US2776934A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrogenation of sulfur-contaminated olefins
Assignee: Houdry Process Corp
•
Filing: 1951-11-27
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Granted: 1957-01-08
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Expires: 1971-11-27
Abstract
No abstract record available.
Inventors
- 👤 Sol W Weller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:57
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/02; C07C5/03; B; B01; B01J; B01J23/00; B01J23/38; B01J23/40; B01J23/42; B01J37/00; B01J37/02; B01J37/03; C07C2521/00; C07C2521/02; C07C2521/04; C07C2521/10; C07C2523/00; C07C2523/38; C07C2523/40; C07C2523/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1845439A
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US2331915A
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US2497176A
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US2440673A
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US2461959A
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US2542970A
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US2602772A
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US2630404A
Cited
US2642381A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-08 | 1960-07-09 | 1961-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-08 | 1964-07-09 | 1965-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-08 | 1968-07-09 | 1969-01-08 | $7700.00 | Window Closed / Lapsed |