US2783197A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making broad area semiconductor devices
Assignee: General Electric Co
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Filing: 1952-01-25
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Granted: 1957-02-26
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Expires: 1972-01-25
Abstract
No abstract record available.
Inventors
- 👤 Robert J Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:04
CPC Classifications
H; H10; H10P; H10P95/00; C; C09; C09B; C09B5/00; C09B5/24; C09B5/2409; C09B5/2436; C09B5/2445; C09B5/2454; C09B5/2463; C09B5/2472; H10D; H10D99/00; H10P50/00; H10P50/60; H10P50/61; H10P50/613; H10P50/69; H10P50/691
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
THE METHOD OF REMOVING THE RECTIFICATION BARRIER SHORT CIRCUIT FROM THE P-N JUNCTION OF AN IMPURITY DIFFUSED SEMI-CONDUCTOR DEVICE INCLUDING AN IMPURITY CONTACT HAVING A SUBSTANTIALLY SMALLER SURFACE AREA THAN THE REMAINDER OF SAID SEMI-CONDUCTOR DEVICE WHICH COMPRISES IMMERSING THE DEVICE IN A WATER SOLUTION OF A HYDROXIDE SELECTED FROM THE GROUP CONSISTING OF SODIUM HYDROXIDE AND POTASSIUM HYDROXIDE IN SPACED RELATION TO AN IMMERSED ELECTRODE, APPLYING A DIRECT CURRENT VOLTAGE ACROSS
Claim 2
Independent Claim
72 words
THE METHOD OF REMOVING THE RECTIFICATION BARRIER SHORT CIRCUIT FROM THE P-N JUNCTION OF AN IMPURITY DIFFUSED SEMI-CONDUCTOR DEVICE INCLUDING AN IMPURITY CONTACT HAVING A SUBSTANTIALLY SMALLER SURFACE AREA THAN THE REMAINDER OF SAID SEMI-CONDUCTOR DEVICE WHICH COMPRISES IMMERSING THE DEVICE IN A WATER SOLUTION OF A HYDROXIDE SELECTED FROM THE GROUP CONSISTING OF SODIUM HYDROXIDE AND POTASSIUM HYDROXIDE IN SPACED RELATION TO AN IMMERSED ELECTRODE, APPLYING A DIRECT CURRENT VOLTAGE ACROSS
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) | 1960-02-26 | 1960-08-27 | 1961-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-26 | 1964-08-27 | 1965-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-26 | 1968-08-27 | 1969-02-26 | $7700.00 | Window Closed / Lapsed |