US2472471A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of thioethers
Assignee: Standard Oil Development Co
•
Filing: 1945-08-04
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Granted: 1949-06-07
•
Expires: 1965-08-04
Abstract
No abstract record available.
Inventors
- 👤 Lawrence T Eby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:52
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/16; C07; C07C; C07C319/00; C07C319/14; C10; C10M; C10M2219/00; C10M2219/02; C10M2219/08; C10M2219/082; C10M2219/083; C10M2219/086
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE202632C
Cited
US2065323A
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US2181642A
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US2368446A
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US2389153A
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US2366453A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-06 | 1952-12-06 | 1953-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-06 | 1956-12-06 | 1957-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-06 | 1960-12-06 | 1961-06-07 | $7700.00 | Window Closed / Lapsed |