US2490798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and process for catalytic reactions
Assignee: Standard Oil Development Co
•
Filing: 1942-12-30
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Granted: 1949-12-13
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Expires: 1962-12-30
Abstract
No abstract record available.
Inventors
- 👤 Edwin J Gohr
- 👤 Homer Z Martin
- 👤 Charles E Jahnig
- 👤 Charles W Tyson
- 👤 John M Graham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:19
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/18; B01J8/1845; B01J8/1863; B01J8/24; C; C10; C10G; C10G11/00; C10G11/14; C10G11/18; C10G35/00; C10G35/04; C10G35/10; C10G35/14; B01J2208/00; B01J2208/00008; B01J2208/00017; B01J2208/00106; B01J2208/00168; B01J2208/00256; B01J2208/00265; B01J2208/00274; B01J2208/00327; B01J2208/00336; B01J2208/00353; B01J2208/00504; B01J2208/0053; B01J2208/0061
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-12 | 1953-06-13 | 1953-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-12 | 1957-06-13 | 1957-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-12 | 1961-06-13 | 1961-12-13 | $7700.00 | Window Closed / Lapsed |