US2809971A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heavy-metal derivatives of 1-hydroxy-2-pyridinethiones and method of preparing same
Assignee: Olin Corp
•
Filing: 1955-11-22
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Granted: 1957-10-15
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Expires: 1975-11-22
Abstract
No abstract record available.
Inventors
- 👤 Bernstein Jack
- 👤 Kathryn A Losee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:12
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/89
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
8 words
HEAVY-METAL SALTS OF 1-HYDROXY-2-PYRIDINETHIONES OF THE GENERAL FORMULA
Claim 2
Dependent Claim
8 words
HEAVY-METAL SALTS OF 1-HYDROXY-2-PYRIDINETHIONES 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) | 1960-10-14 | 1961-04-15 | 1961-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-14 | 1965-04-15 | 1965-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-14 | 1969-04-15 | 1969-10-15 | $7700.00 | Window Closed / Lapsed |