US4861804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compound type silicone gel material
Assignee: Cubic Engineering KK
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Filing: 1987-08-17
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Granted: 1989-08-29
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Expires: 2007-08-17
Abstract
Abstract A compound type silicone gel material which uses silicone gel having a penetration of 50 to 200 as basic material and contains a number of fine hollow cells.
Inventors
- 👤 Motoyasu Nakanishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:10
CPC Classifications
C; C08; C08L; C08L83/00; C08L83/04; C08K; C08K7/00; C08K7/22; C08G; C08G77/00; C08G77/04; C08G77/12; C08G77/20; C08G77/42; C08G77/44; C08G77/70
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
70 words
A silicone gel composition useful as a shock absorbing material or as a sound and vibration-proof material consisting essentially of a blend of a silicone gel having a penetration of 50-200 as measured by JIS K 2530-1976, 50 g load, and fine hollow microspheres formed of a synthetic resin and each having an elastic shell, the content of said hollow microspheres in the silicone gel material being 1-4% by weight.
Claim 2
Dependent Claim
70 words
A silicone gel composition useful as a shock absorbing material or as a sound and vibration-proof material consisting essentially of a blend of a silicone gel having a penetration of 50-200 as measured by JIS K 2530-1976, 50 g load, and fine hollow microspheres formed of a synthetic resin and each having an elastic shell, the content of said hollow microspheres in the silicone gel material being 1-4% by weight.
Claim 3
Dependent Claim
69 words
A silicone gel composition useful as a shock absorbing material or as a sound and vibration-proof material consisting essentially of a blend of a silicone gel having a penetration of 50-200 as measured by JIS K 2530-1976, 50 g load, and fine hollow inorganic microspheres, the content of said hollow microspheres in the silicone gel material being greater than 25% by weight but not greater than 50% by weight.
Claim 4
Dependent Claim
69 words
A silicone gel composition useful as a shock absorbing material or as a sound and vibration-proof material consisting essentially of a blend of a silicone gel having a penetration of 50-200 as measured by JIS K 2530-1976, 50 g load, and fine hollow inorganic microspheres, the content of said hollow microspheres in the silicone gel material being greater than 25% by weight but not greater than 50% by weight.
Claim 5
Dependent Claim
18 words
A silicone gel composition according to claim 2, wherein said fine hollow microspheres are formed of an aluminosilicate.
Claim 6
Dependent Claim
13 words
a shock absorbing material made of the silicone gel composition of claim 1.
Claim 7
Dependent Claim
15 words
A sound and vibration proof material made of the silicone gel composition of claim 3.
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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) | 1992-08-28 | 1993-02-27 | 1993-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-08-28 | 1997-02-27 | 1997-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-08-28 | 2001-02-27 | 2001-08-29 | $7700.00 | Window Closed / Lapsed |