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Patent US2401846A successfully refreshed from Google Patents.
US2401846A
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Procedure for olefin dehydrogenation
Assignee: Standard Oil Development Co
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Filing: 1943-12-22
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Granted: 1946-06-11
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Expires: 1963-12-22
Abstract
No abstract record available.
Inventors
- 👤 Simpson D Sumerford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:40
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/32; C07C5/327; C07C5/333; C07C5/3332; C07C5/321; C07C5/322; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/90; Y10S585/906
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) | 1949-06-10 | 1949-12-10 | 1950-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-06-10 | 1953-12-10 | 1954-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-06-10 | 1957-12-10 | 1958-06-11 | $7700.00 | Window Closed / Lapsed |