US2275181A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for hydrogenating hydrocarbons
Assignee: Universal Oil Products Co
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Filing: 1939-04-03
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Granted: 1942-03-03
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Expires: 1959-04-03
Abstract
No abstract record available.
Inventors
- 👤 Vladimir N Ipatieff
- 👤 Ben B Corson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:21
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/02; C07C5/10; B; B01; B01J; B01J23/00; B01J23/70; B01J23/72; C07C5/03; C07C2523/00; C07C2523/70; C07C2523/72; C07C2523/74; C07C2523/745
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) | 1945-03-02 | 1945-09-01 | 1946-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-03-02 | 1949-09-01 | 1950-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-03-02 | 1953-09-01 | 1954-03-03 | $7700.00 | Window Closed / Lapsed |