US3646162A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoplastic resin blends of polysulfone and a graft derivative of a butadiene containing polymer spine
Assignee: Uniroyal Chemical Co Inc
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Filing: 1969-07-15
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Granted: 1972-02-29
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Expires: 1989-07-15
Abstract
Abstract BLENDS OF THERMOPLASTIC POLYSULFONE RESIN AND A GRAFT DERIVATIVE OF A BUTADINE CONTAINING POLYMER SPINE ARE CHARACTREIZED BY UNUSUALLY USEFGUL COMBINATION OF PROPERTIES, PARTICULARLY LOW TEMPERTURE MELT PROCESSABILITY IN COMBINATION WITH HIGH IMPACT STRENGTH AND FLEXURAL STRENGTH.
Inventors
- 👤 Robert L Lauchlan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:12
CPC Classifications
C; C08; C08L; C08L31/00; C08L31/06; C08F; C08F279/00; C08F279/02; C08L81/00; C08L81/06; Y; Y10; Y10S; Y10S525/00; Y10S525/906
Claims Analysis
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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) | 1975-02-28 | 1975-08-30 | 1976-02-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-28 | 1979-08-30 | 1980-02-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-28 | 1983-08-30 | 1984-02-29 | $7700.00 | Window Closed / Lapsed |