US3194773A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of making polyurethane foams
Assignee: Union Carbide Corp
•
Filing: 1961-06-14
•
Granted: 1965-07-13
•
Expires: 1981-06-14
Abstract
No abstract record available.
Inventors
- 👤 Hostettler Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:43
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0061; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/16; C08G18/161; C08G18/163; C08G18/165; C08G18/22; C08G18/24; C08G18/242; C08G18/28; C08G18/40; C08G18/48; C08G18/4833; C08G18/4837; C08G18/4841; C08G18/50; C08G18/5021; C08G18/65; C08G18/66; C08G18/6666; C08G18/667; C08G18/70; F; F27; F27B; F27B5/00; F27B5/04; C08G2110/00; C08G2110/0008; C08G2110/0016; C08G2110/0025; C08G2110/0041; C08G2110/005; C08G2110/0058; C08G2110/0083; C08J2375/00; C08J2375/04; C08J2375/08; C08J2483/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A PROCESS FOR PREPARING STABLE, CURED, FOAMED POLYURETHANE RESINS WITHOUT THE APPLICATION OF EXTERNAL HEAT WHICH COMPRISES REACTING TOGETHER A POLYETHER POLYOL, AN ORGANIC POLYISOCYANATE, WATER AND A SURFACTANT COMPRISING A POLYSILOXANE-OXYLALKYLENE COPOLYMER IN THE PRESENCE OF AN ORGANO-TIN CATALYST CONTAINING A DIRECT CARBON TO TIN VALENCE BOND AND AT LEAST ONE BOND FROM SAID TIN TO A MEMBER OF THE GROUP CONSISTING OF HALOGEN, OXYGEN, NITROGEN, SULFUR AND PHOSPHORUS.
Claim 2
Dependent Claim
70 words
A PROCESS FOR PREPARING STABLE, CURED, FOAMED POLYURETHANE RESINS WITHOUT THE APPLICATION OF EXTERNAL HEAT WHICH COMPRISES REACTING TOGETHER A POLYETHER POLYOL, AN ORGANIC POLYISOCYANATE, WATER AND A SURFACTANT COMPRISING A POLYSILOXANE-OXYLALKYLENE COPOLYMER IN THE PRESENCE OF AN ORGANO-TIN CATALYST CONTAINING A DIRECT CARBON TO TIN VALENCE BOND AND AT LEAST ONE BOND FROM SAID TIN TO A MEMBER OF THE GROUP CONSISTING OF HALOGEN, OXYGEN, NITROGEN, SULFUR AND PHOSPHORUS.
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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) | 1968-07-12 | 1969-01-11 | 1969-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-12 | 1973-01-11 | 1973-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-12 | 1977-01-11 | 1977-07-13 | $7700.00 | Window Closed / Lapsed |