US3888869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bis (thiocyanomethylthio) thiadiazoles
Assignee: Dow Chemical Co
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Filing: 1973-08-13
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Granted: 1975-06-10
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Expires: 1993-08-13
Abstract
Abstract 2,5-Bis(thiocyanomethylthio)-1,3,4-thiadiazole and its isomer, 3,5-bis(thiocyanomethylthio)-1,2,4-thiadiazole, are prepared by mixing at room temperature substantially one mole of the disodium or dipotassium salt of either 2,5-dimercapto-1,3,4-thiadiazole or its isomer, 3,5-dimercapto-1,2,4-thiadiazole, in methanol with substantially 2 molar proportions of chloromethylthiocyanate. The compounds have antimicrobial activity.
Inventors
- 👤 R Garth Pews
- 👤 Christian T Goralski
- 👤 George A Burk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:16
CPC Classifications
C; C07; C07D; C07D285/00; C07D285/01; C07D285/02; C07D285/04; C07D285/12; C07D285/125; A; A01; A01N; A01N43/00; A01N43/72; A01N43/82
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
10 words
A MEMBER OF THE GROUP CONSISTING OF (2,5-BISBI(THIOCYANOMETHYLTHIO)-1,3,4-THIADIAZOLE) AND (3,5BIS(THIOCYANOMETHYLTHIO)-1,24-THIADIAZOLE).
Claim 2
Dependent Claim
10 words
A MEMBER OF THE GROUP CONSISTING OF (2,5-BISBI(THIOCYANOMETHYLTHIO)-1,3,4-THIADIAZOLE) AND (3,5BIS(THIOCYANOMETHYLTHIO)-1,24-THIADIAZOLE).
Claim 3
Dependent Claim
8 words
The compounds of claim 1 which is (2,5-bis(thiocyanomethylthio)-1,3,4-thiadiazole).
Claim 4
Dependent Claim
8 words
The compound of claim 1 which is (3,5-bis(thiocyanomethylthio)-1,2,4-thiadiazole).
References Cited (Backward Citations)
US3753999A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-09 | 1978-12-09 | 1979-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-09 | 1982-12-09 | 1983-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-09 | 1986-12-09 | 1987-06-10 | $7700.00 | Window Closed / Lapsed |