US2744908A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing substitutedmercapto-1, 3, 4-thiadiazoles
Assignee: Wyeth Holdings LLC
•
Filing: 1954-01-27
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Granted: 1956-05-08
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Expires: 1974-01-27
Abstract
No abstract record available.
Inventors
- 👤 Young Richard William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:39
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
9 words
A METHOD FOR PREPARING COMPOUNDS HAVING THE GENERAL FORMULA:
Claim 2
Independent Claim
9 words
A METHOD FOR PREPARING COMPOUNDS HAVING THE GENERAL 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) | 1959-05-08 | 1959-11-07 | 1960-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-08 | 1963-11-07 | 1964-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-08 | 1967-11-07 | 1968-05-08 | $7700.00 | Window Closed / Lapsed |