DE555078C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Production of chemically pure phosphoric acid from raw phosphoric acid obtained through acidic digestion
Assignee: OTTO WILLE DR
•
Filing: 1931-11-25
•
Granted: 1932-07-18
•
Expires: 1951-11-25
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-08 16:17
CPC Classifications
C; C01; C01B; C01B25/00; C01B25/16; C01B25/18; C01B25/234; C01B25/2343; C01B25/237
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.