US3265641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethanes prepared from a mixture of a sucrose polyether polyol and an oxyalkylated polyphenol
Assignee: PPG Industries Inc
•
Filing: 1962-04-16
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Granted: 1966-08-09
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Expires: 1982-04-16
Abstract
No abstract record available.
Inventors
- 👤 Wismer Marco
- 👤 Bras Louis R Le
- 👤 James F Foote
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:46
CPC Classifications
C; C07; C07H; C07H15/00; C07H15/02; C07H15/04; C07H15/08; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/487; C08G18/54; C08G18/546
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
26 words
A POLYURETHANE FOAM FORMED FROM A MIXTURE COMPRISING: (A) A PLURALITY OF OXYALKYLATED POLYHYDROXY COMPOUNDS, ONE OF SAID POLYHYDROXY COMPOUNDS BEING A POLYPHENOL OF THE FORMULA:
Claim 2
Dependent Claim
26 words
A POLYURETHANE FOAM FORMED FROM A MIXTURE COMPRISING: (A) A PLURALITY OF OXYALKYLATED POLYHYDROXY COMPOUNDS, ONE OF SAID POLYHYDROXY COMPOUNDS BEING A POLYPHENOL OF THE FORMULA:
References Cited (Backward Citations)
US3072582A
Cited
US2902478A
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US3153002A
Cited
US3073788A
Cited
US3164558A
Cited
US3085085A
Cited
US3075927A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-08 | 1970-02-07 | 1970-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-08 | 1974-02-07 | 1974-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-08 | 1978-02-07 | 1978-08-09 | $7700.00 | Window Closed / Lapsed |