US3159682A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing belta-hydroxyalkyl sulphonium salts
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1962-04-20
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Granted: 1964-12-01
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Expires: 1982-04-20
Abstract
No abstract record available.
Inventors
- 👤 Baird William
- 👤 Batty John Woolley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:06
CPC Classifications
C; C07; C07C; C07C381/00; C07C381/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
17 words
A PROCESS FOR THE MANUFACTURE OF B-HYDROXYALKYL SULPHONIUM SALTS WHICH COMPRISES REACTING A SULFIDE OF THE FORMULA:
Claim 2
Dependent Claim
17 words
A PROCESS FOR THE MANUFACTURE OF B-HYDROXYALKYL SULPHONIUM SALTS WHICH COMPRISES REACTING A SULFIDE OF THE FORMULA:
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) | 1967-12-01 | 1968-06-01 | 1968-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-01 | 1972-06-01 | 1972-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-01 | 1976-06-01 | 1976-12-01 | $7700.00 | Window Closed / Lapsed |