DE556476C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Process for the preparation of azo dyes
Assignee: IG Farbenindustrie AG
•
Filing: 1930-08-17
•
Granted: 1932-08-10
•
Expires: 1950-08-17
Abstract
No abstract record available.
Inventors
- 👤 Dr Leopold Laska
- 👤 Dr Arthur Zitscher
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-10-29 10:02
CPC Classifications
C; C09; C09B; C09B29/00; C09B29/10; C09B29/18; D; D06; D06P; D06P1/00; D06P1/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.