Patent US3554855A successfully refreshed from Google Patents.
US3554855A
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Vibration damped sandwich systems having interlayers of a mixture of two externally plasticized copolymers capable of being cross-linked
Assignee: Hoechst AG
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Filing: 1967-11-21
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Granted: 1971-01-12
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Expires: 1987-11-21
Abstract
Abstract A VIBRATION DAMPED SANDWICH SYSTEM COMPRISING HARD PLATES AND A VIBRATION DAMPING, SELF-ADHERENT INTERLAYER CONSISTING OF A MXTURE OF (A) A MIXTURE OF A COPOLYMER I OF VINYL ACETATE AND DIBUTYL MALEATE AND A COPOLYMER II OF VINYL ACETATE AND CROTONIC ACID, (B) AT LEAST ONE PLASTI CIZER AND (C) A BIFUNCTIONAL EPOXIDE SOFT RESIN, WHICH INTERLAYER IS SUBJECTED TO A THERMAL TREATMENT TO BRING ABOUT CROSS-LINKING. VIBRATION DAMPED SANDWICH SYSTEMS HAVING INTERLAYERS OF A MIXTURE OF TWO EXTERNALLY PLAXTICIZED COPOLYMERS CAPABLE OF BEING CROSS-LINKED
Inventors
- 👤 Hermann Oberst
- 👤 Joachim Ebigt
- 👤 Gunther Duve
- 👤 Alfred Schommer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:29
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/04; B32B15/08; C; C08; C08L; C08L31/00; C08L31/02; C08L31/04; C08L63/00; Y; Y10; Y10S; Y10S260/00; Y10S260/46; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/31504; Y10T428/31511; Y10T428/31515; Y10T428/31522; Y10T428/31678; Y10T428/31692; Y10T428/31699
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |