FR870599A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Process for preparing transparent artificial materials based on compounds forming polyamides, polyureas or polyurethanes
Assignee: IG Farbenindustrie AG
•
Filing: 1941-03-06
•
Granted: 1942-03-16
•
Expires: 1961-03-06
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-25 21:01
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/02; C08G69/36
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.