US3347863A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for basic aluminum salt of pyridinethione
Assignee: Olin Corp
•
Filing: 1964-06-29
•
Granted: 1967-10-17
•
Expires: 1984-06-29
Abstract
No abstract record available.
Inventors
- 👤 Gerhard F Ottmann
- 👤 Irene M Voynick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:37
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/89
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
A PROCESS FOR PREPARING THE BASIC ALUMINUM SALT OF 1-HYDROXY-2-PYRIDINETHIONE WHICH COMPRISES ADDING 1-HYDROXY-2-PYRIDINETHIONE TO AN AQUEOUS SLURRY OF FRESHLY PREPARED ALUMINUM HYDROXIDE, WHEREIN THE MOLAR RATIO OF SAID 1-HYDROXY-2-PYRIDINETHIONE TO SAID ALUMINUM HYDROXIDE IS IN THE RANGE BETWEEN ABOUT 1.1:1 AND ABOUT 2.9:1, AND RECOVERING THE BASIC ALUMINUM SALT PRODUCED THEREBY.
Claim 2
Dependent Claim
52 words
A PROCESS FOR PREPARING THE BASIC ALUMINUM SALT OF 1-HYDROXY-2-PYRIDINETHIONE WHICH COMPRISES ADDING 1-HYDROXY-2-PYRIDINETHIONE TO AN AQUEOUS SLURRY OF FRESHLY PREPARED ALUMINUM HYDROXIDE, WHEREIN THE MOLAR RATIO OF SAID 1-HYDROXY-2-PYRIDINETHIONE TO SAID ALUMINUM HYDROXIDE IS IN THE RANGE BETWEEN ABOUT 1.1:1 AND ABOUT 2.9:1, AND RECOVERING THE BASIC ALUMINUM SALT PRODUCED THEREBY.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-16 | 1971-04-17 | 1971-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-16 | 1975-04-17 | 1975-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-16 | 1979-04-17 | 1979-10-17 | $7700.00 | Window Closed / Lapsed |