US2850470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined propylene carbonate and aromatic hydrocarbon solution of a vinyl resin
Assignee: American Marietta Co
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Filing: 1956-08-31
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Granted: 1958-09-02
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Expires: 1976-08-31
Abstract
No abstract record available.
Inventors
- 👤 Gerald P Roeser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:35
CPC Classifications
C; C09; C09D; C09D127/00; C09D127/02; C09D127/04; C09D127/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A RESIN SOLUTION COMPRISING A COPOLYMER OF VINYL CHLORIDE AND VINYL ACETATE CONTAINING LESS THAN 90% BY WEIGHT OF VINYL CHLORIDE IN SAID COPOLYMER, SAID COPOLYMER BEING DISSOVED IN A SOLVENT MEDIUM CONSISTING ESSENTIALLY OF AN AROMATIC HYDROCARBON SELECTED FROM THE GROUP CONSISTING OF BENZENE, TOLUENE, XYLENE, AND MIXTURES THEREOF, AND PROPULENE CARBONATE, SAID MIXTURE CONTAINING FROM 9% TO ABOUT 75% BY WEIGHT OF PROPYLENE CARBONATE BASED ON THE COMBINED WEIGHT OF SAID PROPYLENE CARBONATE AND AROMATIC HYDROCARBON.
Claim 2
Dependent Claim
78 words
A RESIN SOLUTION COMPRISING A COPOLYMER OF VINYL CHLORIDE AND VINYL ACETATE CONTAINING LESS THAN 90% BY WEIGHT OF VINYL CHLORIDE IN SAID COPOLYMER, SAID COPOLYMER BEING DISSOVED IN A SOLVENT MEDIUM CONSISTING ESSENTIALLY OF AN AROMATIC HYDROCARBON SELECTED FROM THE GROUP CONSISTING OF BENZENE, TOLUENE, XYLENE, AND MIXTURES THEREOF, AND PROPULENE CARBONATE, SAID MIXTURE CONTAINING FROM 9% TO ABOUT 75% BY WEIGHT OF PROPYLENE CARBONATE BASED ON THE COMBINED WEIGHT OF SAID PROPYLENE CARBONATE AND AROMATIC HYDROCARBON.
References Cited (Backward Citations)
US2769792A
Cited
US2764469A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-01 | 1962-03-03 | 1962-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-01 | 1966-03-03 | 1966-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-01 | 1970-03-03 | 1970-09-02 | $7700.00 | Window Closed / Lapsed |