US2560031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rubbery mixture of butadiene-styrene copolymer and polybutadiene
Assignee: Bridgestone Firestone Inc
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Filing: 1946-03-20
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Granted: 1951-07-10
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Expires: 1966-03-20
Abstract
No abstract record available.
Inventors
- 👤 Delbert C Cline
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:40
CPC Classifications
C; C08; C08L; C08L9/00; C08L9/06; C08L2205/00; C08L2205/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
41 words
A VULCANIZATE CHARACTERIZED BY SUPERIOR TENSILE STRENGTH, ELONGATION, MODULUS AND FREEZE RESISTANCE INCLUDING TEN TO FORTY PARTS OF RUBBERY POLYBUTADIENE PREPARED BY HOMOPOLYMERIZATION OF 1,3-BUTADIENE IN AQUEOUS EMULSION AT 122* F. AND NINETY TO SIXTY PARTS OF A RUBBERY BUTADIENESTYRENE COPOLYMER.
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) | 1954-07-09 | 1955-01-08 | 1955-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-09 | 1959-01-08 | 1959-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-09 | 1963-01-08 | 1963-07-10 | $7700.00 | Window Closed / Lapsed |