Patent US3304196A successfully refreshed from Google Patents.
US3304196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mar-resistant products and process for producing same
Assignee: Wyeth Holdings LLC
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Filing: 1965-09-28
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Granted: 1967-02-14
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Expires: 1985-09-28
Abstract
No abstract record available.
Inventors
- 👤 Deichert William George
- 👤 Webb Richard Lansing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:16
CPC Classifications
C; C08; C08L; C08L67/00; C08L67/06; C08G; C08G63/00; C08G63/66; C08G63/668; C08G63/676; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31507; Y10T428/31855; Y10T428/31935
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
A PROCESS FOR IMPROVING THE MAR-RESISTANCE OF A RIGID PLASTIC SHEET AND ALSO IMPROVING THE BONDING OF THE SURFACE LAYER TO SAID SHEET COMPRISING CONTACTING A RIGID PLASTIC SHEET OF A POLYMER SELECTED FROM THE GROUP CONSISTING OF POLYACRYLATES, POLYSTYRENES, POLYVINYL HALIDES, POLYVINYL ACETATES AND POLYCARBONATES WITH A SOLUTION OF A POLYCARBONATE RESIN, EVAPORATING OFF THE SOLVENT, COATING THE THUS TREATED SHEET WITH S SUBSTANTIALLY LINEAR, WATERINSOLUBLE, NON-GELLED, UNSATURATED POLYESTER RESIN COMPOSITION CONSISTING ESSENTIALLY OF A BLEND OF (1) THE ESTERIFICATION REACTION PRODUCT OF FUMARIC ACID AND A GLYCOL SELECTED FROM THE GROUP CONSISTING OF POLYETHLENE GLYCOL AND POLYPROPYLENE GLYCOL WHEREIN SAID GLYCOL HAS BETWEEN 6 AND 39 CARBON ATOMS, SAID RECTION PRODUCT HAVING AN ACID NUMBER BELOW ABOUT 35 AND (2) FROM ABOUT 10% TO ABOAUT 40%, BY WEIGHT, BASED ON THE TOTAL WEIGHT OF (1) AND (2), OF AT LEAST ONE MONOMER COPOLYMERIZABLE THEREWITH AND CURING SAID POLYESTER RESIN.
Claim 2
Dependent Claim
151 words
A PROCESS FOR IMPROVING THE MAR-RESISTANCE OF A RIGID PLASTIC SHEET AND ALSO IMPROVING THE BONDING OF THE SURFACE LAYER TO SAID SHEET COMPRISING CONTACTING A RIGID PLASTIC SHEET OF A POLYMER SELECTED FROM THE GROUP CONSISTING OF POLYACRYLATES, POLYSTYRENES, POLYVINYL HALIDES, POLYVINYL ACETATES AND POLYCARBONATES WITH A SOLUTION OF A POLYCARBONATE RESIN, EVAPORATING OFF THE SOLVENT, COATING THE THUS TREATED SHEET WITH S SUBSTANTIALLY LINEAR, WATERINSOLUBLE, NON-GELLED, UNSATURATED POLYESTER RESIN COMPOSITION CONSISTING ESSENTIALLY OF A BLEND OF (1) THE ESTERIFICATION REACTION PRODUCT OF FUMARIC ACID AND A GLYCOL SELECTED FROM THE GROUP CONSISTING OF POLYETHLENE GLYCOL AND POLYPROPYLENE GLYCOL WHEREIN SAID GLYCOL HAS BETWEEN 6 AND 39 CARBON ATOMS, SAID RECTION PRODUCT HAVING AN ACID NUMBER BELOW ABOUT 35 AND (2) FROM ABOUT 10% TO ABOAUT 40%, BY WEIGHT, BASED ON THE TOTAL WEIGHT OF (1) AND (2), OF AT LEAST ONE MONOMER COPOLYMERIZABLE THEREWITH AND CURING SAID POLYESTER RESIN.
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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) | 1970-02-13 | 1970-08-15 | 1971-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-13 | 1974-08-15 | 1975-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-13 | 1978-08-15 | 1979-02-14 | $7700.00 | Window Closed / Lapsed |