US3454504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Open cell polyalkylene ether polyurethane
Assignee: Bridgestone Corp
•
Filing: 1965-03-29
•
Granted: 1969-07-08
•
Expires: 1985-03-29
Abstract
No abstract record available.
Inventors
- 👤 Korenori Murai
- 👤 Kiyo Fukuda
- 👤 Kenji Saotome
- 👤 Shigetake Sato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:25
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0061; C08J2375/00; C08J2375/04; C08J2375/08; C08J2423/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US3165483A
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US3317479A
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US3294711A
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US3270032A
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US3201359A
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US3314903A
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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) | 1972-07-07 | 1973-01-06 | 1973-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-07 | 1977-01-06 | 1977-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-07 | 1981-01-06 | 1981-07-08 | $7700.00 | Window Closed / Lapsed |