Patent US3208959A successfully refreshed from Google Patents.
US3208959A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cellular polyurethane stabilized with a halogen containing organic phosphite and method of making same
Assignee: Aerojet Rocketdyne Holdings Inc
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Filing: 1964-01-28
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Granted: 1965-09-28
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Expires: 1984-01-28
Abstract
No abstract record available.
Inventors
- 👤 George T Gmitter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:13
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0014; C08J9/0038; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/52; C08J2375/00; C08J2375/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
A CELLULAR ORGANIC POLYURETHANE HAVING A MINOR AMOUNT BY WEIGHT OF AN ORGANIC TETRAVALENT TIN SALT CATALYST AND ALSO CONTAINING A MINOR AMOUNT BY WEIGHT SUFFICIENT TO PREVENT HEAT DEGRADATION OF SAID POLYURETHANE BY SAID CATALYST OF AN ORGANIC PHOSPHATE SELECTED FROM THE GROUP CONSISTING OF FLUORINE AND CHLORINE CONTAINING MONOMERIC TRIORGANIC PHOSPHITES AND MIXTURES THEREOF.
Claim 2
Dependent Claim
56 words
A CELLULAR ORGANIC POLYURETHANE HAVING A MINOR AMOUNT BY WEIGHT OF AN ORGANIC TETRAVALENT TIN SALT CATALYST AND ALSO CONTAINING A MINOR AMOUNT BY WEIGHT SUFFICIENT TO PREVENT HEAT DEGRADATION OF SAID POLYURETHANE BY SAID CATALYST OF AN ORGANIC PHOSPHATE SELECTED FROM THE GROUP CONSISTING OF FLUORINE AND CHLORINE CONTAINING MONOMERIC TRIORGANIC PHOSPHITES AND MIXTURES THEREOF.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |