Patent US3114651A successfully refreshed from Google Patents.
US3114651A
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US
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Water insolubilization of acrylamido polymers with a salt of trivalent chromium
Assignee: Wyeth Holdings LLC
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Filing: 1960-07-22
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Granted: 1963-12-17
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Expires: 1980-07-22
Abstract
No abstract record available.
Inventors
- 👤 Anthony J Gentile
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:46
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/34; D21H17/37; C; C08; C08F; C08F8/00; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/263; D06M15/285; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/2164; Y10T442/2197; Y10T442/2762; Y10T442/277; Y10T442/2779
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A METHOD OF TEMPORARILY PROTECTING A SURFACE, WHICH COMPRISES APPLYING THERETO A SOLUTION OF A WATERSOLUBLE VINYL POLYMER PREPONDERANTLY COMPOSED OF CARBAMYLETHYLENE LINKAGES AND HAVING A PH BETWEEN 2.5 AND 7, SAID SOLUTION CONTAINING AN EFFECTIVE AMOUNT OF A DISSOLVED SALT OF TRIVALENT CHROMIUM AS INSOLUBILIZING AGENT FOR SAID POLYMER COATING SAID SURFACE WITH SAID SOLUTION, DRYING SAID COATING THEREBY FORMING A HARD FILM THEREON, AND SUBSEQUENTLY REMOVING SAID FILM BY APPLICATION OF AN AQUEOUS ALKALINE MEDIUM HAVING A TEMPERATURE IN EXCESS OF 60*C.
Claim 2
Independent Claim
84 words
A METHOD OF TEMPORARILY PROTECTING A SURFACE, WHICH COMPRISES APPLYING THERETO A SOLUTION OF A WATERSOLUBLE VINYL POLYMER PREPONDERANTLY COMPOSED OF CARBAMYLETHYLENE LINKAGES AND HAVING A PH BETWEEN 2.5 AND 7, SAID SOLUTION CONTAINING AN EFFECTIVE AMOUNT OF A DISSOLVED SALT OF TRIVALENT CHROMIUM AS INSOLUBILIZING AGENT FOR SAID POLYMER COATING SAID SURFACE WITH SAID SOLUTION, DRYING SAID COATING THEREBY FORMING A HARD FILM THEREON, AND SUBSEQUENTLY REMOVING SAID FILM BY APPLICATION OF AN AQUEOUS ALKALINE MEDIUM HAVING A TEMPERATURE IN EXCESS OF 60*C.
References Cited (Backward Citations)
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Cited
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US2544668A
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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) | 1966-12-16 | 1967-06-17 | 1967-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-16 | 1971-06-17 | 1971-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-16 | 1975-06-17 | 1975-12-17 | $7700.00 | Window Closed / Lapsed |