US3476933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Large-celled polyurethane foam
Assignee: Westinghouse Electric Corp
•
Filing: 1966-10-21
•
Granted: 1969-11-04
•
Expires: 1986-10-21
Abstract
No abstract record available.
Inventors
- 👤 Morris A Mendelsohn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:55
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/65; C08G18/66; C08G18/6666; C08G18/6692; C08G18/08; C08G18/16; C08G18/161; C08G18/163; C08G18/30; C08G18/34; C08G18/70; C08G18/72; C08G18/74; C08G18/76; C08G18/7607; C08J; C08J9/00; C08J9/36; C08J9/38; Y; Y10; Y10S; Y10S264/00; Y10S264/13
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2956968A
Cited
US3194773A
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US3095386A
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US3165483A
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US3149000A
Cited
US3325338A
Cited
US3178300A
Cited
US3386927A
Cited
US3341463A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-03 | 1973-05-05 | 1973-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-03 | 1977-05-05 | 1977-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-03 | 1981-05-05 | 1981-11-04 | $7700.00 | Window Closed / Lapsed |