US3129119A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of p.n. junctions in semiconductor material
Assignee: Associated Electrical Industries Ltd
•
Filing: 1960-04-15
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Granted: 1964-04-14
•
Expires: 1980-04-15
Abstract
No abstract record available.
Inventors
- 👤 Rouse Robert Lindsay
- 👤 Wakefield James
- 👤 Willis John Bernard
- 👤 Bullough Ronald
- 👤 Newman Ronald Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:01
CPC Classifications
H; H10; H10D; H10D10/00; C; C30; C30B; C30B15/00; C30B15/36; C30B31/00; C30B31/02; H10D1/00; H10D1/40; H10D48/00; H10D48/30; H10D48/38; H10D62/00; H10D62/10; H10D62/60; H10D62/80; H10D62/83; H10D62/834; H10P; H10P10/00; H10P32/00; H10P36/00; H10P95/00; Y; Y10; Y10S; Y10S148/00; Y10S148/003; Y10S148/033; Y10S148/049; Y10S148/051; Y10S148/115; Y10S148/122; Y10S148/151; Y10S438/00; Y10S438/914; Y10S438/922
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
THE PROCESS OF PRODUCING A P-N JUNCTION OF EXTENDED AREA WHICH CONSISTS IN HEATING A BODY OF MONOCRYSTAL SEMICONDUCTOR MATERIAL CONTAINING OXYGEN TOGETHER WITH IMPURITY ACTIVATORS OF OPPOSITE CONDUCTIVITY TYPES IN HOMOGENEOUS CONCENTRATION, THE ACTIVATOR CONCENTRATION OF ONE CONDUCTIVITY TYPE BEING INITIALLY PREDOMINANT, SAID BODY HAVING AN INTERNAL PLANAR CRYSTAL BOUNDARY, SO AS TO PRODUCE CONTROLLED DIFFUSION TO, AND PRECIPITATION WITH SAID OXYGEN AT, THE CRYSTAL BOUNDARY, OF AT LEAST ONE OF SAID INITIALLY PREDOMINANT ACTIVATORS, WHEREBY TO DEPLETE THE REGION IN THE IMMEDIATE NEIGHBOURHOOD OF THE BOUNDARY OF SAID ONE TYPE OF INITIALLY PREDOMINANT ACTIVATOR AND THEREBY TO FORM AN ADJACENT REGION OF OPPOSITE CONDUCTIVITY TYPE TO THAT OF THE BODY.
Claim 2
Dependent Claim
112 words
THE PROCESS OF PRODUCING A P-N JUNCTION OF EXTENDED AREA WHICH CONSISTS IN HEATING A BODY OF MONOCRYSTAL SEMICONDUCTOR MATERIAL CONTAINING OXYGEN TOGETHER WITH IMPURITY ACTIVATORS OF OPPOSITE CONDUCTIVITY TYPES IN HOMOGENEOUS CONCENTRATION, THE ACTIVATOR CONCENTRATION OF ONE CONDUCTIVITY TYPE BEING INITIALLY PREDOMINANT, SAID BODY HAVING AN INTERNAL PLANAR CRYSTAL BOUNDARY, SO AS TO PRODUCE CONTROLLED DIFFUSION TO, AND PRECIPITATION WITH SAID OXYGEN AT, THE CRYSTAL BOUNDARY, OF AT LEAST ONE OF SAID INITIALLY PREDOMINANT ACTIVATORS, WHEREBY TO DEPLETE THE REGION IN THE IMMEDIATE NEIGHBOURHOOD OF THE BOUNDARY OF SAID ONE TYPE OF INITIALLY PREDOMINANT ACTIVATOR AND THEREBY TO FORM AN ADJACENT REGION OF OPPOSITE CONDUCTIVITY TYPE TO THAT OF THE BODY.
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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) | 1967-04-14 | 1967-10-14 | 1968-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-14 | 1971-10-14 | 1972-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-14 | 1975-10-14 | 1976-04-14 | $7700.00 | Window Closed / Lapsed |