Patent US2654124A successfully refreshed from Google Patents.
US3264237A
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Modification of cis-polybutadiene with a hydrocarbon oil, a fatty acid and a tackifier
Assignee: Covestro International SA
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Filing: 1960-09-28
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Granted: 1966-08-02
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Expires: 1980-09-28
Abstract
No abstract record available.
Inventors
- 👤 Donald V Sarbach
- 👤 Robert J Ettinger
- 👤 Macey Joseph Hugh
- 👤 J C Gipson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:18
CPC Classifications
C; C08; C08L; C08L9/00; C08K; C08K5/00; C08K5/01
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
86 words
A VULCANIZABLE PLASTIC RUBBER COMPOSITION OF NORMALIZED PROCESSING BEHAVIOR COMPRISING A RUBBERY HOMOPOLYMER OF BUTADIENE-1,3 IN WHICH AT LEAST ABOUT 80% OF THE BUTADIENE UNITS ARE JOINED CIS-1,4 AND CHARACTERIZED BY A FOUR-MINUTE ML MOONEY VISCOSITY AT 212*F. IN THE RANGE OF 35 TO 120 WHICH HAS BEEN COMBINED WITH (1) FROM ABOUT 1 TO ABOUT 25 PARTS BY WEIGHT PER 100 PARTS BY WEIGHT OF SAID RUBBER HOMOPOLYMER OF A HOMALIZING HYDROCARBON OIL HAVING A VISCOSITY-GRAVITY CONSTANT ABOVE ABOUT 0.79 AND BELOW ABOUT 1.0; (2)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-01 | 1970-01-31 | 1970-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-01 | 1974-01-31 | 1974-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-01 | 1978-01-31 | 1978-08-02 | $7700.00 | Window Closed / Lapsed |