US3902861A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite material
Assignee: Battelle Memorial Institute Inc
•
Filing: 1973-08-14
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Granted: 1975-09-02
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Expires: 1993-08-14
Abstract
Abstract Composite material comprising a major portion by volume preferably between 55 and 80 volume percent - of spherical cellular carbon bodies homogeneously embedded in a metal matrix, e.g., aluminum, copper and cast iron.
Inventors
- 👤 Jacques Gillot
- 👤 Marcel Nussbaum
- 👤 Stuart Exelle
- 👤 Benno Lux
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:15
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/515; C04B35/52; C04B35/524
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
27 words
A COMPOSITE MATERIAL COMPRISING A MAJOR PORTION BY VOLUME OF SPHERICAL CELLULAR CARBON BODIES CONSISTING OF A CARBONIZED THERMOSETTING RESIN FOAM HOMOGENEOUSLY EMBEDDED IN A MATAL MATRIX.
Claim 2
Dependent Claim
27 words
A COMPOSITE MATERIAL COMPRISING A MAJOR PORTION BY VOLUME OF SPHERICAL CELLULAR CARBON BODIES CONSISTING OF A CARBONIZED THERMOSETTING RESIN FOAM HOMOGENEOUSLY EMBEDDED IN A MATAL MATRIX.
Claim 3
Dependent Claim
23 words
A composite material as claimed in claim 1, wherein the diameter of the spherical cellular carbon bodies is from 0.1 to 50 mm.
Claim 4
Dependent Claim
15 words
A composite material as claimed in claim 1, wherein the metal is a light metal.
Claim 5
Dependent Claim
14 words
A composite material as claimed in claim 3, wherein said light metal is aluminum.
Claim 6
Dependent Claim
13 words
A composite material as claimed in claim 1, wherein the metal is copper.
Claim 7
Dependent Claim
14 words
A composite material as claimed in claim 1, wherein the metal is cast iron.
References Cited (Backward Citations)
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US3342555A
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US3224846A
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Cited
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Cited
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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) | 1978-09-01 | 1979-03-03 | 1979-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-01 | 1983-03-03 | 1983-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-01 | 1987-03-03 | 1987-09-02 | $7700.00 | Window Closed / Lapsed |