Patent US3703455A successfully refreshed from Google Patents.
US3703455A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrocoating method based on copolymers containing maleic half esters
Assignee: DeSoto Inc
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Filing: 1970-04-21
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Granted: 1972-11-21
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Expires: 1990-04-21
Abstract
Abstract STYRENE AND LIKE ETHYLENIC MONOMERS ARE COPOLYMERIZED WITH MALEIC, FUMARIC OR ITACONIC HALF ESTERS; MALEIC, FUMARIC OR ITACONIC BIS ESTERS BEING OPTIONALLY PRESENT, AT LEAST A PORTION OF THE ESTER GROUPS INCLUDING A HYDROCARBON CHAIN CONTAINING 6 OR MORE CARBON ATOMS. THE COPOLYMERIZATION IS CARRIED OUT IN SOLUTION IN AN ETHER ALCOHOL, SUCH AS 2-BUTOXY ETHANOL, OR IN BULK. THE COPOLYMERS MAY BE REACTED WITH A SMALL PROPORTION OF MONOEPOXIDE. THE COPOLYMERS ARE DISPERSIBLE IN WATER WITH THE AID OF A BASE AND ARE PARTICULARLY ADAPTED TO ELECTRODEPOSIT CORROSION AND DETERGENT RESISTANT FILMS.
Inventors
- 👤 Kazys Sekmakas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:59
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/44; C09D5/4407
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-11-21 | 1976-05-22 | 1976-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-21 | 1980-05-22 | 1980-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-21 | 1984-05-22 | 1984-11-21 | $7700.00 | Window Closed / Lapsed |