US2426646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing mercaptans from olefins and hydrogen sulfide
Assignee: Phillips Petroleum Co
•
Filing: 1943-07-03
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Granted: 1947-09-02
•
Expires: 1963-07-03
Abstract
No abstract record available.
Inventors
- 👤 Walter A Schulze
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:02
CPC Classifications
C; C07; C07B; C07B45/00; C07C; C07C319/00; C07C319/02; C07C319/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1836170A
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US1836183A
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US1836171A
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US2101096A
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US2116182A
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US2052268A
Cited
US2211990A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-09-01 | 1951-03-03 | 1951-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-09-01 | 1955-03-03 | 1955-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-09-01 | 1959-03-03 | 1959-09-02 | $7700.00 | Window Closed / Lapsed |