Patent US3562092A successfully refreshed from Google Patents.
US3562092A
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Vibration damped sandwich systems
Assignee: Hoechst AG
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Filing: 1968-11-18
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Granted: 1971-02-09
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Expires: 1988-11-18
Abstract
Abstract A VIBRATION DAMPED SANDWICH SYSTEM COMPRISING TWO HARD PLATES AND INTERPOSED BETWEEN THE PLATES A VIBRATION DAMPING INTERLAYER COMPRISING GRAFT POLYMERS OF STYREN OR OPTIONALLY STYRENE WITH SMALL AMOUNTS OF A COPOLYM ERIZABLE CARBOXYLIC ACID, ESPECIALLY ACRYLIC AND/OR METH ACRYLIC ACID, ON A COPOLYMER OF 30 TO 40% BY WEIGHT OF VINYL ACETATE, 30-40% BY WEIGHT OF N-BUTYL ACRYLATE, 30 TO 10% BY WEIGHT OF DIBUTYL MALEATE AND ABOUT 10% BY WEIGHT OF CROTONIC ACID. D R A W I N G
Inventors
- 👤 Hermann Oberst
- 👤 Joachim Ebigt
- 👤 Gunther Duve
- 👤 Alfred Schommer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:30
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/82; E04B1/84; E04B1/86; C; C08; C08F; C08F291/00; E04B2001/742; E04B2001/743; E04B2001/8457; E04B2001/8476; Y; Y02; Y02A; Y02A30/00; Y02A30/24; Y02A30/244; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31699
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) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |