US3840549A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of 2-hydrocarbyldithio-5-mercapto-1,3,4-thiadiazoles by thiohydrocarbyl exchange
Assignee: BP Corp North America Inc
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Filing: 1972-08-22
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Granted: 1974-10-08
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Expires: 1992-08-22
Abstract
Abstract 1. A METHOD OF PREPARING 2-(HYDROCARBYLDITHIO)-5-ME CAPTO-1,3,4-THIADIAZOLE WHICH COMPRISES MIXING 2,5-DIME CAPTO-1,3,4-THIAZOLE AND 2,5-BIS(HYDROCARBYLDITHIO)1,3,4-THIADIAZOLE WHEREIN SAID HYDROCARBONYL GROUP OF THE REACTANT AND PRODUCT ARE ALKYL AND HAVE 1 TO 280 CARBON ATOMS.
Inventors
- 👤 E Blaha
- 👤 A Kurasiewicz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:31
CPC Classifications
C; C07; C07D; C07D285/00; C07D285/01; C07D285/02; C07D285/04; C07D285/12; C07D285/125; C10; C10M; C10M1/00; C10M1/08; C10M2219/00; C10M2219/04; C10M2219/046; C10M2219/10; C10M2219/102; C10M2219/104; C10M2219/106; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10N; C10N2010/00; C10N2010/04; C10N2040/00; C10N2040/20; C10N2040/22; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
31 words
A METHOD OF PREPARING 2-(HYDROCARBYLDITHIO)-5-ME CAPTO-1,3,4-THIADIAZOLE WHICH COMPRISES MIXING 2,5-DIME CAPTO-1,3,4-THIAZOLE AND 2,5-BIS(HYDROCARBYLDITHIO)1,3,4-THIADIAZOLE WHEREIN SAID HYDROCARBONYL GROUP OF THE REACTANT AND PRODUCT ARE ALKYL AND HAVE 1 TO 280 CARBON ATOMS.
Claim 2
Independent Claim
31 words
A METHOD OF PREPARING 2-(HYDROCARBYLDITHIO)-5-ME CAPTO-1,3,4-THIADIAZOLE WHICH COMPRISES MIXING 2,5-DIME CAPTO-1,3,4-THIAZOLE AND 2,5-BIS(HYDROCARBYLDITHIO)1,3,4-THIADIAZOLE WHEREIN SAID HYDROCARBONYL GROUP OF THE REACTANT AND PRODUCT ARE ALKYL AND HAVE 1 TO 280 CARBON ATOMS.
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) | 1977-10-07 | 1978-04-08 | 1978-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-07 | 1982-04-08 | 1982-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-07 | 1986-04-08 | 1986-10-08 | $7700.00 | Window Closed / Lapsed |