Inventor
Willy Schiwy
Inventor
Monheim, DE
Overview
Patents· 4 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C09Bprimary
C09BOrganic dyes or closely-related compounds for producing dyes, e.g. pigments67%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry17%
C09KMaterials for miscellaneous applications, not provided for elsewhere17%
PatentTitleYear
4,329,145'Process for producing liquid dyestuff preparations'19824,318,848'Process for the neutralization of basic reaction compositions'19824,285,692'Granular preparation of vat dyestuffs and/or disperse dyestuffs'19814,118,384'Process for preparation of azo dyestuffs by coupling in presence of aromatic sulphonic acid-formaldehyde reaction product'1978Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1978–1982Patents assigned to BAYER AG (4)· patent assignee history
1978–1982Based in Leverkusen, DE· patent location history
1981–1982Based in Monheim, DE· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| BAYER AG | 4 | 1978–1982 |
Locations
| Location | Patents | Span |
|---|---|---|
| Monheim, DE | 2 | 1981–1982 |
| Leverkusen, DE | 2 | 1978–1982 |