Patent US2501772A successfully refreshed from Google Patents.
Patent US2742476A successfully refreshed from Google Patents.
US2742476A
Expired / Lapsed
US
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Derivatives of 2-mercaptopyridine 1-oxide
Assignee: Olin Corp
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Filing: 1953-10-26
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Granted: 1956-04-17
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Expires: 1973-10-26
Abstract
No abstract record available.
Inventors
- 👤 Bernstein Jack
- 👤 Kathryn A Losee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:23
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/89; A; A01; A01N; A01N43/00; A01N43/34; A01N43/40; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C11; C11D; C11D1/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
COMPOUNDS OF THE GENERAL FORMULA:
Claim 2
Dependent Claim
5 words
COMPOUNDS OF THE GENERAL FORMULA:
References Cited (Backward Citations)
US2429096A
Cited
US2686786A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-17 | 1959-10-17 | 1960-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-17 | 1963-10-17 | 1964-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-17 | 1967-10-17 | 1968-04-17 | $7700.00 | Window Closed / Lapsed |