Patent US1630987A successfully refreshed from Google Patents.
Patent US3230609A successfully refreshed from Google Patents.
US3230609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of providing alloy contacts on semi-conductor bodies
Assignee: US Philips Corp
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Filing: 1962-01-30
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Granted: 1966-01-25
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Expires: 1982-01-30
Abstract
No abstract record available.
Inventors
- 👤 Kooi Else
- 👤 Schmitz Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:50
CPC Classifications
H; H10; H10P; H10P95/00; C; C30; C30B; C30B31/00; C30B31/04; H10P95/50; Y; Y10; Y10S; Y10S228/00; Y10S228/903
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
A METHOD OF MAKING A SEMI-CONDUCTOR DEVICE BY ALLOYING, COMPRISING THE STEPS OF PROVIDING A SEMI-CONDUCTIVE BODY AND A MASS OF ALLOYING ELECTRODE MATERIAL, PROVIDING IN THE VICINITY OF THE ELECTRODE MASS AND SEMICONDUCTIVE BODY BUT SEPARATE THEREFROM A SUPLY OF A FLUX CONTAINING AT LEAST AN ALKALI METAL HALIDE, HEATING THE SEMICONDUCTIVE BODY AND ELECTRODE MASS AT A TEMPERATURE EXCEEDING 500*C. TO MELT THE MASS AND CONTACTING THE SEMICONDUCTIVE BODY WITH THE MELTED MASS WHILE SIMULTANEOUSLY HEATING THE FLUX SUPPLY TO VAPORIZE THE ALKALI METAL HALIDE AND PROVIDE VAPORS THEREOF AT THE CONTACTED MASS AND BODY TO PROMOTE MELTING AND FUSION AND ALLOWING THEREOF, SAID ALKALI METAL HALIDE BEING SUBSTANTIALLY INVOLATILE AT TEMPERATURES BELOW 500*C. AND REMAINING STABLE AT THE ELEVATED TEMPERATURE AT WHICH ALLOYING OCCURS, AND COOLING THE ASSEMBLY TO FORM AN ELECTRODE MASS ALLOYED TO THE SEMICONDUCTIVE BODY.
Claim 2
Independent Claim
141 words
A METHOD OF MAKING A SEMI-CONDUCTOR DEVICE BY ALLOYING, COMPRISING THE STEPS OF PROVIDING A SEMI-CONDUCTIVE BODY AND A MASS OF ALLOYING ELECTRODE MATERIAL, PROVIDING IN THE VICINITY OF THE ELECTRODE MASS AND SEMICONDUCTIVE BODY BUT SEPARATE THEREFROM A SUPLY OF A FLUX CONTAINING AT LEAST AN ALKALI METAL HALIDE, HEATING THE SEMICONDUCTIVE BODY AND ELECTRODE MASS AT A TEMPERATURE EXCEEDING 500*C. TO MELT THE MASS AND CONTACTING THE SEMICONDUCTIVE BODY WITH THE MELTED MASS WHILE SIMULTANEOUSLY HEATING THE FLUX SUPPLY TO VAPORIZE THE ALKALI METAL HALIDE AND PROVIDE VAPORS THEREOF AT THE CONTACTED MASS AND BODY TO PROMOTE MELTING AND FUSION AND ALLOWING THEREOF, SAID ALKALI METAL HALIDE BEING SUBSTANTIALLY INVOLATILE AT TEMPERATURES BELOW 500*C. AND REMAINING STABLE AT THE ELEVATED TEMPERATURE AT WHICH ALLOYING OCCURS, AND COOLING THE ASSEMBLY TO FORM AN ELECTRODE MASS ALLOYED TO THE SEMICONDUCTIVE BODY.
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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) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |