US4386168A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organic friction material
Assignee: Kureha Corp
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Filing: 1982-05-27
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Granted: 1983-05-31
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Expires: 2002-05-27
Abstract
Abstract Disclosed herein is an organic friction material comprising 5 to 25% by volume of metallic fiber, 3 to 40% by volume of activated carbon, 3 to 15% by volume of carbon fiber, 7 to 47% by volume of an organic or inorganic filling material and 10 to 30% by volume of phenolic resin.
Inventors
- 👤 Hiroto Fujimaki
- 👤 Shigetoshi Ajima
- 👤 Kazuhiro Watanabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:40
CPC Classifications
F; F16; F16D; F16D69/00; F16D69/02; F16D69/025; F16D69/026; C; C08; C08K; C08K3/00; C08K3/02; C08K3/04; C08K7/00; C08K7/02; C08K7/04; C08K7/06
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
50 words
An organic friction material comprising 5 to 25% by volume of metal fiber, 3 to 40% by volume of activated carbon, 3 to 15% by volume of carbon fiber, 7 to 47% by volume of an organic or inorganic filling material and 10 to 30% by volume of phenolic resin.
Claim 2
Dependent Claim
50 words
An organic friction material comprising 5 to 25% by volume of metal fiber, 3 to 40% by volume of activated carbon, 3 to 15% by volume of carbon fiber, 7 to 47% by volume of an organic or inorganic filling material and 10 to 30% by volume of phenolic resin.
Claim 3
Dependent Claim
19 words
An organic friction material according to claim 1, wherein said metal fiber is steel fiber or stainless steel fiber.
Claim 4
Dependent Claim
24 words
An organic friction material according to claim 1, wherein said activated carbon has a specific surface area of more than 200 m 2 /g.
Claim 5
Dependent Claim
39 words
An organic friction material according to claim 1, wherein said activated carbon has a specific surface area in a range of 500 to 2,000 m 2 /g and a particle diameter in the range of 50 to 1,000 microns.
Claim 6
Dependent Claim
34 words
An organic friction material according to claim 1, wherein said carbon fiber is longer than 0.1 mm in fiber average length and has an average diameter in the range of 5 to 50 microns.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-05-30 | 1986-11-29 | 1987-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-30 | 1990-11-29 | 1991-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-30 | 1994-11-29 | 1995-05-31 | $7700.00 | Window Closed / Lapsed |