US1386555A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a catalyst
Assignee: Government of the United States of America
•
Filing: 1920-01-03
•
Granted: 1921-08-02
•
Expires: 1940-01-03
Abstract
No abstract record available.
Inventors
- 👤 Arthur L Davis
- 👤 Kenneth D Jacob
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:36
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/88; B01J23/881
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) | 1924-08-01 | 1925-01-31 | 1925-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1928-08-01 | 1929-01-31 | 1929-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1932-08-01 | 1933-01-31 | 1933-08-02 | $7700.00 | Window Closed / Lapsed |