Patent US2514210A successfully refreshed from Google Patents.
US2514210A
Expired / Lapsed
US
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Stabilization of synthetic rubbers
Assignee: Bridgestone Firestone Inc
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Filing: 1949-11-02
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Granted: 1950-07-04
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Expires: 1969-11-02
Abstract
No abstract record available.
Inventors
- 👤 Harry E Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:46
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/41
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
THE PROCESS OF STABILIZING RUBBER-LIKE COPOLYMER OF A CONJUGATED-DIENE MONOMER AND A VINYL AROMATIC MONOMER WHICH COMPRISES MIXING THEREWITH A SMALL AMOUNT OF A STABILIZER OF THE CLASS CONSISTING OF STANNOUS DIPHENOL SULFOXIDE, STANNOUS DI(HALOGEN-SUBSTITUTED PHENOL) SULFOXIDES, AND STANNOUS DI(HYDROCARBON-SUBSTITUTED PHENOL) SULFOXIDES IN WHICH THE TOTAL OF THE CARBON ATOMS SUBSTITUTED ON EACH PHENOL NUCLEUS DOES NOT EXCEED TWENTY.
Claim 2
Dependent Claim
59 words
THE PROCESS OF STABILIZING RUBBER-LIKE COPOLYMER OF A CONJUGATED-DIENE MONOMER AND A VINYL AROMATIC MONOMER WHICH COMPRISES MIXING THEREWITH A SMALL AMOUNT OF A STABILIZER OF THE CLASS CONSISTING OF STANNOUS DIPHENOL SULFOXIDE, STANNOUS DI(HALOGEN-SUBSTITUTED PHENOL) SULFOXIDES, AND STANNOUS DI(HYDROCARBON-SUBSTITUTED PHENOL) SULFOXIDES IN WHICH THE TOTAL OF THE CARBON ATOMS SUBSTITUTED ON EACH PHENOL NUCLEUS DOES NOT EXCEED TWENTY.
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) | 1953-07-03 | 1954-01-02 | 1954-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-03 | 1958-01-02 | 1958-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-03 | 1962-01-02 | 1962-07-04 | $7700.00 | Window Closed / Lapsed |