US4076644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Storage stabile polyol-chlorofluoroalkane composition
Assignee: EIDP Inc
•
Filing: 1976-01-08
•
Granted: 1978-02-28
•
Expires: 1996-01-08
Abstract
Abstract Preparation of polyurethane foams using 1,1-dichloro-2,2,2-trifluoroethane as a blowing agent eliminates the need for stabilizers in component mixtures.
Inventors
- 👤 James Gordon Burt
- 👤 Howard Elliot Phillips
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:48
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/04; C08J9/12; C08J9/14; C08J9/143; C08J9/144; C08J2375/00; C08J2375/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
31 words
A mixture comprising polyol suitable for polyurethane foam preparation and about from 1 to 40 parts by weight per 100 parts by weight of polyol, of CHCl 2 CF 3 .
Claim 2
Dependent Claim
31 words
A mixture comprising polyol suitable for polyurethane foam preparation and about from 1 to 40 parts by weight per 100 parts by weight of polyol, of CHCl 2 CF 3 .
References Cited (Backward Citations)
US3072582A
Cited
US3391093A
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US3108976A
Cited
US3230185A
Cited
US3183192A
Cited
US3405069A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-02-27 | 1981-08-29 | 1982-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-27 | 1985-08-29 | 1986-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-27 | 1989-08-29 | 1990-02-28 | $7700.00 | Window Closed / Lapsed |