Patent US2972657A successfully refreshed from Google Patents.
US2581930A
Expired / Lapsed
US
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Stabilization of rubber with a mixture of a phenol sulfide and trivalent antimony oxide
Assignee: Bridgestone Firestone Inc
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Filing: 1950-01-25
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Granted: 1952-01-08
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Expires: 1970-01-25
Abstract
No abstract record available.
Inventors
- 👤 Harry E Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:17
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/37; C08K5/375; C08K5/59; Y; Y10; Y10S; Y10S524/00; Y10S524/925; Y10S524/929
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
RUBBER-LIKE COPOLYMER OF A HYDROCARBON CONJUGATED-DIENE MONOMER AND VINYL AROMATIC MONOMER STABILIZED WITH A RELATIVELY SMALL AMOUNT OF A MIXTURE OF TRIVALENT ANTIMONY OXIDE AND A PHENOL SULFIDE OF 2 TO 5 AROMATIC NUCLEI OF THE CLASS IN WHICH THE NUCLEI ARE UNSUBSTITUTED, THOSE WHICH ARE HALOGEN-SUBSTITUTED, AND THOSE WHICH ARE SUBSTITUTED WITH HYDROCARBON GROUPS OF 1 TO 10 CARBON ATOMS, WHICH MIXTURE CONTAINS AT LEAST 10 PARTS BY WEIGHT OF THE ONE COMPONENT AND UP TO 90 PARTS BY WEIGHT OF THE OTHER COMPONENT.
Claim 2
Dependent Claim
85 words
RUBBER-LIKE COPOLYMER OF A HYDROCARBON CONJUGATED-DIENE MONOMER AND VINYL AROMATIC MONOMER STABILIZED WITH A RELATIVELY SMALL AMOUNT OF A MIXTURE OF TRIVALENT ANTIMONY OXIDE AND A PHENOL SULFIDE OF 2 TO 5 AROMATIC NUCLEI OF THE CLASS IN WHICH THE NUCLEI ARE UNSUBSTITUTED, THOSE WHICH ARE HALOGEN-SUBSTITUTED, AND THOSE WHICH ARE SUBSTITUTED WITH HYDROCARBON GROUPS OF 1 TO 10 CARBON ATOMS, WHICH MIXTURE CONTAINS AT LEAST 10 PARTS BY WEIGHT OF THE ONE COMPONENT AND UP TO 90 PARTS BY WEIGHT OF THE OTHER COMPONENT.
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) | 1955-01-07 | 1955-07-09 | 1956-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-07 | 1959-07-09 | 1960-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-07 | 1963-07-09 | 1964-01-08 | $7700.00 | Window Closed / Lapsed |