Patent US3794697A successfully refreshed from Google Patents.
US3794697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modified styrene polymers providing impact-resistant molded articles
Assignee: BASF SE
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Filing: 1972-01-26
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Granted: 1974-02-26
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Expires: 1992-01-26
Abstract
Abstract THERMOPLASTIC MOLDING COMPOSITIONS COMPRISIG A MIXTURE OF TWO RUBBER-MODIFIED STYRENE POLYMERS A AND B COMPONENT A CONSISTS OF CONVENTIONAL IMPACT-RESISTANT POLYSTYRENE MADE BY POLYMERIZING STYRENE IN THE PRESENCE OF A RUBBER COMPONENT B CONSISTS OF A GRAFT POLYMER MADE BY POLYMERIZING STYRENE IN THE PRESENCE OF A METALLIZED DIENE POLYMER. THE COMPOSITIONS HAVE PARTICULARLY HIGH IMPACT RESISTANCE AND ARE THEREFORE PREFERRED FOR THE MANUFACTURE OF UTILITY ARTICLES WHERE THIS PROPERTY IS DESIRABLE.
Inventors
- 👤 K Bronstert
- 👤 E Kastning
- 👤 M Kastning
- 👤 D Stein
- 👤 J Kurze
- 👤 V Ladenberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 04:57
CPC Classifications
C; C08; C08L; 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) | 1977-02-25 | 1977-08-27 | 1978-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-25 | 1981-08-27 | 1982-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-25 | 1985-08-27 | 1986-02-26 | $7700.00 | Window Closed / Lapsed |