Patent US3546145A successfully refreshed from Google Patents.
US3546145A
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US
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Polyurethane foams prepared from mixtures of polyether polyols
Assignee: Naphtachimie SA
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Filing: 1967-05-12
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Granted: 1970-12-08
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Expires: 1987-05-12
Abstract
No abstract record available.
Inventors
- 👤 Camille Granger
- 👤 Gerard Repiquet
- 👤 Michel Buisson
- 👤 Jean Dausque
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:54
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/4804; C08G2110/00; C08G2110/0041; C08G2110/005; C08G2110/0083; Y; Y10; Y10S; Y10S521/00; Y10S521/904
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3194773A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-07 | 1974-06-08 | 1974-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-07 | 1978-06-08 | 1978-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-07 | 1982-06-08 | 1982-12-08 | $7700.00 | Window Closed / Lapsed |