US3644593A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compositions of matter comprising oxybenzoyl polyesters and polyfluorinated addition polymers
Assignee: Unifrax I LLC
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Filing: 1969-05-28
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Granted: 1972-02-22
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Expires: 1989-05-28
Abstract
Abstract A COMPOSITION OF MATTER COMPRISING: (A) AN OXYBENZOYL POLYESTER AND (B) A POLYFLUROINATED ADDITION POLYMER WHICH IS THERMALLY STABLE AT AT LEAST 400*F.
Inventors
- 👤 Bernard E Nowak
- 👤 Steve G Cottis
- 👤 James Economy
- 👤 Paul J Steiner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:21
CPC Classifications
C; C08; C08L; C08L27/00; C08L27/02; C08L27/12; C08L67/00; C08L67/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-02-21 | 1975-08-23 | 1976-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-21 | 1979-08-23 | 1980-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-21 | 1983-08-23 | 1984-02-22 | $7700.00 | Window Closed / Lapsed |