US3474052A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rubber stabilized with phosphonitrilic compounds
Assignee: Bridgestone Firestone Inc
•
Filing: 1968-04-24
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Granted: 1969-10-21
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Expires: 1988-04-24
Abstract
No abstract record available.
Inventors
- 👤 Adel F Halasa
- 👤 Jerry D Hunt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 05:32
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/32; C08K5/00; C08K5/49; C08K5/5399; C08L; C08L21/00; C08L7/00; C08L85/00; C08L85/02; C08L9/00; C08L9/06; Y; Y10; Y10S; Y10S524/00; Y10S524/925
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2374646A
Cited
US3344087A
Cited
US3311622A
Cited
US3379510A
Cited
US3322859A
Cited
US3364189A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-20 | 1973-04-21 | 1973-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-20 | 1977-04-21 | 1977-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-20 | 1981-04-21 | 1981-10-21 | $7700.00 | Window Closed / Lapsed |