Patent US4156183A successfully refreshed from Google Patents.
Patent US3010855A successfully refreshed from Google Patents.
US3010855A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor device manufacturing
Assignee: International Business Machines Corp
•
Filing: 1958-08-27
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Granted: 1961-11-28
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Expires: 1978-08-27
Abstract
No abstract record available.
Inventors
- 👤 Barson Fred
- 👤 Genser Milton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:04
CPC Classifications
H; H10; H10D; H10D99/00; C; C30; C30B; C30B31/00; C30B31/04; C30B31/06; H10D1/00; H10D1/40; H10D48/00; H10D48/30; H10D48/38; H10P; H10P32/00; H10P32/10; H10P32/12; H10P32/17; H10P32/171; H10P95/00; H10P95/50; Y; Y10; Y10S; Y10S438/00; Y10S438/936; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12528
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
A PROCESS OF PROVIDING A RECTIFYING CONNECTION TO A BODY OF SEMICONDUCTOR MATERIAL COMPRISING THE STEPS OF PROVIDING A BODY OF SEMICONDUCTOR MATERIAL HAVING BOTH "DONOR" IMPURITIES AND "ACCEPTOR" IMPURITIES INCLUDED THEREIN IN A CONCENTRATION SUCH THAT THE DONOR IMPURITIES PREDOMINATE IN THE SEMICONDUCTOR BODY, PLACING A QUANTITY OF A SOLVENT METAL IN CONTACT WITH SAID BODY, SAID SOLVENT METAL HAVING A CONDUCTIVITY TYPE DETERMINING RELATIONSHIP WITH SAID DONOR AND ACCEPTOR IMPURITIES SO AS NOT TO RETARD A SUBSEQUENT OUT DIFFUSION OF SAID DONOR IMPURITY OUT OF SAID BODY, HEATING SAID BODY AND SAID SOLVENT METAL ON THE SURFACE OF SAID BODY TO FORM A MOLTEN POOL, MAINTAINING SAID BODY AND SAID MOLTEN POOL AT A TEMPERATURE AND FOR A TIME SUFFICIENT TO EFFECT A DIF-
Claim 2
Dependent Claim
126 words
A PROCESS OF PROVIDING A RECTIFYING CONNECTION TO A BODY OF SEMICONDUCTOR MATERIAL COMPRISING THE STEPS OF PROVIDING A BODY OF SEMICONDUCTOR MATERIAL HAVING BOTH "DONOR" IMPURITIES AND "ACCEPTOR" IMPURITIES INCLUDED THEREIN IN A CONCENTRATION SUCH THAT THE DONOR IMPURITIES PREDOMINATE IN THE SEMICONDUCTOR BODY, PLACING A QUANTITY OF A SOLVENT METAL IN CONTACT WITH SAID BODY, SAID SOLVENT METAL HAVING A CONDUCTIVITY TYPE DETERMINING RELATIONSHIP WITH SAID DONOR AND ACCEPTOR IMPURITIES SO AS NOT TO RETARD A SUBSEQUENT OUT DIFFUSION OF SAID DONOR IMPURITY OUT OF SAID BODY, HEATING SAID BODY AND SAID SOLVENT METAL ON THE SURFACE OF SAID BODY TO FORM A MOLTEN POOL, MAINTAINING SAID BODY AND SAID MOLTEN POOL AT A TEMPERATURE AND FOR A TIME SUFFICIENT TO EFFECT A DIF-
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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) | 1964-11-27 | 1965-05-29 | 1965-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-11-27 | 1969-05-29 | 1969-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-11-27 | 1973-05-29 | 1973-11-28 | $7700.00 | Window Closed / Lapsed |