US2285277A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Noble metal catalyst and process of preparing same
Assignee: EIDP Inc
•
Filing: 1939-11-08
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Granted: 1942-06-02
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Expires: 1959-11-08
Abstract
No abstract record available.
Inventors
- 👤 Clyde O Henke
- 👤 Roland G Benner
- 👤 Robert C W Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:05
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/40; B01J23/46; B01J23/464; B01J23/42; B01J23/44; B01J21/00; B01J21/18; Y; Y10; Y10S; Y10S502/00; Y10S502/506
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) | 1945-06-01 | 1945-12-01 | 1946-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-06-01 | 1949-12-01 | 1950-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-06-01 | 1953-12-01 | 1954-06-02 | $7700.00 | Window Closed / Lapsed |