US2441297A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for dehydrogenation of hydrocarbons by contact with catalysts supported on alumina stabilized by aluminum phosphate
Assignee: Union Oil Company of California
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Filing: 1944-05-03
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Granted: 1948-05-11
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Expires: 1964-05-03
Abstract
No abstract record available.
Inventors
- 👤 Robert I Stirton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:15
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/32; C07C5/373; C07C5/393; C07C5/41; C07C5/412; B; B01; B01J; B01J27/00; B01J27/14; B01J27/186; B01J27/188; C07C5/321; C07C5/322; C07C5/327; C07C5/333; C07C5/3332
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-05-11 | 1951-11-10 | 1952-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-05-11 | 1955-11-10 | 1956-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-05-11 | 1959-11-10 | 1960-05-11 | $7700.00 | Window Closed / Lapsed |