Patent US3492250A successfully refreshed from Google Patents.
US3492250A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Closed cell foam
Assignee: EIDP Inc
•
Filing: 1963-05-21
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Granted: 1970-01-27
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Expires: 1983-05-21
Abstract
No abstract record available.
Inventors
- 👤 Alden J Deyrup
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:02
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/30; Y; Y10; Y10S; Y10S521/00; Y10S521/907
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2155658A
Cited
US2162618A
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US2332460A
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US2362026A
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US2673723A
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US2876085A
Cited
US2720468A
Cited
US3017282A
Cited
US3318856A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-26 | 1973-07-28 | 1974-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-26 | 1977-07-28 | 1978-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-26 | 1981-07-28 | 1982-01-27 | $7700.00 | Window Closed / Lapsed |