US2492349A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carrying out catalytic reactions
Assignee: Texaco Inc
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Filing: 1946-11-26
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Granted: 1949-12-27
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Expires: 1966-11-26
Abstract
No abstract record available.
Inventors
- 👤 Roland A Beck
- 👤 Eugene E Sensel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:27
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/18; B01J8/1836; B01J8/24; B01J8/34
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) | 1952-12-26 | 1953-06-27 | 1953-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-26 | 1957-06-27 | 1957-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-26 | 1961-06-27 | 1961-12-27 | $7700.00 | Window Closed / Lapsed |