Patent US2412679A successfully refreshed from Google Patents.
US2412679A
Expired / Lapsed
US
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Preparation of organic sulfonates and sulfonyl chlorides
Assignee: Standard Oil Co
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Filing: 1945-11-15
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Granted: 1946-12-17
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Expires: 1965-11-15
Abstract
No abstract record available.
Inventors
- 👤 Henry M Grubb
- 👤 Elton B Tucker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:53
CPC Classifications
C; C07; C07C; C07C303/00; C07C303/02; C07C303/04; C07C303/10
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) | 1949-12-16 | 1950-06-17 | 1950-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-12-16 | 1954-06-17 | 1954-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-12-16 | 1958-06-17 | 1958-12-17 | $7700.00 | Window Closed / Lapsed |