US3050477A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making polyurethane foam using an organic silane
Assignee: Aerojet Rocketdyne Holdings Inc
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Filing: 1959-10-13
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Granted: 1962-08-21
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Expires: 1979-10-13
Abstract
No abstract record available.
Inventors
- 👤 George T Gmitter
- 👤 Emery V Braidich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:57
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/16; C08G18/22; C08G18/24; C08G18/28; C08G18/40; C08G18/48; C08J; C08J9/00; C08J9/0014; C08J9/0033; C08J9/0042; C08J2375/00; C08J2375/04; C08J2375/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
THE METHOD WHICH COMPRISES REACTING (1) AT LEAST ONE ORGANIC POLYISOCYANATE WITH (2) AT LEAST ONE POLYETHER POLYOL CONTAINING AT LEAST TWO ACTIVE ALCOHOLIC HYDROXYL RADICALS IN AMOUNTS SUFFICIENT TO FORM A POLYURETHANE IN ADMIXTURE WITH (3) A MINOR AMOUNT BY WEIGHT OF A FOAMING AGENT SUFFICIENT TO FOAM THE REACTION MASS OF SAID POLYISOCYANATE AND SAID POLYOL AND IN CONTACT WITH(4) A MINOR AMOUNT BY WEIGHT, BASED ON THE TOTAL WEIGHT OF POLYOL PRESENT AND SUFFICIENT TO STABILIZE THE FOAMING REACTION OF SAID POLYISOCYANATE AND SAID POLYOL AND TO OBTAIN CELLS OF SUBSTANTIALLY UNIFORM SIZE IN THE RESULTING POLYETHERURETHANE, OF AT LEAST ONE ORGANIC SILANE HAVING THE FORMULA
Claim 2
Independent Claim
109 words
THE METHOD WHICH COMPRISES REACTING (1) AT LEAST ONE ORGANIC POLYISOCYANATE WITH (2) AT LEAST ONE POLYETHER POLYOL CONTAINING AT LEAST TWO ACTIVE ALCOHOLIC HYDROXYL RADICALS IN AMOUNTS SUFFICIENT TO FORM A POLYURETHANE IN ADMIXTURE WITH (3) A MINOR AMOUNT BY WEIGHT OF A FOAMING AGENT SUFFICIENT TO FOAM THE REACTION MASS OF SAID POLYISOCYANATE AND SAID POLYOL AND IN CONTACT WITH(4) A MINOR AMOUNT BY WEIGHT, BASED ON THE TOTAL WEIGHT OF POLYOL PRESENT AND SUFFICIENT TO STABILIZE THE FOAMING REACTION OF SAID POLYISOCYANATE AND SAID POLYOL AND TO OBTAIN CELLS OF SUBSTANTIALLY UNIFORM SIZE IN THE RESULTING POLYETHERURETHANE, OF AT LEAST ONE ORGANIC SILANE HAVING THE FORMULA
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) | 1965-08-20 | 1966-02-19 | 1966-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-20 | 1970-02-19 | 1970-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-20 | 1974-02-19 | 1974-08-21 | $7700.00 | Window Closed / Lapsed |