US3406221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Interpolymers containing vinyl acetate, hydroxy esters of dicarboxylic acids, an ester plasticizing monomer and an alkyl acid maleate or fumarate
Assignee: Cook Paint and Varnish Co
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Filing: 1965-11-24
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Granted: 1968-10-15
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Expires: 1985-11-24
Abstract
No abstract record available.
Inventors
- 👤 Howard J Wright
- 👤 Michael B Prenosil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:12
CPC Classifications
C; C08; C08F; C08F222/00; C08F222/10; C08F222/12; C08F222/20; C08F218/00; C08F218/02; C08F218/04; C08F218/08; C09; C09D; C09D131/00; C09D131/02; C09D131/04; C08L; C08L61/00; C08L61/20; C08L61/26; C08L61/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
20 words
A COPOLYMER COMPRISING ON A WEIGHT BASIS: (1) 45-85% VINYL ACETATE; (2) 5-35% OF A HYDROXY COMPOUND OF THE FORMULA:
Claim 2
Dependent Claim
20 words
A COPOLYMER COMPRISING ON A WEIGHT BASIS: (1) 45-85% VINYL ACETATE; (2) 5-35% OF A HYDROXY COMPOUND OF THE FORMULA:
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-15 | 1972-04-15 | 1972-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-15 | 1976-04-15 | 1976-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-15 | 1980-04-15 | 1980-10-15 | $7700.00 | Window Closed / Lapsed |