US3591548A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized interconnected sbr copolymer
Assignee: Bridgestone Firestone Inc
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Filing: 1969-06-16
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Granted: 1971-07-06
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Expires: 1989-06-16
Abstract
Abstract AN UNVULCANIZED, INTERCONNECTED (LINEAR RUBBERY POLYMER) IS STABILIZED BY MEANS OF A BORATE OF A METAL SUCH AS MAGNESIUM, ZINC OR LEAD. IN THE RESULTING POLYMER, BUTADIENE-STYRENE COPOLYMER UNITS ARE INTERCONNECTED BY SILICON TETRACHLORIDE.
Inventors
- 👤 Joseph A Beckman
- 👤 Kenneth C Eberly
- 👤 Edward L Kay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:13
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/38
Claims Analysis
Total Claims: 0
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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) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |