Patent US4919112A successfully refreshed from Google Patents.
Patent US3761013A successfully refreshed from Google Patents.
Patent US2955056A successfully refreshed from Google Patents.
US2955056A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethane foams coated with a polyurethane elastomer
Assignee: EIDP Inc
•
Filing: 1959-02-27
•
Granted: 1960-10-04
•
Expires: 1979-02-27
Abstract
No abstract record available.
Inventors
- 👤 Roger E Knox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:01
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/36; C08J9/40; C08J9/42; C08J2375/00; C08J2375/04; C08J2475/00; Y; Y10; Y10S; Y10S206/00; Y10S206/819; Y10S521/00; Y10S521/918; Y10T; Y10T428/00; Y10T428/27; Y10T428/31504; Y10T428/31551; Y10T428/31554
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A RESILIENT CELLULAR POLYURETHANE COMPOSITE STRUCTURE COMPRISING A RESILIENT POLYURETHANE FOAM HAVING A CURED POLYURETHANE ELASTOMER COATING COMPOSITION ON SUBSTANTIALLY ALL OF THE CELL WALLS THEREOF, SAID COATING COMPOSITION BEING OBTAINED FROM AN ISOCYANATE-TERMINATED POLYURETHANE POLYMER AND A COMPOUND HAVING A PLURALITY OF GROUPS WHICH ARE CAPABLE OF REACTING WITH ISOCYANATE GROUPS, SAID COMPOUND BEING SELECTED FROM THE GROUP CONSISTING OF ORGANIC POLYOLS, ORGANIC DIAMINES AND MIXTURES THEREOF, SAID RESILIENT POLYURETHANE FOAM BEING SUBSTANTIALLY OPEN-CELLED AND HAVING A DENSITY NOT GREATER THAN ABOUT 3 POUNDS PER CUBIC FOOT PRIOR TO BEING COATED WITH SAID COATING COMPOSITION.
Claim 2
Dependent Claim
96 words
A RESILIENT CELLULAR POLYURETHANE COMPOSITE STRUCTURE COMPRISING A RESILIENT POLYURETHANE FOAM HAVING A CURED POLYURETHANE ELASTOMER COATING COMPOSITION ON SUBSTANTIALLY ALL OF THE CELL WALLS THEREOF, SAID COATING COMPOSITION BEING OBTAINED FROM AN ISOCYANATE-TERMINATED POLYURETHANE POLYMER AND A COMPOUND HAVING A PLURALITY OF GROUPS WHICH ARE CAPABLE OF REACTING WITH ISOCYANATE GROUPS, SAID COMPOUND BEING SELECTED FROM THE GROUP CONSISTING OF ORGANIC POLYOLS, ORGANIC DIAMINES AND MIXTURES THEREOF, SAID RESILIENT POLYURETHANE FOAM BEING SUBSTANTIALLY OPEN-CELLED AND HAVING A DENSITY NOT GREATER THAN ABOUT 3 POUNDS PER CUBIC FOOT PRIOR TO BEING COATED WITH SAID COATING COMPOSITION.
References Cited (Backward Citations)
US2721811A
Cited
US2900278A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-04 | 1964-04-04 | 1964-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-04 | 1968-04-04 | 1968-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-04 | 1972-04-04 | 1972-10-04 | $7700.00 | Window Closed / Lapsed |