US2887416A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of alloying an electrode to a germanium semi-conductive body
Assignee: US Philips Corp
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Filing: 1956-07-20
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Granted: 1959-05-19
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Expires: 1976-07-20
Abstract
No abstract record available.
Inventors
- 👤 Johannes Jacobus Asuerus P Ams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:52
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/50; F16L37/52; H; H10; H10P; H10P95/00; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12528; Y10T428/12674
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
A METHOD OF ALLOYING AN ELECTRODE TO A GERMANIUM SEMI-CONDUCTIVE BODY, WHICH COMPRISES PLACING AN ELECTRODE-FORMING MATERIAL IN ENGAGEMENT WITH SAID GERMANIUM BODY, PREHEATING SAID BODY AND ELECTRODE-FORMING MATERIAL IN THE PRESENCE OF A GASEOUS OR LIQUID FLUX AND AT A FIRST TEMPERATURE BELOW 450*C. AND FOR A PREDETERMINED TIME INTERVAL AT WHICH THE ELECTRODE-FORMING MATERIAL FUSES AND ADHERES TO BUT DOES NOT SUBSTANTIALLY PENETRATE THE GERMANIUM BODY THEREBY TO DEFINE THE ALLOYING AREA, THEREAFTER REHEATING THE BODY AND MATERIAL AT A SECOND TEMPERATURE ABOVE 350*C. AND ABOVE THE FIRST TEMPERATURE AND AT WHICH THE SAID MATERIAL SUBSTANTIALLY PENETRATES THE GERMANIUM BODY TO THE REQUIRED DEGREE, SAID FLUX BEING CONSTITUTED OF A READILY-VOLATILIZABLE HALOGEN-ION-DONATING MATERIAL HAVING A VAPOR PRESSURE AT SAID SECOND TEMPERATURE OF AT LEAST 10 MMS. OF HG AND REACTING WITH SAID BODY AND MATERIAL TO PRODUCE ONLY READILY-VOLATILIZABLE RESIDUES, WHEREBY DETRIMENTAL RESIDUES OF SAID FLUX ON THE GERMANIUM BODY ARE AVOIDED.
Claim 2
Independent Claim
154 words
A METHOD OF ALLOYING AN ELECTRODE TO A GERMANIUM SEMI-CONDUCTIVE BODY, WHICH COMPRISES PLACING AN ELECTRODE-FORMING MATERIAL IN ENGAGEMENT WITH SAID GERMANIUM BODY, PREHEATING SAID BODY AND ELECTRODE-FORMING MATERIAL IN THE PRESENCE OF A GASEOUS OR LIQUID FLUX AND AT A FIRST TEMPERATURE BELOW 450*C. AND FOR A PREDETERMINED TIME INTERVAL AT WHICH THE ELECTRODE-FORMING MATERIAL FUSES AND ADHERES TO BUT DOES NOT SUBSTANTIALLY PENETRATE THE GERMANIUM BODY THEREBY TO DEFINE THE ALLOYING AREA, THEREAFTER REHEATING THE BODY AND MATERIAL AT A SECOND TEMPERATURE ABOVE 350*C. AND ABOVE THE FIRST TEMPERATURE AND AT WHICH THE SAID MATERIAL SUBSTANTIALLY PENETRATES THE GERMANIUM BODY TO THE REQUIRED DEGREE, SAID FLUX BEING CONSTITUTED OF A READILY-VOLATILIZABLE HALOGEN-ION-DONATING MATERIAL HAVING A VAPOR PRESSURE AT SAID SECOND TEMPERATURE OF AT LEAST 10 MMS. OF HG AND REACTING WITH SAID BODY AND MATERIAL TO PRODUCE ONLY READILY-VOLATILIZABLE RESIDUES, WHEREBY DETRIMENTAL RESIDUES OF SAID FLUX ON THE GERMANIUM BODY ARE AVOIDED.
References Cited (Backward Citations)
US2807561A
Cited
US2761800A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-18 | 1962-11-17 | 1963-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-18 | 1966-11-17 | 1967-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-18 | 1970-11-17 | 1971-05-19 | $7700.00 | Window Closed / Lapsed |