Patent US3703482A successfully refreshed from Google Patents.
US3703482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethane foam
Assignee: Johns Manville Corp
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Filing: 1962-03-15
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Granted: 1972-11-21
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Expires: 1982-03-15
Abstract
Abstract THE INVENTION RELATES TO THE POLYURETHANE FOAM ART AND COMPRISES PRODUCING POLYUETHANE FOAMS WHEREIN A WOOD RESIN CONTAINING ACTIVE HYDROGENS IS INCORPORATED INTO EITHER OR BOTH OF THE POLYMERIZABLE FOAM INGREDIENTS.
Inventors
- 👤 Fred A Coglianese
- 👤 John E Mccorkle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:51
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/64; C08G18/6492
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) | 1975-11-21 | 1976-05-22 | 1976-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-21 | 1980-05-22 | 1980-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-21 | 1984-05-22 | 1984-11-21 | $7700.00 | Window Closed / Lapsed |