Patent US3250967A successfully refreshed from Google Patents.
US3250967A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid state triode
Assignee: RCA Corp
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Filing: 1961-12-22
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Granted: 1966-05-10
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Expires: 1981-12-22
Abstract
No abstract record available.
Inventors
- 👤 Rose Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:25
CPC Classifications
H; H10; H10D; H10D48/00; H10D48/30; H10D48/32; H10D48/36; H10D48/362
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
118 words
A SOLID STATE DEVICE COMPRISING A FIRST BODY OF A BANDGAP MATERIAL HAVING A PARTICULAR CONDUCTIVITY TYPE, A CONDUCTING BODY MAKING ABRUPT BLOCKING CONTACT TO SAID FIRST BODY, AND MEANS FOR INJECTING FREE CHARGE CARRIERS INTO SAID CONDUCTING BODY, SAID MEANS INCLUDING A SECOND BODY OF A BANDAGP MATERIAL HAVING SAID PARTICULAR CONDUCTIVITY TYPE, SAID SECOND BODY SPACED FROM SAID CONDUCTING BODY BY A LAYER OF AN INSULATOR ABOUT 10 TO 100 A.U. THICK, SAID CONDUCTING BODY BEING SUBSTANTIALLY PERMEABLE TO SAID INJECTED FREE CHARGE CARRIERS BETWEEN THE POINT OF SAID INJECTION AND SAID BLOCKING CONTACT AND OHMIC CONTACTS TO EACH OF SAID FIRST BODY OF BANDGAP MATERIAL, SAID SECOND BODY OF BANDGAP MATERIAL, AND SAID CONDUCTING BODY.
Claim 2
Dependent Claim
118 words
A SOLID STATE DEVICE COMPRISING A FIRST BODY OF A BANDGAP MATERIAL HAVING A PARTICULAR CONDUCTIVITY TYPE, A CONDUCTING BODY MAKING ABRUPT BLOCKING CONTACT TO SAID FIRST BODY, AND MEANS FOR INJECTING FREE CHARGE CARRIERS INTO SAID CONDUCTING BODY, SAID MEANS INCLUDING A SECOND BODY OF A BANDAGP MATERIAL HAVING SAID PARTICULAR CONDUCTIVITY TYPE, SAID SECOND BODY SPACED FROM SAID CONDUCTING BODY BY A LAYER OF AN INSULATOR ABOUT 10 TO 100 A.U. THICK, SAID CONDUCTING BODY BEING SUBSTANTIALLY PERMEABLE TO SAID INJECTED FREE CHARGE CARRIERS BETWEEN THE POINT OF SAID INJECTION AND SAID BLOCKING CONTACT AND OHMIC CONTACTS TO EACH OF SAID FIRST BODY OF BANDGAP MATERIAL, SAID SECOND BODY OF BANDGAP MATERIAL, AND SAID CONDUCTING BODY.
Claim 3
Dependent Claim
126 words
A SOLID STATE DEVICE COMPRISING A SINGLE CRYSTAL SEMICONDUCTOR BODY HAVING A PAIR OF OPPOSED MAJOR SURFACES, A FIRST LAYER OF A METAL IN OHMIC CONTACT WITH ONE OF SAID MAJOR SURFACES, A SECOND LAYER OF ACONDUCTOR MATERIAL IN ABRUPT BLOCKING CONTACR WITH THE OTHER OF SAID MAJOR SURFACES, SAID SECOND LAYER HAVING A THICKNESS SUCH THAT SAID SECOND LAYER IS SUBSTANTIALLY PERMEABLE ACROSS ITS THICKNESS TO CHARGE CARRIERS OF SAID PARTICULAR CONDUCTIVITY TYPE EMITTED INTO SAID SECOND LAYER , A THIRD LAYER ABOUT 10 TO 100 A.U. THICK OF AN INSULATOR CONTACTING SAID SECONE LAYER, A FOURTH LAYER OF A SEMICONDUCTOR HAVING SAID PARTICULAR CONDUCTIVITY TYPE IN CONTACT WITH SAID THIRD LAYER, AND A FIFTH LAYER OF METAL IN OHMIC CONTACR WITH SAID FOURTH LAYER.
Claim 4
Dependent Claim
126 words
A SOLID STATE DEVICE COMPRISING A SINGLE CRYSTAL SEMICONDUCTOR BODY HAVING A PAIR OF OPPOSED MAJOR SURFACES, A FIRST LAYER OF A METAL IN OHMIC CONTACT WITH ONE OF SAID MAJOR SURFACES, A SECOND LAYER OF ACONDUCTOR MATERIAL IN ABRUPT BLOCKING CONTACR WITH THE OTHER OF SAID MAJOR SURFACES, SAID SECOND LAYER HAVING A THICKNESS SUCH THAT SAID SECOND LAYER IS SUBSTANTIALLY PERMEABLE ACROSS ITS THICKNESS TO CHARGE CARRIERS OF SAID PARTICULAR CONDUCTIVITY TYPE EMITTED INTO SAID SECOND LAYER , A THIRD LAYER ABOUT 10 TO 100 A.U. THICK OF AN INSULATOR CONTACTING SAID SECONE LAYER, A FOURTH LAYER OF A SEMICONDUCTOR HAVING SAID PARTICULAR CONDUCTIVITY TYPE IN CONTACT WITH SAID THIRD LAYER, AND A FIFTH LAYER OF METAL IN OHMIC CONTACR WITH SAID FOURTH LAYER.
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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) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |