US3082193A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal-polyvinylpyrrolidone compound and process for preparing same
Assignee: Yardney International Corp
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Filing: 1958-03-06
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Granted: 1963-03-19
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Expires: 1978-03-06
Abstract
No abstract record available.
Inventors
- 👤 Mendelsohn Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:09
CPC Classifications
A; A01; A01N; A01N59/00; A01N59/16; A61; A61L; A61L2/00; A61L2/16; A61L2/23; A61L2/238; C; C07; C07F; C07F1/00; C07F1/005; C08; C08F; C08F8/00; C11; C11D; C11D1/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A PROCESS FOR PREPARING A COMPOSITION OF LOW IONIZATION OF A HEAVY METAL IN ASSOCIATION WITH POLYVINYLPYRROLIDONE WHICH COMPRISES REACTING A WATER-SOLUBLE POLYVINYLPYRROLIDONE WITH A WATER-SOLUBLE HEAVY METAL COMPOUND UNDER CONDITIONS CONDUCIVE TO THE FORMATION OF SAID METAL ASSOCIATION PRODUCT UNTIL SAID ASSOCIATION PRODUCT IS FORMED, SAID REACTION BEING CARRIED OUT IN A MEDIUM SELECTED FROM THE GROUP CONSISTING OF AN AQUEOUS MEDIUM AND METHYL ALCOHOL AND IN WHICH SAID HEAVY METAL COMPOUND AND SAID POLYVINYLPYRROLIDONE ARE SOLUBLE, SAID METAL ASSOCIATION PRODUCT REMAINING IN SOLUTION AFTER THE REACTION, AND SAID HEAVY METAL COMPOUND BEING SELECTED FROM THE GROUP CONSISTING OF SILVER OXIDE, SILVER PEROXIDE, SILVER NITRATE, COBALTOUS OXIDE, AND FERRIC-CHLORIDE.
Claim 2
Dependent Claim
110 words
A PROCESS FOR PREPARING A COMPOSITION OF LOW IONIZATION OF A HEAVY METAL IN ASSOCIATION WITH POLYVINYLPYRROLIDONE WHICH COMPRISES REACTING A WATER-SOLUBLE POLYVINYLPYRROLIDONE WITH A WATER-SOLUBLE HEAVY METAL COMPOUND UNDER CONDITIONS CONDUCIVE TO THE FORMATION OF SAID METAL ASSOCIATION PRODUCT UNTIL SAID ASSOCIATION PRODUCT IS FORMED, SAID REACTION BEING CARRIED OUT IN A MEDIUM SELECTED FROM THE GROUP CONSISTING OF AN AQUEOUS MEDIUM AND METHYL ALCOHOL AND IN WHICH SAID HEAVY METAL COMPOUND AND SAID POLYVINYLPYRROLIDONE ARE SOLUBLE, SAID METAL ASSOCIATION PRODUCT REMAINING IN SOLUTION AFTER THE REACTION, AND SAID HEAVY METAL COMPOUND BEING SELECTED FROM THE GROUP CONSISTING OF SILVER OXIDE, SILVER PEROXIDE, SILVER NITRATE, COBALTOUS OXIDE, AND FERRIC-CHLORIDE.
References Cited (Backward Citations)
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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) | 1966-03-18 | 1966-09-17 | 1967-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-18 | 1970-09-17 | 1971-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-18 | 1974-09-17 | 1975-03-19 | $7700.00 | Window Closed / Lapsed |