US4287263A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat bondable asphaltic sound deadener
Assignee: GAF Corp
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Filing: 1979-08-15
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Granted: 1981-09-01
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Expires: 1999-08-15
Abstract
Abstract This invention pertains to asphaltic sheet sound deadener for use as a vibration damping medium, which can be bonded in place without excessive sag or flow by subjecting the material to 250°-400° F. The main use of this material is in the automotive field, but may be used in other areas such as the appliance and furniture industries. The melt flow properties of the deadener are controlled by the use of ground mica.
Inventors
- 👤 William J. Woodring
- 👤 James A. Gulino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:44
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/18; C08K3/24; C08K3/26; B; B32; B32B; B32B11/00; B32B11/02; C08K3/34; Y; Y10; Y10S; Y10S106/00; Y10S106/03; Y10T; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24322; Y10T428/24331; Y10T428/25; Y10T428/251; Y10T428/31504; Y10T428/31678; Y10T428/31717; Y10T428/31815; Y10T428/31855; Y10T428/31938
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
39 words
An automobile heat contouring sound-deadening material made solely of 30% asphalt, 20% mica and 50% limestone composition secured by the composition to the automobile and having on at least one side of said composition a heat deteriorating polyethylene film.
Claim 2
Dependent Claim
39 words
An automobile heat contouring sound-deadening material made solely of 30% asphalt, 20% mica and 50% limestone composition secured by the composition to the automobile and having on at least one side of said composition a heat deteriorating polyethylene film.
References Cited (Backward Citations)
CA721237A
Cited
CA784029A
Cited
US2009811A
Cited
GB1039711A
Cited
GB1002415A
Cited
GB1221950A
Cited
GB1221949A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-08-31 | 1985-03-02 | 1985-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-31 | 1989-03-02 | 1989-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-31 | 1993-03-02 | 1993-09-01 | $7700.00 | Window Closed / Lapsed |