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US2495467A
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Thioethers of polyalkylated cyclic sulfones
Assignee: Shell Development Co
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Filing: 1946-01-07
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Granted: 1950-01-24
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Expires: 1966-01-07
Abstract
No abstract record available.
Inventors
- 👤 Rupert C Morris
- 👤 John L Van Winkle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:34
CPC Classifications
C; C07; C07D; C07D333/00; C07D333/02; C07D333/46; C07D333/48; Y; Y10; Y10S; Y10S524/00; Y10S524/925
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
6 words
A COMPOUND HAVING THE STRUCTURAL FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-23 | 1953-07-25 | 1954-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-23 | 1957-07-25 | 1958-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-23 | 1961-07-25 | 1962-01-24 | $7700.00 | Window Closed / Lapsed |