Patent US3546143A successfully refreshed from Google Patents.
US3546143A
Expired / Lapsed
US
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Production of a foamed product from a blend of thermoplastic polymer and cellulose fibers
Assignee: Millennium Petrochemicals Inc
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Filing: 1966-10-31
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Granted: 1970-12-08
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Expires: 1986-10-31
Abstract
No abstract record available.
Inventors
- 👤 Herbert O Corbett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:20
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0085; C08J9/04; C08J9/12; C08J9/125; C08K; C08K7/00; C08K7/02; C08L; C08L1/00; C08L57/00; C08L87/00; C08L97/00; C08L97/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2033411A
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US2319182A
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US2519442A
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US2911382A
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US3023136A
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US3309439A
Cited
US3367891A
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 |