FR779583A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Process for improving the qualities of substantive dyes
Assignee: IG Farbenindustrie AG
•
Filing: 1934-10-11
•
Granted: 1935-04-09
•
Expires: 1954-10-11
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-27 05:50
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/44; D06P1/655; D06P1/66
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.