US2910394A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of semi-conductor material for rectifiers
Assignee: International Standard Electric Corp
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Filing: 1958-03-12
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Granted: 1959-10-27
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Expires: 1978-03-12
Abstract
No abstract record available.
Inventors
- 👤 Scott Thomas Robertson
- 👤 Wilson Jack Mccreath
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:24
CPC Classifications
C; C30; C30B; C30B29/00; C30B29/02; C30B29/06; C01; C01B; C01B25/00; C01B25/06; C01B33/00; C01B33/02; C01B6/00; C01B6/06; C01B6/10; C23; C23C; C23C16/00; C23C16/22; C23C16/44; C30B25/00; C30B25/02; C30B29/08; H; H10; H10P; H10P14/00; H10P14/20; H10P14/24; H10P14/34; H10P14/3402; H10P14/3404; H10P14/3411; H10P14/3438; H10P14/3441; H10P14/3442; H10P14/3444; Y; Y10; Y10S; Y10S252/00; Y10S252/95; Y10S252/951; Y10S438/00; Y10S438/914; Y10S438/925
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
174 words
A PROCESS OF MANUFACTURE OF A COHERENT BODY OF SEMI-CONDUCTOR MATERIAL CONTAINING A PREDETERMINED MINOR AMOUNT OF A SIGNNIFICANT IMPURITY TO HAVE THE DESIRED CONDUCTIVITY OF A CHOSEN TYPE WHICH COMPRISES DIRECTING A GASEOUS STREAM CONTAINING A HYDRIDE OF A PRINCIPAL MATERIAL OF THE CLASS CONSISTING OF SILICON AND GERMANIUM AND A HYDRIDE OF A MINOR IMPURITY MATERIAL TAKEN FROM THE CLASS CONSISTING OF BORON, PHOSPHORUS, ARSENIC, ANTIMONY, AND BISMUTH, IN THE PROPORTIONS TO PROVIDE THE DESIRED CONDUCTIVITY OF THE CHOSEN TYPE, ON TO A SURFACE OF A SEED OF SEMI-CONDUCTOR MATERIAL LOCATED IN AN ENCLOSURE , HEATING THE SAID SURFACE TO A TEMPERATURE AT LEAST EQUAL TO A TEMPERATURE SUFFICIENT TO DECOMPOSE BOTH OF SAID HYDRIDES, AND ADJUSTING THE RATE OF FLOW OF SAID HYDRIDES AND THE PRESSURE IN SAID ENCLOSURE TO PROVIDE A MOLECULAR CONCENTRATION OF SAID HYDRIDES WHICH IS SUBSTANTIALLY LESS THAN THE MOLECULAR CONCENTRATION OF SAID HYDRIDES AT ATMOSPHERIC PRESSURE AND THE DECOMPOSITION TEMPERATURE, WHEREBY DECOMPOSITION OF SAID HYDRIDES SUBSTANTIALLY WHOLLY UPON SAID SURFACE IS ASSURED TO PRODUCE A COHERENT
Claim 2
Dependent Claim
174 words
A PROCESS OF MANUFACTURE OF A COHERENT BODY OF SEMI-CONDUCTOR MATERIAL CONTAINING A PREDETERMINED MINOR AMOUNT OF A SIGNNIFICANT IMPURITY TO HAVE THE DESIRED CONDUCTIVITY OF A CHOSEN TYPE WHICH COMPRISES DIRECTING A GASEOUS STREAM CONTAINING A HYDRIDE OF A PRINCIPAL MATERIAL OF THE CLASS CONSISTING OF SILICON AND GERMANIUM AND A HYDRIDE OF A MINOR IMPURITY MATERIAL TAKEN FROM THE CLASS CONSISTING OF BORON, PHOSPHORUS, ARSENIC, ANTIMONY, AND BISMUTH, IN THE PROPORTIONS TO PROVIDE THE DESIRED CONDUCTIVITY OF THE CHOSEN TYPE, ON TO A SURFACE OF A SEED OF SEMI-CONDUCTOR MATERIAL LOCATED IN AN ENCLOSURE , HEATING THE SAID SURFACE TO A TEMPERATURE AT LEAST EQUAL TO A TEMPERATURE SUFFICIENT TO DECOMPOSE BOTH OF SAID HYDRIDES, AND ADJUSTING THE RATE OF FLOW OF SAID HYDRIDES AND THE PRESSURE IN SAID ENCLOSURE TO PROVIDE A MOLECULAR CONCENTRATION OF SAID HYDRIDES WHICH IS SUBSTANTIALLY LESS THAN THE MOLECULAR CONCENTRATION OF SAID HYDRIDES AT ATMOSPHERIC PRESSURE AND THE DECOMPOSITION TEMPERATURE, WHEREBY DECOMPOSITION OF SAID HYDRIDES SUBSTANTIALLY WHOLLY UPON SAID SURFACE IS ASSURED TO PRODUCE A COHERENT
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-26 | 1963-04-27 | 1963-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-26 | 1967-04-27 | 1967-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-26 | 1971-04-27 | 1971-10-27 | $7700.00 | Window Closed / Lapsed |