US3542906A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of butadiene-styrene graft copolymers with a catalyst containing a nickel complex
Assignee: Bridgestone Corp
•
Filing: 1968-07-02
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Granted: 1970-11-24
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Expires: 1988-07-02
Abstract
No abstract record available.
Inventors
- 👤 Akira Onishi
- 👤 Shiro Anzai
- 👤 Toshio Yoshimoto
- 👤 Koichi Irako
- 👤 Motoki Ishii
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:56
CPC Classifications
C; C08; C08F; C08F236/00; C08F236/02; C08F236/04; C08F236/10; C08F279/00; C08F279/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB820089A
Cited
US3070587A
Cited
US3068180A
Cited
US3165503A
Cited
US3170905A
Cited
US3215682A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-23 | 1974-05-25 | 1974-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-23 | 1978-05-25 | 1978-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-23 | 1982-05-25 | 1982-11-24 | $7700.00 | Window Closed / Lapsed |