Patent US4786188A successfully refreshed from Google Patents.
Patent FR884569A successfully refreshed from Google Patents.
FR884569A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Process for preparing basic compounds
Assignee: IG Farbenindustrie AG
•
Filing: 1942-07-30
•
Granted: 1943-08-20
•
Expires: 1962-07-30
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-28 22:00
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/02; C07D295/027; C07D295/03; C07C; C07C209/00; C07C209/68
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.