US3145126A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making diffused junctions
Assignee: Clevite Corp
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Filing: 1961-01-10
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Granted: 1964-08-18
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Expires: 1981-01-10
Abstract
No abstract record available.
Inventors
- 👤 George F Hardy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:11
CPC Classifications
H; H10; H10P; H10P32/00; H10P32/10; H10P32/17; H10P32/171; H10P32/14; H10P32/1404; H10W; H10W74/00; H10W74/40; H10W74/43; Y; Y10; Y10S; Y10S148/00; Y10S148/043
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
IN A PROCESS OF PREPARING A DOUBLE DIFFUSED TRANSSITOR, THE PROCESS OF PREPARING A SLICE OF SEMICONDUCTOR MATERIAL AS THE OPERATIVE ELEMENT IN SAID TRANSISTOR WHICH COMPRISES THE STEPS OF DEPOSITING A FIRST IMPURITY OF A FIRST CONDUCTIVITY TYPE OVER BOTH SIDES OF SAID SLICE, OXIDIZING THE SURFACES OF SAID SIDES BY OXY-SILANE CRACKING, REMOVING THE OXIDE FROM ONE SIDE OF SAID SLICE, PAINTING SAID ONE SIDE OF SAID SLICE WITH A SECOND IMPURITY OF A SECOND CONDUCTIVITY TYPE OPPOSITE TO SAID FIRST CONDUCTIVITY
Claim 2
Dependent Claim
84 words
IN A PROCESS OF PREPARING A DOUBLE DIFFUSED TRANSSITOR, THE PROCESS OF PREPARING A SLICE OF SEMICONDUCTOR MATERIAL AS THE OPERATIVE ELEMENT IN SAID TRANSISTOR WHICH COMPRISES THE STEPS OF DEPOSITING A FIRST IMPURITY OF A FIRST CONDUCTIVITY TYPE OVER BOTH SIDES OF SAID SLICE, OXIDIZING THE SURFACES OF SAID SIDES BY OXY-SILANE CRACKING, REMOVING THE OXIDE FROM ONE SIDE OF SAID SLICE, PAINTING SAID ONE SIDE OF SAID SLICE WITH A SECOND IMPURITY OF A SECOND CONDUCTIVITY TYPE OPPOSITE TO SAID FIRST CONDUCTIVITY
References Cited (Backward Citations)
US2793145A
Cited
US2765385A
Cited
US2804405A
Cited
US2802760A
Cited
US2911539A
Cited
US3070466A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-18 | 1968-02-17 | 1968-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-18 | 1972-02-17 | 1972-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-18 | 1976-02-17 | 1976-08-18 | $7700.00 | Window Closed / Lapsed |