US2798013A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing junction-type semi-conductor devices, and apparatus therefor
Assignee: Siemens Schuckertwerke AG
•
Filing: 1956-07-19
•
Granted: 1957-07-02
•
Expires: 1976-07-19
Abstract
No abstract record available.
Inventors
- 👤 Irmler Horst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:32
CPC Classifications
H; H10; H10P; H10P95/00; C; C22; C22F; C22F3/00; C30; C30B; C30B31/00; C30B31/04; H10P95/50; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12528
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
IN A METHOD FOR THE MANUFACTURE OF JUNCTION-TYPE RECTIFIERS, TRANSISTORS, AND LIKE SEMICONDUCTOR DEVICES, WHEREIN A BODY OF ELECTRODE MATERIAL HAVING A PRE-FORMED SHAPE IS PLACED UPON A SEMICONDUCTOR BODY FOR THE PURPOSE OF FURNISHING THE SEMICONDUCTOR WITH A LARGE-AREA ELECTRODE, THE IMPROVEMENT COMPRISING CONTACTING A MARGINAL ZONE OF THE ELECTRODE MATERIAL BODY WITH AN AUXILIARY BODY, MELTING THE ELECTRODE-MATERIAL BODY TO ALLOY IT WITH THE SEMICONDUCTOR BODY, THE AUXILIARY BODY BEING IN SOLID PHASE AT THE MELTING-ALLOYING TEMPERATURE AND PROVIDING A SURFACE IN CONTACT WITH THE MOLTEN ELECTRODEMOLTEN ELECTRODE-MATERIAL WHICH IS COUNTER TO THE CON-NG TRACTILE SURFACE TENSION OF THE MOLTEN ELECTRODE-MATERIAL AND THEREBY SERVES TO ASSIST IN RETAINING THE SHAPE OF THE BODY OF ELECTRODE MATERIAL.
Claim 2
Dependent Claim
118 words
IN A METHOD FOR THE MANUFACTURE OF JUNCTION-TYPE RECTIFIERS, TRANSISTORS, AND LIKE SEMICONDUCTOR DEVICES, WHEREIN A BODY OF ELECTRODE MATERIAL HAVING A PRE-FORMED SHAPE IS PLACED UPON A SEMICONDUCTOR BODY FOR THE PURPOSE OF FURNISHING THE SEMICONDUCTOR WITH A LARGE-AREA ELECTRODE, THE IMPROVEMENT COMPRISING CONTACTING A MARGINAL ZONE OF THE ELECTRODE MATERIAL BODY WITH AN AUXILIARY BODY, MELTING THE ELECTRODE-MATERIAL BODY TO ALLOY IT WITH THE SEMICONDUCTOR BODY, THE AUXILIARY BODY BEING IN SOLID PHASE AT THE MELTING-ALLOYING TEMPERATURE AND PROVIDING A SURFACE IN CONTACT WITH THE MOLTEN ELECTRODEMOLTEN ELECTRODE-MATERIAL WHICH IS COUNTER TO THE CON-NG TRACTILE SURFACE TENSION OF THE MOLTEN ELECTRODE-MATERIAL AND THEREBY SERVES TO ASSIST IN RETAINING THE SHAPE OF THE BODY OF ELECTRODE MATERIAL.
References Cited (Backward Citations)
US2651009A
Cited
US2743693A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-01 | 1960-12-31 | 1961-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-01 | 1964-12-31 | 1965-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-01 | 1968-12-31 | 1969-07-02 | $7700.00 | Window Closed / Lapsed |