Inventor
Rolf Putter
Inventor
Duesseldorf, DE
Overview
Patents· 15 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C07Cprimary
C07CAcyclic or carbocyclic compounds56%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds25%
C07DHeterocyclic compounds13%
C22BProduction and refining of metals6%
PatentTitleYear
4,377,535'Process for the preparation of nitro-T-acid (8-nitro-naphthalene-1,3,6-trisulphonic acid)'19834,375,562'Process for the preparation of bis-(amino-phenyl)-disulphides'19834,341,719'Process for the preparation of 1-amino-2-ethoxy-naphthalene-6-sulphonic acid'19824,180,521'Process for the preparation of naphthalene-1,3,6-trisulphonic acid'19794,178,308'Process for the preparation of 1-amino-8-naphthol-3,6-disulphonic acid (H-acid)'19794,166,826'Process for the preparation of 1-amino-8-naphthol-3,6-disulphonic acid (H-acid)'19794,137,238'Process for the preparation of 2-hydroxycarbazoles'19794,094,852'Process for the production of polytriazines in the presence of high-boiling esters'19784,094,861'Process for the production of non-inflammable polytriazines'19784,091,013'Process for preparing 1-amino-naphthalene-7-sulphonic acid'19784,049,630'Process for preparation of s-triazine prepolymers'19774,046,796'Process for the production of polyfunctional cyanic acid esters'19774,028,393'Process for the production of polyfunctional cyanic acid esters'19773,978,028'Process for preparing s-triazine prepolymers by condensation of an aromatic polyhydroxy compound with cyanuric chloride and thereafter reacting the condensation product with cyanogen halide in the presence of base'19763,931,255'Process for the production of 5-nitro-1,4-naphthoquinone'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976–1983Patents assigned to BAYER AG (15)· patent assignee history
1976–1983Based in Duesseldorf, DE· patent location history
1978Based in Dusseldorf, DE· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| BAYER AG | 15 | 1976–1983 |
Locations
| Location | Patents | Span |
|---|---|---|
| Duesseldorf, DE | 12 | 1976–1983 |
| Dusseldorf, DE | 3 | 1978 |