US3479319A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyethylene terephthalate stabilized with sodium pyrophosphate
Assignee: Bridgestone Firestone Inc
•
Filing: 1967-09-19
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Granted: 1969-11-18
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Expires: 1987-09-19
Abstract
No abstract record available.
Inventors
- 👤 William L Hergenrother
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:28
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2604459A
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US2938015A
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US2967852A
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US3039999A
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US3228898A
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US3201369A
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US3256237A
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US3329651A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-17 | 1973-05-19 | 1973-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-17 | 1977-05-19 | 1977-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-17 | 1981-05-19 | 1981-11-18 | $7700.00 | Window Closed / Lapsed |