Patent US2849343A successfully refreshed from Google Patents.
US2849343A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing semi-conductive bodies having adjoining zones of different conductivity properties
Assignee: US Philips Corp
•
Filing: 1955-03-30
•
Granted: 1958-08-26
•
Expires: 1975-03-30
Abstract
No abstract record available.
Inventors
- 👤 Kroger Ferdinand Anne
- 👤 Basart Johan Charles Marie
- 👤 Boomgaard Jan Van Den
- 👤 Vink Hendrik Jan
- 👤 Bloem Jan
- 👤 Nobel Dirk De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:04
CPC Classifications
H; H10; H10P; H10P14/00; H10P14/20; H10P14/34; H10P14/3402; H10P14/3424; H10P14/3432; C; C30; C30B; C30B13/00; C30B13/08; C30B13/10; C30B13/12; C30B15/00; C30B15/02; C30B15/04; H10P14/26; H10P14/263; H10P14/3414; H10P14/3422; H10P14/3436; H10P95/00; Y; Y10; Y10S; Y10S438/00; Y10S438/914; Y10S438/925
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
A METHOD OF PRODUCING A SEMI-CONDUCTIVE BODY CONTAINING A P-N JUNCTION, WHICH COMPRISES PROVIDING A SEMICONDUCTIVE BODY CONTAINING A VOLATILE CONSISTUENT WHICH TENDS TO EVAPORATE OUT OF THE SEMI-CONDUCTIVE BODY WHEN THE LATTER IS IN A MOLTEN STATE, MELTING AND FREEZING ADJACENT PORTIONS OF SAID SEMI-CONDUCTIVE BODY IN THE PRESENCE OF A VAPOR OF SAID VOLTILE CONSTITUENT, AND ESTABLISHING A P-N JUNCTION IN SAID BODY BY VARYING THE VAPOR PRESSURE OF SAID VOLATILE CONSTITUENT BETWEN TWO EXTREMES WHILE MELTING AND FREEZING SAID ADJACENT PORTIONS OF SAID SEMI-CONDUCTOR BODY WHEREBY AT ONE EXTREME OF SAID PRESSURE ONE OF SAID MOLTEN PORTIONS OF THE BODY TAKES UP SAID VOLATILE CONSTITUENT AND UPON SUBSEQUENT FREEZING PRODUCES ONE TYPE OF CONDUCTIVITY MATERIAL, AND AT THE OTHER EXTREME OF SAID PRESSURE THE ADJACENT MOLETN PORTION GIVES OFF SAID VOLATILE CONSTITUENT AND UPON SUBSEQUENT FREEZING PRODUCES THE OPPOSITE TYPE OF CONDUCTIVITY MATERIAL, SAID FROZEN ADJACENT PORTIONS ESTABLISHING A P-N JUNCTION WITHIN THE BODY.
Claim 2
Independent Claim
157 words
A METHOD OF PRODUCING A SEMI-CONDUCTIVE BODY CONTAINING A P-N JUNCTION, WHICH COMPRISES PROVIDING A SEMICONDUCTIVE BODY CONTAINING A VOLATILE CONSISTUENT WHICH TENDS TO EVAPORATE OUT OF THE SEMI-CONDUCTIVE BODY WHEN THE LATTER IS IN A MOLTEN STATE, MELTING AND FREEZING ADJACENT PORTIONS OF SAID SEMI-CONDUCTIVE BODY IN THE PRESENCE OF A VAPOR OF SAID VOLTILE CONSTITUENT, AND ESTABLISHING A P-N JUNCTION IN SAID BODY BY VARYING THE VAPOR PRESSURE OF SAID VOLATILE CONSTITUENT BETWEN TWO EXTREMES WHILE MELTING AND FREEZING SAID ADJACENT PORTIONS OF SAID SEMI-CONDUCTOR BODY WHEREBY AT ONE EXTREME OF SAID PRESSURE ONE OF SAID MOLTEN PORTIONS OF THE BODY TAKES UP SAID VOLATILE CONSTITUENT AND UPON SUBSEQUENT FREEZING PRODUCES ONE TYPE OF CONDUCTIVITY MATERIAL, AND AT THE OTHER EXTREME OF SAID PRESSURE THE ADJACENT MOLETN PORTION GIVES OFF SAID VOLATILE CONSTITUENT AND UPON SUBSEQUENT FREEZING PRODUCES THE OPPOSITE TYPE OF CONDUCTIVITY MATERIAL, SAID FROZEN ADJACENT PORTIONS ESTABLISHING A P-N JUNCTION WITHIN THE BODY.
References Cited (Backward Citations)
US2447829A
Cited
US2597028A
Cited
US2683676A
Cited
US2730470A
Cited
US2692839A
Cited
BE510303A
Cited
US2739088A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-25 | 1962-02-24 | 1962-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-25 | 1966-02-24 | 1966-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-25 | 1970-02-24 | 1970-08-26 | $7700.00 | Window Closed / Lapsed |