Patent US3679126A successfully refreshed from Google Patents.
Patent US3450560A successfully refreshed from Google Patents.
US3450560A
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US
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Aluminum article covered by maleic anhydride modification polymers
Assignee: Chevron USA Inc
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Filing: 1963-07-03
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Granted: 1969-06-17
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Expires: 1983-07-03
Abstract
No abstract record available.
Inventors
- 👤 Robert Bacskai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:30
CPC Classifications
C; C08; C08F; C08F255/00; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24917; Y10T428/31504; Y10T428/31678; Y10T428/31692
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
AN ARTICLE COMPRISISNG ALUMINUM COVERED AT LEAST IN PART WITH A FILM OF A PRODUCT PREPARED BY CONTACTING A HYDROCARBON POLYMER OF MONO-A-OLEFIN MONOMERS OF FROM 2 TO 10 CARBON ATOMS WITH AT LEAST SUFFICIENT INERT SOLVENT TO SWELL SAID POLYMER, A FREE RADICAL CATALYST AND MALEIC ANHYDRIDE AT A TEMPERATURE IN THE RANGE OF 50*C. TO 175*C. FOR A PERIOD OF TIME IN WHICH AT LEAST 10% OF THE CATLYST IS DECOMPOSED, WHEREIN THERE IS AT LEAST 0.002 PART OF MALEIC ANHYRIDE PER PART OF POLYMER AND AT LEAST ABOUT 0.2 TO 5 PARTS OF CATALYST PER PART OF MALEIC ANHYDRIDE, SAID PRODUCT HAVING A LOWER INTRINSIC VISCOSITY THAN SAID POLYMER.
Claim 2
Dependent Claim
112 words
AN ARTICLE COMPRISISNG ALUMINUM COVERED AT LEAST IN PART WITH A FILM OF A PRODUCT PREPARED BY CONTACTING A HYDROCARBON POLYMER OF MONO-A-OLEFIN MONOMERS OF FROM 2 TO 10 CARBON ATOMS WITH AT LEAST SUFFICIENT INERT SOLVENT TO SWELL SAID POLYMER, A FREE RADICAL CATALYST AND MALEIC ANHYDRIDE AT A TEMPERATURE IN THE RANGE OF 50*C. TO 175*C. FOR A PERIOD OF TIME IN WHICH AT LEAST 10% OF THE CATLYST IS DECOMPOSED, WHEREIN THERE IS AT LEAST 0.002 PART OF MALEIC ANHYRIDE PER PART OF POLYMER AND AT LEAST ABOUT 0.2 TO 5 PARTS OF CATALYST PER PART OF MALEIC ANHYDRIDE, SAID PRODUCT HAVING A LOWER INTRINSIC VISCOSITY THAN SAID POLYMER.
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) | 1972-06-16 | 1972-12-16 | 1973-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-16 | 1976-12-16 | 1977-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-16 | 1980-12-16 | 1981-06-17 | $7700.00 | Window Closed / Lapsed |