Patent US4273878A successfully refreshed from Google Patents.
Patent US3998790A successfully refreshed from Google Patents.
Patent CH472486A successfully refreshed from Google Patents.
CH472486A
Expired / Lapsed
CH
⏱️ 0.0 years remaining
Process for the production of azo dyes
Assignee: Hoechst Ag
•
Filing: 1963-10-01
•
Granted: —
•
Expires: 1983-10-01
Abstract
No abstract record available.
Inventors
- 👤 Kuehne Rudolf
- 👤 Meininger Fritz
- 👤 Pfirrmann Rolf
Bibliographic Details
Application Number
—
Jurisdiction
CH
Data Source
google_patents
Last Synchronized
2026-11-04 21:37
CPC Classifications
C; C09; C09B; C09B44/00; C09B44/02; Y; Y10; Y10S; Y10S8/00; Y10S8/916; Y10S8/918; Y10S8/92; Y10S8/922; Y10S8/924; Y10S8/927
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.