US3307970A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparations for the production of metal 8-hydroxy quinolinates and process for utilizing same
Assignee: Merck and Co Inc
•
Filing: 1961-11-30
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Granted: 1967-03-07
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Expires: 1981-11-30
Abstract
No abstract record available.
Inventors
- 👤 Grier Nathaniel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:07
CPC Classifications
C; C07; C07D; C07D215/00; C07D215/02; C07D215/16; C07D215/20; C07D215/24; C07D215/26; C07D215/30; C10; C10M; C10M133/00; C10M133/02; C10M133/38; C10M133/40; C10M177/00; D; D06; D06M; D06M13/00; D06M13/50; D06M16/00; C10M2215/00; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/30
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
89 words
THE METHOD FOR INCORPORATING A METAL 8-QUINOLINOLTE WITHIN A FIBROUS OR POROUS MATERIAL WHICH COMPRISES DISSOLVING AN ESTER OF 8-QUINOLINOL AND A SALT OF A NON-ALKALI METAL IN AN ORGANIC SOLVENT IN THE ABSENCE OF SUFFICIENT WATER TO CAUSE SUBSTANTIAL HYDROLYSIS OF THE ESTER BEFORE IT REACTS WITH THE METAL SALT, AND PASSING SAID FIBROUS OR POROUS MATERIAL THROUGH THE SOLUTION SO OBTAINED BEFORE A SUBSTANTIAL AMOUNT OF METAL QUINOLINOLATE IS FORMED AND HEATING THE SO TREATED MATERIAL TO ACCELERATE THE FORMATION OF SAID METAL QUINOLINOLATE WITHIN THE MATERIAL.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |