Patent US3769694A successfully refreshed from Google Patents.
US3769694A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ohmic contact for group iii-v p-type semiconductors
Assignee: General Electric Co
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Filing: 1972-04-18
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Granted: 1973-11-06
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Expires: 1992-04-18
Abstract
Abstract A combination of gold-germanium or gold-silicon alloy and zinc or other metallic Group II element provides an electrical contact and low-temperature bonding material for p-type semiconductors of Group III-V such as gallium arsenide.
Inventors
- 👤 N Collins
- 👤 I Halt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:09
CPC Classifications
H; H10; H10D; H10D64/00; H10D64/01; H10D64/011; H10D64/0116; H10W; H10W72/00; H10W72/30; H10W72/071; H10W72/073; H10W72/07331; H10W72/07336; H10W72/50; H10W72/531; H10W72/536; H10W72/5363; H10W72/851; H10W72/874; H10W72/884; H10W90/00; H10W90/701; H10W90/751; H10W90/753; H10W90/754; Y; Y10; Y10S; Y10S148/00; Y10S148/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
24 words
A method as claimed in claim 1, in which said metal header is gold plated at the region of contact with said p-type material.
Claim 2
Dependent Claim
33 words
A method as claimed in claim 1, in which said Group II metallic element is zinc, and in which said Group III-V p-type material is gallium arsenide, gallium phosphide, or gallium arsenide phosphide.
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) | 1976-11-05 | 1977-05-07 | 1977-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-05 | 1981-05-07 | 1981-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-05 | 1985-05-07 | 1985-11-06 | $7700.00 | Window Closed / Lapsed |