US2461331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for dehydrogenation of hydrocarbons in the presence of a gaseous diluent
Assignee: Standard Oil Development Co
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Filing: 1946-06-10
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Granted: 1949-02-08
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Expires: 1966-06-10
Abstract
No abstract record available.
Inventors
- 👤 Charles J G Leesemann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:50
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/32; C07C5/321; B; B01; B01J; B01J8/00; B01J8/02; B01J8/0242; B01J8/025; B01J8/0278; 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) | 1952-02-08 | 1952-08-09 | 1953-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-02-08 | 1956-08-09 | 1957-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-02-08 | 1960-08-09 | 1961-02-08 | $7700.00 | Window Closed / Lapsed |