Patent US2689231A successfully refreshed from Google Patents.
US2689231A
Expired / Lapsed
US
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Copolymers of conjugate and nonconjugate drying oils, cyclopentadiene, and styrene
Assignee: PPG Industries Inc
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Filing: 1950-06-10
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Granted: 1954-09-14
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Expires: 1970-06-10
Abstract
No abstract record available.
Inventors
- 👤 James F Mckenna
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:50
CPC Classifications
C; C09; C09D; C09D125/00; C09D125/02; C09D125/04; C09D125/08; C09D125/14; C08; C08F; C08F242/00; C08F212/00; C08F212/02; C08F212/04; C08F212/06; C08F212/08; C08F232/00; C08F232/02; C08F232/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
AS A NEW COATING MATERIAL, A VISCOUS, HOMOGENEOUS COPOLYMER OF 5% TO 30% BY WEIGHT OF CYCLOPENTADIENE, 10% TO 45% BY WEIGHT OF A MONOMER COMPOUND CONSISTING OF A BENZENE RING HAVING AN A,B-ETHYLENICALLY UNSATURATED HYDROCARBON SIDE CHAIN, THE REMAINDER OF THE COPOLYMER BEING OF A MIXTURE OF GLYCERIDE OILS IN WHICH 15% TO 50% BY WEIGHT IS CHINA-WOOD OIL AND THE REMAINDER IS A NON-CONJUGATELY UNSATURATED DRYING GLYCERIDE OIL.
Claim 2
Dependent Claim
70 words
AS A NEW COATING MATERIAL, A VISCOUS, HOMOGENEOUS COPOLYMER OF 5% TO 30% BY WEIGHT OF CYCLOPENTADIENE, 10% TO 45% BY WEIGHT OF A MONOMER COMPOUND CONSISTING OF A BENZENE RING HAVING AN A,B-ETHYLENICALLY UNSATURATED HYDROCARBON SIDE CHAIN, THE REMAINDER OF THE COPOLYMER BEING OF A MIXTURE OF GLYCERIDE OILS IN WHICH 15% TO 50% BY WEIGHT IS CHINA-WOOD OIL AND THE REMAINDER IS A NON-CONJUGATELY UNSATURATED DRYING GLYCERIDE OIL.
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) | 1957-09-13 | 1958-03-15 | 1958-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-13 | 1962-03-15 | 1962-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-13 | 1966-03-15 | 1966-09-14 | $7700.00 | Window Closed / Lapsed |