Patent US5147588A successfully refreshed from Google Patents.
US5147588A
Expired / Lapsed
US
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Method of making carbon/carbon composite
Assignee: Akebono Brake Industry Co Ltd
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Filing: 1990-06-12
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Granted: 1992-09-15
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Expires: 2010-06-12
Abstract
Abstract A hybrid carbon/carbon composite and a method of manufacturing a hybrid carbon/carbon composite, wherein a raw material containing carbon fibers with two or more different lengths and meso-phase carbon as a binder are raw materials. The raw materials are kneaded in the presence of adhesives, dried and defibrated, then molded under heat and pressure by hot press, and thereafter subjected to heat treatment.
Inventors
- 👤 Akimitsu Okura
- 👤 Toushoku Chou
- 👤 Nobuo Kamioka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:17
CPC Classifications
F; F16; F16D; F16D69/00; F16D69/02; F16D69/023; C; C04; C04B; C04B35/00; C04B35/515; C04B35/52; C04B35/522; C04B35/71; C04B35/78; C04B35/80; C04B35/83; C04B2235/00; C04B2235/02; C04B2235/30; C04B2235/42; C04B2235/422; C04B2235/425; C04B2235/50; C04B2235/52; C04B2235/5208; C04B2235/526; C04B2235/5264; C04B2235/5272; C04B2235/5292; C04B2235/54; C04B2235/5418; C04B2235/5436; C04B2235/60; C04B2235/616; C04B2235/65; C04B2235/66; C04B2235/661; C04B2235/70; C04B2235/74; C04B2235/77; C04B2235/96
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
62 words
A method of manufacturing hybrid carbon/carbon composite, wherein a raw material containing carbon fibers with two or more different lengths within the range of 3 mm/6 mm to 3 mm/20 mm, and meso-phase carbon as a binder is kneaded in the presence of adhesives, dried and defibrated, then molded under heat and pressure by hot press, and thereafter subjected to heat treatment.
Claim 2
Independent Claim
62 words
A method of manufacturing hybrid carbon/carbon composite, wherein a raw material containing carbon fibers with two or more different lengths within the range of 3 mm/6 mm to 3 mm/20 mm, and meso-phase carbon as a binder is kneaded in the presence of adhesives, dried and defibrated, then molded under heat and pressure by hot press, and thereafter subjected to heat treatment.
Claim 3
Dependent Claim
52 words
The method of manufacturing hybrid carbon/carbon composite for friction materials according to claim 1, wherein after molding at a maximum pressure of 500 kg/cm 2 and at a maximum temperature of 600° C. by hot press, carbonization at 1100° to 1200° C. and then graphitization at 2000° to 2500° C. are performed.
Claim 4
Dependent Claim
37 words
The method of manufacturing hybrid carbon/carbon composite according to claim 1, wherein the carbon fibers with two or more different lengths comprise the combination of short fibers with long fibers possessing lengths between 1.0 and 50.0 mm.
Claim 5
Dependent Claim
25 words
A method of manufacturing hybrid carbon/carbon composite according to claim 1, wherein the mixing ratio of short fibers to long fibers is 1/8 to 1/2.
Claim 6
Dependent Claim
23 words
The method of manufacturing hybrid carbon/carbon composite according to claim 1, wherein the mixing ratio of short fibers to long fibers is 1/2.
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) | 1995-09-15 | 1996-03-16 | 1996-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-09-15 | 2000-03-16 | 2000-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-09-15 | 2004-03-16 | 2004-09-15 | $7700.00 | Window Closed / Lapsed |