US3607613A
Expired / Lapsed
US
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Electrically conductive refractory bodies
Assignee: GTE Sylvania Inc
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Filing: 1968-05-27
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Granted: 1971-09-21
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Expires: 1988-05-27
Abstract
Abstract A unitary electrically conductive refractory body is made by joining at least two such smaller bodies. A thin layer of refractory powder is first applied to the interface layer between the two bodies. Heat and pressure is then applied thereto to form the unitary body. The smaller bodies can be formed of an admixture of A1N, BN and TiB2 and the refractory powder can be a transition metal boride, carbide or nitride.
Inventors
- 👤 Edmund M Passmore
- 👤 Donald P Wilde
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:07
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/515; C04B35/58; C04B35/5805; C04B35/58064; C04B35/58071; C04B35/583; C04B35/622; C04B35/64; C04B35/645; C04B37/00; C04B37/003; C04B37/005; C23; C23C; C23C14/00; C23C14/22; C23C14/24; C23C14/243; H; H01; H01B; H01B1/00; C04B2235/00; C04B2235/02; C04B2235/50; C04B2235/54; C04B2235/5418; C04B2235/5436; C04B2237/00; C04B2237/02; C04B2237/04; C04B2237/08; C04B2237/083; C04B2237/30; C04B2237/32; C04B2237/36; C04B2237/361; C04B2237/366; C04B2237/50; C04B2237/52; C04B2237/70; C04B2237/708; Y; Y10; Y10T; Y10T428/00; Y10T428/26
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
21 words
The refractory body of claim 1 wherein said refractory bodies comprise an admixture of aluminum nitride, boron nitride and titanium boride.
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) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |