US3179606A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cellular polyurethane plastic material with rapid high strength
Assignee: Dow Chemical Co
•
Filing: 1960-12-19
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Granted: 1965-04-20
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Expires: 1980-12-19
Abstract
No abstract record available.
Inventors
- 👤 Wesley E Prescott
- 👤 Stephen P Edwards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:35
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/65; C08G18/66; C08G18/6666; C08G18/667; C08G18/6681; C08G18/6685; C08G18/30; C08G18/32; C08G18/3225; C08G18/3228; C08G18/40; C08G18/48; C08G18/50; C08G18/5021; C08G18/5024
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
A CELLULAR POLYURETHANE PRODUCT PREPARED FROM A FOAMABLE COMPOSITION COMPRISING A MAJOR PROPORTION OF A POLYOXYALKYLENE POLYOL, FROM 80 TO 130% OF THE POLYOL EQUIVALENT OF AN ORGANIC DISOCYANATE, FROM 1 TO 7 WEIGHT PERCENT OF A CATALYST MIXTURE AND FROM 0.02 TO 50.0 WEIGHT PERCENT OF A POLYANINE HAVING THE FORMULA
Claim 2
Dependent Claim
52 words
A CELLULAR POLYURETHANE PRODUCT PREPARED FROM A FOAMABLE COMPOSITION COMPRISING A MAJOR PROPORTION OF A POLYOXYALKYLENE POLYOL, FROM 80 TO 130% OF THE POLYOL EQUIVALENT OF AN ORGANIC DISOCYANATE, FROM 1 TO 7 WEIGHT PERCENT OF A CATALYST MIXTURE AND FROM 0.02 TO 50.0 WEIGHT PERCENT OF A POLYANINE HAVING THE FORMULA
References Cited (Backward Citations)
US2953533A
Cited
US2955056A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-19 | 1968-10-19 | 1969-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-19 | 1972-10-19 | 1973-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-19 | 1976-10-19 | 1977-04-20 | $7700.00 | Window Closed / Lapsed |