US3149083A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cellular polyetherurethanes and methods of making same
Assignee: Aerojet Rocketdyne Holdings Inc
•
Filing: 1961-04-28
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Granted: 1964-09-15
•
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 01:54
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
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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 |