Patent US3112281A successfully refreshed from Google Patents.
US3112281A
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Polyurethane foams and process for preparing same
Assignee: Wyandotte Chemicals Corp
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Filing: 1957-09-17
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Granted: 1963-11-26
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Expires: 1977-09-17
Abstract
No abstract record available.
Inventors
- 👤 Richard E Gromacki
- 👤 Kurt C Frisch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:30
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/65; C08G18/66; C08G18/6666; C08G18/667; C08G18/6681; C08G18/6688; C08G18/40; C08G18/48; C08G18/50; C08G18/5021; C08G2110/00; C08G2110/0008; C08G2110/0016; C08G2110/0025; C08G2110/0041; C08G2110/005; C08G2110/0058; C08G2110/0083
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A POLYURETHANE FOAM COMPOSITION OBTAINED BY SIMULTANEOUSLY MIXING AND REACTING A PLURALITY OF REACTANTS CONSISTING OF THE FOLLOWING: (A) A POLYOL SELECTED FROM THE GROUP CONSISTING OF: (1) A POLYOL SELECTED FROM THE GROUP CONSISTING OF: THAN 292 WHICH IS A DITERTIARY LOWER-ALKYLENE DIAMINE HAVING BOTH OF ITS TWO TERTIARY NITROGEN ATOMS FURTHER SUBSTITUTED AS INDICATED BY THE FORMULA:
Claim 2
Dependent Claim
59 words
A POLYURETHANE FOAM COMPOSITION OBTAINED BY SIMULTANEOUSLY MIXING AND REACTING A PLURALITY OF REACTANTS CONSISTING OF THE FOLLOWING: (A) A POLYOL SELECTED FROM THE GROUP CONSISTING OF: (1) A POLYOL SELECTED FROM THE GROUP CONSISTING OF: THAN 292 WHICH IS A DITERTIARY LOWER-ALKYLENE DIAMINE HAVING BOTH OF ITS TWO TERTIARY NITROGEN ATOMS FURTHER SUBSTITUTED AS INDICATED BY THE FORMULA:
References Cited (Backward Citations)
US2674619A
Cited
US3042631A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-11-25 | 1967-05-27 | 1967-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-25 | 1971-05-27 | 1971-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-25 | 1975-05-27 | 1975-11-26 | $7700.00 | Window Closed / Lapsed |