Patent US3633076A successfully refreshed from Google Patents.
US3633076A
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Three layer metallic contact strip at a semiconductor structural component
Assignee: Siemens AG
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Filing: 1967-03-20
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Granted: 1972-01-04
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Expires: 1987-03-20
Abstract
Abstract The method of applying a metallic contact strip to a semiconductor and the strip per se. The contact strip consists of three sequential layers of different metals stacked upon each other. The lowest layer, i.e., that adjacent the semiconductor, possesses a high affinity toward oxygen and is preferably selected from molybdenum, tungsten, vanadium and chromium. The middle layer is selected from iron, cobalt, nickel, manganese and chromium. The outer layer is a noble metal.
Inventors
- 👤 Heinz-Herbert Arndt
- 👤 Jurgen Schadel Dieter Muller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:29
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/06; C23C14/14; C23C14/18; H; H10; H10P; H10P95/00; H10W; H10W72/00; H10W72/30; H10W72/071; H10W72/073; H10W72/07331; H10W72/07336; H10W72/50; H10W72/551; H10W72/552; H10W72/5522; H10W72/59; H10W72/90; H10W72/951; H10W72/952
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
20 words
Metallic contact strip according to claim 1, wherein the thickness of the lower layer is less than 0.1 Mu .
Claim 2
Dependent Claim
17 words
The contact strip of claim 2, wherein the lower layer is between 0.01 and 0.05 Mu thick.
Claim 3
Dependent Claim
22 words
The metallic contact strip according to claim 3, wherein the lower metal layer bears upon semiconductor material which is doped to degeneracy.
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) | 1975-01-03 | 1975-07-05 | 1976-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-03 | 1979-07-05 | 1980-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-03 | 1983-07-05 | 1984-01-04 | $7700.00 | Window Closed / Lapsed |