US3133838A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition and method of coating with a mixture of allyl alcohol-styrene copolymer,epoxy resin and phosphoric acid
Assignee: Lubrizol Corp
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Filing: 1961-09-21
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Granted: 1964-05-19
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Expires: 1981-09-21
Abstract
No abstract record available.
Inventors
- 👤 William A Higgins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:42
CPC Classifications
C; C09; C09D; C09D163/00; C09D129/00; C09D129/02; C09D129/06; C09D129/08; C09D5/00; C09D5/08; C09D5/12; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31515; Y10T428/31522; Y10T428/31678; Y10T428/31692
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
82 words
A PROCESS FOR PROVIDING A PROTECTIVE FILM FOR A METAL SURFACE WHICH COMPRISES; (A) APPLYING TO SAID METAL SURFACE A FILM COMPRISING A MIXTURE OF ONE PART OF A COPOLYMER OF ALLYL ALCOHOL AND A STYRENE, SAID COPOLYMER HAVING AN AVERAGE MOLECULAR WEIGHT WITHIN THE RANGE OF 500-2500, FROM 0.05 TO 5.0 PARTS OF AN EPOXY ARYL ETHER, AND FROM 0.1 TO 2.0 PARTS OF PHOSPHORIC ACID, AND (B) HEATING SAID FILM OF (A) TO A TEMPERATURE WITHIN THE RANGE OF 100-400*C.
References Cited (Backward Citations)
US2692876A
Cited
US2962462A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-19 | 1967-11-18 | 1968-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-19 | 1971-11-18 | 1972-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-19 | 1975-11-18 | 1976-05-19 | $7700.00 | Window Closed / Lapsed |