Patent US2802801A successfully refreshed from Google Patents.
US2802801A
Expired / Lapsed
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Solutions of vinylidene chloride terpolymers in tetrahydrofuran and uses thereof
Assignee: Bridgestone Firestone Inc
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Filing: 1953-11-23
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Granted: 1957-08-13
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Expires: 1973-11-23
Abstract
No abstract record available.
Inventors
- 👤 Robert J Reid
- 👤 Byron H Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:53
CPC Classifications
C; C09; C09D; C09D127/00; C09D127/02; C09D127/04; C09D127/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A SOLUTION IN A SOLVENT COMPOSED ESSENTIALLY OF TETRAHYDROFURAN OF AT LEAST 35 PERCENT BY WEIGHT OF CRYSTALLINE TERPOLYMER COMPOSED OF 85 TO 90 PERCENT BY WEIGHT OF VINYLIDENE CHLORIDE, 5 TO 10 PERCENT BY WEIGHT OF VINYL CHLORIDE, AND 5 TO 10 PERCENT BY WEIGHT OF MONOMER FROM THE CLASS CONSISTING OF THE METHYL AND ETHYL ESTERS AND THE NITRILES OF ACRYLIC AND METHACRYLIC ACIDS.
Claim 2
Dependent Claim
66 words
A SOLUTION IN A SOLVENT COMPOSED ESSENTIALLY OF TETRAHYDROFURAN OF AT LEAST 35 PERCENT BY WEIGHT OF CRYSTALLINE TERPOLYMER COMPOSED OF 85 TO 90 PERCENT BY WEIGHT OF VINYLIDENE CHLORIDE, 5 TO 10 PERCENT BY WEIGHT OF VINYL CHLORIDE, AND 5 TO 10 PERCENT BY WEIGHT OF MONOMER FROM THE CLASS CONSISTING OF THE METHYL AND ETHYL ESTERS AND THE NITRILES OF ACRYLIC AND METHACRYLIC ACIDS.
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) | 1960-08-12 | 1961-02-11 | 1961-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-12 | 1965-02-11 | 1965-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-12 | 1969-02-11 | 1969-08-13 | $7700.00 | Window Closed / Lapsed |