US3427330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acylthioalkylthioenol ethers and method of preparation
Assignee: Ortho Pharmaceutical Corp
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Filing: 1964-01-31
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Granted: 1969-02-11
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Expires: 1984-01-31
Abstract
No abstract record available.
Inventors
- 👤 George Karmas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:52
CPC Classifications
C; C07; C07J; C07J31/00; C07J75/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
58 words
A METHOD OF PREPARING ACYLTHIOALKYLTHIOENOL ETHERS WHICH COMPRISES TREATING A CYCLIC THIOKETAL WITH A MIXTURE SELECTED FROM THE GROUP CONSISTING OF A HYDROCARBON CARBOXYLIC ANHYDRIDE AND AN ACID CATALYST, AN ACID HALIDE, WHEREIN THE HALIDE IS SELECTED FROM THE GROUP CONSISTING OF BROMINE, CHLORINE AND IODINE, AND AN ACID CATALYST, AND A HYDROCARBON CARBOXYLIC ACID AND TRIFLUOROACETIC ANHY-DRIDE.
Claim 2
Independent Claim
58 words
A METHOD OF PREPARING ACYLTHIOALKYLTHIOENOL ETHERS WHICH COMPRISES TREATING A CYCLIC THIOKETAL WITH A MIXTURE SELECTED FROM THE GROUP CONSISTING OF A HYDROCARBON CARBOXYLIC ANHYDRIDE AND AN ACID CATALYST, AN ACID HALIDE, WHEREIN THE HALIDE IS SELECTED FROM THE GROUP CONSISTING OF BROMINE, CHLORINE AND IODINE, AND AN ACID CATALYST, AND A HYDROCARBON CARBOXYLIC ACID AND TRIFLUOROACETIC ANHY-DRIDE.
Claim 3
Dependent Claim
8 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF:
Claim 4
Dependent Claim
8 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF:
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) | 1972-02-11 | 1972-08-12 | 1973-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-11 | 1976-08-12 | 1977-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-11 | 1980-08-12 | 1981-02-11 | $7700.00 | Window Closed / Lapsed |