1989Based in Koeln, DE· patent location history
1998–2003Based in Krefeld, DE· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| BAYER AG | 6 | 1989–2003 |
| BASF AG | 1 | 1986 |
Locations
| Location | Patents | Span |
|---|---|---|
| Cologne, DE | 3 | 1989–1993 |
| Krefeld, DE | 2 | 1998–2003 |
| Koeln, DE | 1 | 1989 |
| Aalen, DE | 1 | 1986 |