US3768144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for ceramic composites
Assignee: American Lava Corp
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Filing: 1971-03-04
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Granted: 1973-10-30
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Expires: 1991-03-04
Abstract
Abstract A process is provided by which metal, or other non-ceramic material, is inset into a ceramic structure to produce a composite structure having properties not attainable by previously available processes.
Inventors
- 👤 B Heinss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:52
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/40; H05K3/4038; H05K3/4053; H05K3/4061; H05K1/00; H05K1/02; H05K1/03; H05K1/0306; H05K1/09; H05K1/092; H05K2203/00; H05K2203/01; H05K2203/0104; H05K2203/0108; H05K2203/03; H05K2203/033; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49833
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
18 words
Process according to claim 1 in which first and second green tapes are of substantially the same caliper.
Claim 2
Dependent Claim
43 words
preparing a second self-sustaining green tape of substantially uniform thickness consisting essentially of compositing material selected from the group of metallic and non-metallic refractory compositions in thermoplastic polymeric binder to about the same volume percentage of from about 70 to 90 percent and;
Claim 3
Dependent Claim
29 words
simultaneously punching predetermined areas from said second green sheet and said first green sheet so that each piece punched from said second sheet is lodged in said first sheet.
Claim 4
Dependent Claim
39 words
Process according to claim 1 in which the second green tape consists essentially of metal of the group of tungsten and molybdenum with up to about 30 percent by weight of the ceramic essentially constituting the first green tape.
Claim 5
Dependent Claim
22 words
Process according to claim 3 in which the first green tape contains alumina of at least 90 percent purity in polymeric binder.
Claim 6
Dependent Claim
23 words
Process according to claim 1 wherein the second green tape is an essentially non-metallic refractory of the group of ferrites, beryllia and titanates.
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) | 1976-10-29 | 1977-04-30 | 1977-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-29 | 1981-04-30 | 1981-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-29 | 1985-04-30 | 1985-10-30 | $7700.00 | Window Closed / Lapsed |