US3014819A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Formation of p-n junctions
Assignee: International Business Machines Corp
•
Filing: 1958-12-26
•
Granted: 1961-12-26
•
Expires: 1978-12-26
Abstract
No abstract record available.
Inventors
- 👤 Lloyd P Hunter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:25
CPC Classifications
H; H10; H10P; H10P50/00; C; C30; C30B; C30B9/00; H10D; H10D62/00; H10D62/01; H10P10/00; H10P10/12; H10P14/00; H10P14/20; H10P14/29; H10P14/2901; H10P14/2902; H10P14/2905; H10P14/34; H10P14/3402; H10P14/3404; H10P14/3411; H10P14/3438; H10P14/3441; H10P14/38; H10P14/3802; H10P32/00; H10P32/10; H10P32/12; H10P32/17; H10P32/171; H10P95/00; H10P95/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
A METHOD OF FORMING P-N JUNCTIONS IN SEMICONDUCTORS COMPRISING THE STEPS OF PLACING A POWDER OF ONE CONDUCTIVITY TYPE SEMICONDUCTOR MATERIAL ABUTTING A BODY OF THE SAME SEMICONDUCTOR MATERIAL OF THE OTHER CONDUCTIVITY TYPE IN A VACUUM AND HEATING THE POWDER TO THE MELTING POINT OF THE SEMICONDUCTOR MATERIAL.
Claim 2
Independent Claim
49 words
A METHOD OF FORMING P-N JUNCTIONS IN SEMICONDUCTORS COMPRISING THE STEPS OF PLACING A POWDER OF ONE CONDUCTIVITY TYPE SEMICONDUCTOR MATERIAL ABUTTING A BODY OF THE SAME SEMICONDUCTOR MATERIAL OF THE OTHER CONDUCTIVITY TYPE IN A VACUUM AND HEATING THE POWDER TO THE MELTING POINT OF THE SEMICONDUCTOR MATERIAL.
References Cited (Backward Citations)
US2631356A
Cited
US2708255A
Cited
US2701326A
Cited
US2708646A
Cited
US2859140A
Cited
US2644852A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-25 | 1965-06-26 | 1965-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-25 | 1969-06-26 | 1969-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-25 | 1973-06-26 | 1973-12-26 | $7700.00 | Window Closed / Lapsed |