Patent US2857303A successfully refreshed from Google Patents.
US2857303A
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Heat stabilized copolymerizate of a vinylidene monomer and an unsaturated polyester and method of preparing and using same
Assignee: Phillips Petroleum Co
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Filing: 1955-06-10
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Granted: 1958-10-21
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Expires: 1975-06-10
Abstract
No abstract record available.
Inventors
- 👤 Joseph F Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:13
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/09; C08K5/092; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31616; Y10T428/3162
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A COMPOSITION OF MATTER STABILIZED AGAINST HEAT DISTORTION COMPRISING THE POLYMERIZED PRODUCT OF AN UNSATURATED POLYESTER THE POLYMERIZED BY ESTERIFICATION OF A DIHYDRIC ALCOHOL AND AN ALIPHATIC ETHYLENIC UNSATURATED DICARBOXYLIC ACID, A POLYHYDROXY-POLYCARBOXY SUBSTITUTED HYDROCARBON RING COMPOUND WHEREIN THE HYDROXY AND CARBOXY SUBSTITUENTS EACH DO NOT EXCEED 3 AND ARE EQUAL IN NUMBER AND A VINYLIDENE MONOMER FREE OF ALIPHATIC CONJUGATED DOUBLE BONDS COPOLYMERIZABLE WITH SAID POLYESTER RESIN.
Claim 2
Dependent Claim
68 words
A COMPOSITION OF MATTER STABILIZED AGAINST HEAT DISTORTION COMPRISING THE POLYMERIZED PRODUCT OF AN UNSATURATED POLYESTER THE POLYMERIZED BY ESTERIFICATION OF A DIHYDRIC ALCOHOL AND AN ALIPHATIC ETHYLENIC UNSATURATED DICARBOXYLIC ACID, A POLYHYDROXY-POLYCARBOXY SUBSTITUTED HYDROCARBON RING COMPOUND WHEREIN THE HYDROXY AND CARBOXY SUBSTITUENTS EACH DO NOT EXCEED 3 AND ARE EQUAL IN NUMBER AND A VINYLIDENE MONOMER FREE OF ALIPHATIC CONJUGATED DOUBLE BONDS COPOLYMERIZABLE WITH SAID POLYESTER RESIN.
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) | 1961-10-20 | 1962-04-21 | 1962-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-20 | 1966-04-21 | 1966-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-20 | 1970-04-21 | 1970-10-21 | $7700.00 | Window Closed / Lapsed |