Patent US2686170A successfully refreshed from Google Patents.
US2686170A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilization of vinylidene chloride resins with 4-methyl-umbelliferone benzoates
Assignee: Bridgestone Firestone Inc
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Filing: 1952-08-13
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Granted: 1954-08-10
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Expires: 1972-08-13
Abstract
No abstract record available.
Inventors
- 👤 Chris E Best
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:35
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/15; C08K5/151; C08K5/1545
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
A LIGHT-STABLE, CRYSTALLINE, VINYLIDENE CHLORIDE RESIN COMPOSITION COMPRISING A RESIN SELECTED FROM THE GROUP CONSISTING OF POLYMERS OF VINYLIDENE CHLORIDE AND COPOLYMERS THEREOF WITH UP TO 15%, BASED ON THE WEIGHT OF SAID COPOLYMERS, OR OTHER UNSATURATED COMPOUNDS COPOLYMERIZABLE THEREWITH, TOGETHER WITH FROM 0.5 TO 7.0%, BASED ON THE WEIGHT OF SAID SELECTED RESIN, OF A COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
60 words
A LIGHT-STABLE, CRYSTALLINE, VINYLIDENE CHLORIDE RESIN COMPOSITION COMPRISING A RESIN SELECTED FROM THE GROUP CONSISTING OF POLYMERS OF VINYLIDENE CHLORIDE AND COPOLYMERS THEREOF WITH UP TO 15%, BASED ON THE WEIGHT OF SAID COPOLYMERS, OR OTHER UNSATURATED COMPOUNDS COPOLYMERIZABLE THEREWITH, TOGETHER WITH FROM 0.5 TO 7.0%, BASED ON THE WEIGHT OF SAID SELECTED RESIN, OF A COMPOUND OF THE FORMULA
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-09 | 1958-02-08 | 1958-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-09 | 1962-02-08 | 1962-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-09 | 1966-02-08 | 1966-08-10 | $7700.00 | Window Closed / Lapsed |