Patent US1709276A successfully refreshed from Google Patents.
Patent US3600340A successfully refreshed from Google Patents.
US3600340A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethane foam
Assignee: BASF Corp
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Filing: 1969-06-30
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Granted: 1971-08-17
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Expires: 1989-06-30
Abstract
Abstract RESILIENT CELLULAR MATERIAL COMPRISING A CELLULAR MASS OF POLYURETHANE AND FINE PARTICLES OF POLYETHYLENE RESIN.
Inventors
- 👤 John T Patton Jr
- 👤 Louis C Pizzini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:21
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0061; C08J2375/00; C08J2375/04; C08J2423/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-16 | 1975-02-15 | 1975-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-16 | 1979-02-15 | 1979-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-16 | 1983-02-15 | 1983-08-17 | $7700.00 | Window Closed / Lapsed |