US2139602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of reclaiming catalytic material from spent catalytic material
Assignee: Individual
•
Filing: 1935-06-17
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Granted: 1938-12-06
•
Expires: 1955-06-17
Abstract
No abstract record available.
Inventors
- 👤 Raney Murray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:41
CPC Classifications
C; C22; C22B; C22B23/00; C22B23/04; C22B23/0407; C22B23/0415; C22B15/00; C22B15/0026; C22B15/0056; C22B15/0058; C22B15/0063; C22B15/0065; C22B15/0067; C22B23/02; C22B23/026; C22B34/00; C22B34/10; C22B34/12; C22B34/1263; C22B34/1277; C22B34/30; C22B34/32; C22B34/325; C22B7/00; C22B7/009; Y; Y02; Y02P; Y02P10/00; Y02P10/20
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) | 1941-12-05 | 1942-06-06 | 1942-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-12-05 | 1946-06-06 | 1946-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-12-05 | 1950-06-06 | 1950-12-06 | $7700.00 | Window Closed / Lapsed |