US3641208A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transparent compositions of vinyl halide polymers and tertiary alkyl styrene - acrylonitrile - butadine rubber polymers and metho of making the same
Assignee: Dow Chemical Co
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Filing: 1969-11-17
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Granted: 1972-02-08
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Expires: 1989-11-17
Abstract
Abstract TRANSPARENT COMPOSITIONS OF MATTER COMPRISING FUSION BLENDS OF VINYL CHLORIDE POLYMERS AND RESINOUS COPOLYMERS OF A TERTIARY ALKYL STYRENE, ACRYLONITRILE AND A BUTADIENE POLYMER, E.G., POLYBUTADIENE.
Inventors
- 👤 Richard H Hall
- 👤 Carleton W Roberts
- 👤 Andrew J Sikkema
- 👤 Junior J Lamson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:34
CPC Classifications
C; C08; C08F; C08F279/00; C08F279/02; C08F279/04; C08L; C08L25/00; C08L25/02; C08L25/16; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08L55/00; C08L55/02
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) | 1975-02-07 | 1975-08-09 | 1976-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-07 | 1979-08-09 | 1980-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-07 | 1983-08-09 | 1984-02-08 | $7700.00 | Window Closed / Lapsed |