Patent US3718613A successfully refreshed from Google Patents.
US3718613A
Expired / Lapsed
US
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Polyurethane foam reticulated by fire-polishing method
Assignee: Motor Wheel Corp
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Filing: 1970-10-26
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Granted: 1973-02-27
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Expires: 1990-10-26
Abstract
Abstract A RETICULATED FOAM MADE BY FIRE POLISHING A CELLULAR PRODUCT MADE BY REACTING A MIXTURE OF A HYDROCARBON POLYOL OF 500 TO 10,000 MOLECULAR WEIGHT, AN ORGANIC POLYISOCYANATE, AND A BLOWING AGENT, WHERE THE BLOWING AGENT MAY BE WATER OR OTHER LOW BOILING SUBSTANCES.
Inventors
- 👤 M Conger
- 👤 T Evans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:19
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/67; C08G18/69; C08J; C08J9/00; C08J9/36; C08J9/38; C08G2101/00
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) | 1976-02-27 | 1976-08-28 | 1977-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-27 | 1980-08-28 | 1981-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-27 | 1984-08-28 | 1985-02-27 | $7700.00 | Window Closed / Lapsed |