US3830889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of rendering styrene copolymer polyblends self-extinguishing
Assignee: Monsanto Co
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Filing: 1972-08-30
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Granted: 1974-08-20
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Expires: 1992-08-30
Abstract
Abstract THIS INVENTION RELATES TO A SELF-EXTINGUISHING STYRENE COPOLYMER POLYBLEND COMPOSITION AND METHOD FOR RENDERING STRENE COPOLYMER POLYBLENDS SELF-EXTINGUISHING. MORE PARTICULARLY, HIGH IMPACT STRENGTH POLYBLEND COMPOSITIONS OF STYRENE COPOLYMERS ARE RENDERED SELF-EXTINGUISHING BY BLENDING WITH A NOVEL GRAFTED CHLOROPRENE RUBBER PHASE, SAID COMPOSTIONS BUT HAVE EXCELLENT PHYSIGUISHING POLYBLEND COMPOSITIONS BUT HAVE EXCELLENT PHYSICAL AND ENGINEERING PROPERTIES.
Inventors
- 👤 G Deets
- 👤 P Jacobs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:14
CPC Classifications
C; C08; C08L; C08L25/00; C08L25/02; C08L25/04; C08L25/08; C08L25/12; C08F; C08F279/00; C08F279/02; C08L51/00; C08L51/04
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) | 1977-08-19 | 1978-02-18 | 1978-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-19 | 1982-02-18 | 1982-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-19 | 1986-02-18 | 1986-08-20 | $7700.00 | Window Closed / Lapsed |