US3471419A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pore-filled open-cell foam
Assignee: Individual
•
Filing: 1965-09-29
•
Granted: 1969-10-07
•
Expires: 1985-09-29
Abstract
No abstract record available.
Inventors
- 👤 Joseph Ronald Ehrlich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:17
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/36; C08J9/40; C08J9/42; C08J2423/00; C08J2425/00; C08J2491/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE1065962B
Cited
US2744075A
Cited
US2964424A
Cited
FR1291190A
Cited
FR1297892A
Cited
US3193440A
Cited
US3193438A
Cited
US3193441A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-06 | 1973-04-07 | 1973-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-06 | 1977-04-07 | 1977-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-06 | 1981-04-07 | 1981-10-07 | $7700.00 | Window Closed / Lapsed |