US2888408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of flexible cellular polyurethane material with ammonia
Assignee: Goodyear Tire and Rubber Co
•
Filing: 1955-03-21
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Granted: 1959-05-26
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Expires: 1975-03-21
Abstract
No abstract record available.
Inventors
- 👤 Jr Thomas H Rogers
- 👤 Newell R Bender
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:58
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/10; C08J; C08J9/00; C08J9/36; C08J9/40; C08J2375/00; C08J2375/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2657151A
Cited
US2721811A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-25 | 1962-11-24 | 1963-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-25 | 1966-11-24 | 1967-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-25 | 1970-11-24 | 1971-05-26 | $7700.00 | Window Closed / Lapsed |