Patent US3401128A successfully refreshed from Google Patents.
US3401128A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethane foam product and method of making same
Assignee: Hoover Universal Inc
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Filing: 1965-02-08
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Granted: 1968-09-10
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Expires: 1985-02-08
Abstract
No abstract record available.
Inventors
- 👤 Samuel M Terry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:18
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/33; C08J2375/00; C08J2375/04; C08J2475/00; C08J2475/04; C08J2475/08; Y; Y10; Y10S; Y10S264/00; Y10S264/07
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3050432A
Cited
US3114722A
Cited
US3133853A
Cited
GB898271A
Cited
GB898272A
Cited
GB938868A
Cited
GB920272A
Cited
US3193440A
Cited
US3251916A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-10 | 1972-03-11 | 1972-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-10 | 1976-03-11 | 1976-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-10 | 1980-03-11 | 1980-09-10 | $7700.00 | Window Closed / Lapsed |