US4532182A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silicon carbide whisker sheet composites
Assignee: Advanced Composite Materials Corp
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Filing: 1981-12-29
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Granted: 1985-07-30
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Expires: 2001-12-29
Abstract
Abstract A sheet comprising a uniformly dispersed coating of silicon carbide whiskers is produced by: (a) deagglomerating a whisker mass; (b) forming a slurry of deagglomerated whiskers; (c) coating the slurry upon a clean surface of the sheet; and (d) driving off the solvent of the slurry.
Inventors
- 👤 Lewis A. Short
- 👤 Ottis J. Horne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:09
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/622; C04B35/62222; C03; C03C; C03C17/00; C03C17/22; C04B30/00; C04B30/02; C04B35/515; C04B35/56; C04B35/565; C23; C23C; C23C24/00; C23C24/08; C23C26/00; C04B2235/00; C04B2235/02; C04B2235/30; C04B2235/38; C04B2235/3817; C04B2235/3826; C04B2235/50; C04B2235/52; C04B2235/5276; Y; Y10; Y10S; Y10S428/00; Y10S428/902; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2918; Y10T428/292; Y10T428/31504
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
65 words
A composite sheet comprising a planar sheet substrate of metal, glass, plastic or ceramic coated with interspersed silicon carbide whiskers on at least one surface thereof, said silicon carbide whiskers having previously been deagglomerated in a polar slurry and being substantially uniformly dispersed upon said surface of said substrate and adherent to said surface by static or molecular attraction without the presence of any binder.
Claim 2
Dependent Claim
65 words
A composite sheet comprising a planar sheet substrate of metal, glass, plastic or ceramic coated with interspersed silicon carbide whiskers on at least one surface thereof, said silicon carbide whiskers having previously been deagglomerated in a polar slurry and being substantially uniformly dispersed upon said surface of said substrate and adherent to said surface by static or molecular attraction without the presence of any binder.
Claim 3
Dependent Claim
13 words
A composite sheet as in claim 1 wherein said substrate is a metal.
Claim 4
Dependent Claim
17 words
A composite sheet as in claim 2 wherein said metal is aluminum, magnesium or an alloy thereof.
Claim 5
Dependent Claim
45 words
A metallic sheet having a substantially uniform dispersion of interspersed silicon whiskers on at least one surface thereof, said whiskers having previously been deagglomerated in a polar slurry and being adherent to said sheet by static or molecular attraction without the presence of any binder.
Claim 6
Dependent Claim
45 words
A metallic sheet having a substantially uniform dispersion of interspersed silicon whiskers on at least one surface thereof, said whiskers having previously been deagglomerated in a polar slurry and being adherent to said sheet by static or molecular attraction without the presence of any binder.
Claim 7
Dependent Claim
20 words
A metallic sheet as in claim 4 wherein the metal of said sheet is aluminum, magnesium or an alloy thereof.
Claim 8
Dependent Claim
85 words
A composite sheet comprising a planar sheet substrate of metal, glass, plastic or ceramic having a substantially uniform distribution of interspersed silicon carbide whiskers dispersed upon at least one surface thereof and adherent to said surface by static or molecular attraction without the presence of any binder, said whiskers derived from the process of: (a) deagglomerating said silicon carbide whiskers; (b) preparing a slurry of said deagglomerated whiskers; (c) coating at least one surface of said substrate with said slurry; and (d) drying said coating.
Claim 9
Dependent Claim
85 words
A composite sheet comprising a planar sheet substrate of metal, glass, plastic or ceramic having a substantially uniform distribution of interspersed silicon carbide whiskers dispersed upon at least one surface thereof and adherent to said surface by static or molecular attraction without the presence of any binder, said whiskers derived from the process of: (a) deagglomerating said silicon carbide whiskers; (b) preparing a slurry of said deagglomerated whiskers; (c) coating at least one surface of said substrate with said slurry; and (d) drying said coating.
Claim 10
Dependent Claim
12 words
The sheet of claim 6, wherein said sheet comprises a plastic material.
Claim 11
Dependent Claim
12 words
The sheet of claim 6, wherein said sheet comprises a ceramic material.
Claim 12
Dependent Claim
13 words
A composite sheet as in claim 6 wherein said substrate is a metal.
Claim 13
Dependent Claim
17 words
A composite sheet as in claim 9 wherein said metal is aluminum, magnesium or an alloy thereof.
References Cited (Backward Citations)
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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) | 1988-07-29 | 1989-01-28 | 1989-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-29 | 1993-01-28 | 1993-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-29 | 1997-01-28 | 1997-07-30 | $7700.00 | Window Closed / Lapsed |