US3212943A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of using protective coating over layer of lithium being diffused into substrate
Assignee: Associated Electrical Industries Ltd
•
Filing: 1962-10-01
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Granted: 1965-10-19
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Expires: 1982-10-01
Abstract
No abstract record available.
Inventors
- 👤 Freck David Vernon
- 👤 Wakefield James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:23
CPC Classifications
H; H10; H10P; H10P95/00; G; G01; G01T; G01T1/00; G01T1/16; G01T1/24; H10F; H10F30/00; H10F30/20; H10F30/29; H10F30/292; H10F30/2925
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A METHOD OF MANUFACTURING SOLID STATE P-I-N JUNCTION DEVICES CONSISTING IN THE STEPS OF FIRST DEPOSITING ONTO A P-TYPE SEMI-CONDUCTOR A THIN LAYER OF LITHIUM FROM A LITHIUM VAPOR AT ABOUT 700*C., DEPOSITING A PROTECTIVE COATING THEREON OF ALUMINUM TO PREVENT OXIDATION, HEATING THE SEMI-CONDUCTOR TO A TEMPERATURE OF ABOUT 200* C. TO ABOUT 400*C. TO CAUSED THE LITHIUM TO DIFFUSE AND TO FORM A P-N JUNCTION AND DEPLETION ZONE AND THEN APPLYING A REVERSE ELECTRICAL BIAS TO THE JUNCTION WHEN HEATED TO A LOWER TEMPERATURE OF APPROXIMATELY 70*C. TO INCREASE THE THICKNESS OF THE DEPLETION ZONE AND FORM A P-I-N JUNCTION.
Claim 2
Independent Claim
102 words
A METHOD OF MANUFACTURING SOLID STATE P-I-N JUNCTION DEVICES CONSISTING IN THE STEPS OF FIRST DEPOSITING ONTO A P-TYPE SEMI-CONDUCTOR A THIN LAYER OF LITHIUM FROM A LITHIUM VAPOR AT ABOUT 700*C., DEPOSITING A PROTECTIVE COATING THEREON OF ALUMINUM TO PREVENT OXIDATION, HEATING THE SEMI-CONDUCTOR TO A TEMPERATURE OF ABOUT 200* C. TO ABOUT 400*C. TO CAUSED THE LITHIUM TO DIFFUSE AND TO FORM A P-N JUNCTION AND DEPLETION ZONE AND THEN APPLYING A REVERSE ELECTRICAL BIAS TO THE JUNCTION WHEN HEATED TO A LOWER TEMPERATURE OF APPROXIMATELY 70*C. TO INCREASE THE THICKNESS OF THE DEPLETION ZONE AND FORM A P-I-N JUNCTION.
References Cited (Backward Citations)
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US3022568A
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US2991366A
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US2957789A
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US3044147A
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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) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |