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US3205102A
Expired / Lapsed
US
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Method of diffusion
Assignee: Raytheon Co
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Filing: 1963-09-16
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Granted: 1965-09-07
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Expires: 1983-09-16
Abstract
No abstract record available.
Inventors
- 👤 James O Mccaldin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:21
CPC Classifications
C; C30; C30B; C30B31/00; C30B31/06; C30B31/14; C23; C23C; C23C8/00; C30B31/10; H; H10; H10P; H10P95/00; Y; Y10; Y10S; Y10S438/00; Y10S438/935
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
91 words
THE METHOD OF TREATING A SEMICONDUCTIVE BODY COMPRISING THE STEPS OF: FLOWING A FIRST ATMOSPHERE WHICH INCLUDES SUBSTANTIALLY ONLY AN INERT GAS AT A FIRST VELOCITY AROUND AND THROUGH A VESSEL CONTAINING A SEMICONDUCTIVE BODY AND A CONDUCTIVITY-TYPE-DETERMINING IMPURITY, FLOWING SAID FIRST ATMOSPHERE AT A REDUCED VELOCITY AROUND SAID VESSEL, AND ESTABLISHING A SECOND ATMOSPHERE CONTAINING SAID CONDUCTIVITY-TYEP-DETERMINING IMPURITY IN SAID VESSEL AND DIFFUSING SAID CONDUCTIVITY-TYPE-DETERMINING IMPURITY INTO SAID SEMICONDUCTIVE BODY FROM SAID SECOND ATMOSPHERE WHILE MAINTAINING SAID FIRST ATMOSPHERE AT SAID REDUCED VELOCITY AROUND AND IN CONTACT WITH SAID VESSEL.
References Cited (Backward Citations)
US3066052A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |