US3087932A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing 2, 5-bis(hydrocarbondithio)-1, 3, 4-thiadiazole
Assignee: Standard Oil Co
•
Filing: 1959-07-09
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Granted: 1963-04-30
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Expires: 1979-07-09
Abstract
No abstract record available.
Inventors
- 👤 Jr Randel Q Little
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:32
CPC Classifications
C; C07; C07D; C07D285/00; C07D285/01; C07D285/02; C07D285/04; C07D285/12; C07D285/125
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
35 words
THE PROCESS OF PREPARING 2,5-BIS(R-DITHIO)-1,3,4THIADIAZOLE WHICH COMPRISES REACTING A COMPOUND SELECTED FROM THE GROUP CONSISTING OF 2,5-DIMERCAPTO-1,3,4,-THIADIAZOLE AND THE AKALI METAL SALTS OF 2,5-DIMERCAPTO-1,3,4THIADIAZOLE WITH R-MERCAPTAN AND HYDROGEN PEROXIDE, WHEREIN R IS A HYDROCARBON RADICAL.
Claim 2
Dependent Claim
35 words
THE PROCESS OF PREPARING 2,5-BIS(R-DITHIO)-1,3,4THIADIAZOLE WHICH COMPRISES REACTING A COMPOUND SELECTED FROM THE GROUP CONSISTING OF 2,5-DIMERCAPTO-1,3,4,-THIADIAZOLE AND THE AKALI METAL SALTS OF 2,5-DIMERCAPTO-1,3,4THIADIAZOLE WITH R-MERCAPTAN AND HYDROGEN PEROXIDE, WHEREIN R IS A HYDROCARBON RADICAL.
References Cited (Backward Citations)
US2713053A
Cited
US2719126A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-29 | 1966-10-29 | 1967-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-29 | 1970-10-29 | 1971-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-29 | 1974-10-29 | 1975-04-30 | $7700.00 | Window Closed / Lapsed |