FR529570A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Process for preparing potash and alumina compounds or alumina compounds
Assignee: Norsk Hydro Elektrisk Kvaelstof AS
•
Filing: 1921-01-10
•
Granted: 1921-12-01
•
Expires: 1941-01-10
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-03 11:17
CPC Classifications
C; C01; C01F; C01F7/00; C01F7/66
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.