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US2686786A
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Nu-hydroxy-2-pyridinethiones and method of preparing same
Assignee: Mathieson Chemical Corp
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Filing: 1953-01-09
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Granted: 1954-08-17
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Expires: 1973-01-09
Abstract
No abstract record available.
Inventors
- 👤 Elliott N Shaw
- 👤 Bernstein Jack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:48
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/89; C07D213/04; C07D213/60; C07D213/62; C07D213/70
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
COMPOUNDS OF THE GROUP CONSISTING OF: COMPOUNDS OF THE GENERAL FORMULA
Claim 2
Dependent Claim
11 words
COMPOUNDS OF THE GROUP CONSISTING OF: COMPOUNDS OF THE GENERAL FORMULA
References Cited (Backward Citations)
US1753658A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-16 | 1958-02-15 | 1958-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-16 | 1962-02-15 | 1962-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-16 | 1966-02-15 | 1966-08-17 | $7700.00 | Window Closed / Lapsed |