US1924872A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing zinc oxide
Assignee: Individual
•
Filing: 1932-03-28
•
Granted: 1933-08-29
•
Expires: 1952-03-28
Abstract
No abstract record available.
Inventors
- 👤 Archibald O Mason
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:26
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/04; C22; C22B; C22B19/00; C22B19/34; C01; C01P; C01P2004/00; C01P2004/60; C01P2006/00; C01P2006/80
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1936-08-28 | 1937-02-27 | 1937-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-08-28 | 1941-02-27 | 1941-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-08-28 | 1945-02-27 | 1945-08-29 | $7700.00 | Window Closed / Lapsed |