Patent US3149083A successfully refreshed from Google Patents.
US3149083A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cellular polyetherurethanes and methods of making same
Assignee: Aerojet Rocketdyne Holdings Inc
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Filing: 1961-04-28
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Granted: 1964-09-15
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Expires: 1981-04-28
Abstract
No abstract record available.
Inventors
- 👤 George T Gmitter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:59
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/08; C08G18/10; C08G2110/00; C08G2110/0008; C08G2110/0083; Y; Y10; Y10S; Y10S521/00; Y10S521/918
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
THE METHOD OF MAKING A CELLULAR, FLEXIBLE POLYURETHANE COMPRISING REACTING A POLYALKYLENE TETHER GLYCOL HAVING A MOLECULAR WEIGHT OF FROM 750 TO 10,000, AN ORGANIC POLYISOCYANATE HAVING FROM 2 TO 3 ISOCYANATO GROUPS, THE MOLAR RATIO OF SAID GLYCOL TO SAID POLYISOCYANATE BEING FROM 1:1.1 TO 1:12, FROM 0.5% BY WEIGHT OF WATER BASED ON THE WEIGHT OF SAID POLYETHER GLYCOL AND SAID POLYISOCYANATE, AND FROM 0.5 TO 6% BY WEIGHT BASED ON THE WEIGHT OF SAID POLYETHER GLYCOL AND SAID POLYISOCYANATE OF AN ORGANIC CROSSLINKING AGENT FOR THE POLYETHER-URETHANE FOAMING REACITON HAVING 3 TO 14 CARBON ATOMS AND AT LEAST 3 AN NO MORE THAN 4 FUNCTIONAL GROUPS, SAID FUNCTIONAL GROUPS CONTAINING ACTIVE HYDROGEN ATOMS AND BEING SELECTED FROM THE GROUP CONSISING OF AMINO GROUPS AND
Claim 2
Independent Claim
127 words
THE METHOD OF MAKING A CELLULAR, FLEXIBLE POLYURETHANE COMPRISING REACTING A POLYALKYLENE TETHER GLYCOL HAVING A MOLECULAR WEIGHT OF FROM 750 TO 10,000, AN ORGANIC POLYISOCYANATE HAVING FROM 2 TO 3 ISOCYANATO GROUPS, THE MOLAR RATIO OF SAID GLYCOL TO SAID POLYISOCYANATE BEING FROM 1:1.1 TO 1:12, FROM 0.5% BY WEIGHT OF WATER BASED ON THE WEIGHT OF SAID POLYETHER GLYCOL AND SAID POLYISOCYANATE, AND FROM 0.5 TO 6% BY WEIGHT BASED ON THE WEIGHT OF SAID POLYETHER GLYCOL AND SAID POLYISOCYANATE OF AN ORGANIC CROSSLINKING AGENT FOR THE POLYETHER-URETHANE FOAMING REACITON HAVING 3 TO 14 CARBON ATOMS AND AT LEAST 3 AN NO MORE THAN 4 FUNCTIONAL GROUPS, SAID FUNCTIONAL GROUPS CONTAINING ACTIVE HYDROGEN ATOMS AND BEING SELECTED FROM THE GROUP CONSISING OF AMINO GROUPS AND
References Cited (Backward Citations)
US2850464A
Cited
US2866774A
Cited
US2871226A
Cited
US2871227A
Cited
US2879233A
Cited
US2901445A
Cited
US2888411A
Cited
US2993013A
Cited
US2957832A
Cited
US2915496A
Cited
US2977330A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-15 | 1968-03-16 | 1968-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-15 | 1972-03-16 | 1972-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-15 | 1976-03-16 | 1976-09-15 | $7700.00 | Window Closed / Lapsed |