US2828232A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing junctions in semi-conductor device
Assignee: Raytheon Co
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Filing: 1956-05-01
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Granted: 1958-03-25
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Expires: 1976-05-01
Abstract
No abstract record available.
Inventors
- 👤 Jon H Myer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:42
CPC Classifications
H; H10; H10P; H10P32/00; H10P32/10; H10P32/17; H10P32/171; C; C08; C08F; C08F10/00; H10P32/14; H10P32/1404; H10P95/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
THE METHOD OF PRODUCING A JUNCTION IN A SEMICONDUCTOR STARTING CRYSTAL OF A PREDETERMINED CONDUCTIVITY TYPE BY DIFFUSING ATOMS OF AN ACTIVE IMPURITY INTO SAID CRYSTAL, SAID METHOD INCLUDING THE STEPS OF: BRINGING A SALT HAVING AN ACTIVE IMPURITY AS ONE OF ITS ELEMENTS INTO CONTACT WITH A PORTION OF A SURFACE OF THE CRYSTAL, AND HEATING THE CRYSTAL-SALT COMBINATION TO A TEMPERATURE ABOVE THE MELTING POINT OF THE SALT, BUT BELOW THE MELTING POINT OF THE CRYSTAL AND BELOW THE DECOMPOSITION TEMPERATURTE OF THE SALT.
Claim 2
Independent Claim
86 words
THE METHOD OF PRODUCING A JUNCTION IN A SEMICONDUCTOR STARTING CRYSTAL OF A PREDETERMINED CONDUCTIVITY TYPE BY DIFFUSING ATOMS OF AN ACTIVE IMPURITY INTO SAID CRYSTAL, SAID METHOD INCLUDING THE STEPS OF: BRINGING A SALT HAVING AN ACTIVE IMPURITY AS ONE OF ITS ELEMENTS INTO CONTACT WITH A PORTION OF A SURFACE OF THE CRYSTAL, AND HEATING THE CRYSTAL-SALT COMBINATION TO A TEMPERATURE ABOVE THE MELTING POINT OF THE SALT, BUT BELOW THE MELTING POINT OF THE CRYSTAL AND BELOW THE DECOMPOSITION TEMPERATURTE OF THE SALT.
References Cited (Backward Citations)
US2697269A
Cited
US2750310A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-24 | 1961-09-23 | 1962-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-24 | 1965-09-23 | 1966-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-24 | 1969-09-23 | 1970-03-25 | $7700.00 | Window Closed / Lapsed |