US3138495A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor device and method of manufacture
Assignee: Texas Instruments Inc
•
Filing: 1961-07-28
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Granted: 1964-06-23
•
Expires: 1981-07-28
Abstract
No abstract record available.
Inventors
- 👤 Ernest G Bylander
- 👤 Walter R Runyan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:03
CPC Classifications
H; H10; H10P; H10P32/00; H10P32/10; H10P32/18; H10P32/17; H10P32/174; Y; Y10; Y10S; Y10S438/00; Y10S438/914; Y10S438/923
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A METHOD OF FABRICATING A SEMICONDUCTOR DEVICE COMPRISING THE STEPS OF PREPARING A WAFER OF N-TYPE INDIUM ANTIMONIDE HAVING A THIN COATING OF INDIUM OXIDE ON ONE SURFACE THEREOF, EVAPORATING A COPPER COATING ON SAID SURFACE OVER SAID OXIDE COATING TO A THICKNESS OF LESS THAN ONE MICRON, HEATING SAID WAFER FOR A PERIOD OF AT LEAST 5 MINUTES AT A TEMPERATURE OF 360*C. TO 400* C. TO FORM A THIN DIFFUSED P-TYPE REGION ADJACENT SAID SURFACE, AND APPLYING ELECTRICALCONTACTS TO SAID REGION AND TO SAID WAFER.
Claim 2
Independent Claim
87 words
A METHOD OF FABRICATING A SEMICONDUCTOR DEVICE COMPRISING THE STEPS OF PREPARING A WAFER OF N-TYPE INDIUM ANTIMONIDE HAVING A THIN COATING OF INDIUM OXIDE ON ONE SURFACE THEREOF, EVAPORATING A COPPER COATING ON SAID SURFACE OVER SAID OXIDE COATING TO A THICKNESS OF LESS THAN ONE MICRON, HEATING SAID WAFER FOR A PERIOD OF AT LEAST 5 MINUTES AT A TEMPERATURE OF 360*C. TO 400* C. TO FORM A THIN DIFFUSED P-TYPE REGION ADJACENT SAID SURFACE, AND APPLYING ELECTRICALCONTACTS TO SAID REGION AND TO SAID WAFER.
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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) | 1967-06-23 | 1967-12-23 | 1968-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-23 | 1971-12-23 | 1972-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-23 | 1975-12-23 | 1976-06-23 | $7700.00 | Window Closed / Lapsed |