Patent FR2559979A1 successfully refreshed from Google Patents.
Patent AT226679B successfully refreshed from Google Patents.
AT226679B
Expired / Lapsed
AT
⏱️ 0.0 years remaining
Process for the production of new o-phenylenediamines
Assignee: Siegfried Ag
•
Filing: 1961-02-24
•
Granted: 1963-04-10
•
Expires: 1981-02-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
AT
Data Source
google_patents
Last Synchronized
2026-11-01 14:12
CPC Classifications
—
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.