Patent US3299281A successfully refreshed from Google Patents.
US3299281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transistor element and transistor circuit
Assignee: US Philips Corp
•
Filing: 1953-12-01
•
Granted: 1967-01-17
•
Expires: 1973-12-01
Abstract
No abstract record available.
Inventors
- 👤 Cluwen Johannes Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:48
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/04; H03F3/14; H03C; H03C1/00; H03C1/36; H03D; H03D1/00; H03D1/14; H03D1/18; H03D3/00; H03D3/02; H03D3/06; H03D3/14; H03D7/00; H03D7/12; H10; H10D; H10D88/00; H10D99/00; Y; Y10; Y10S; Y10S148/00; Y10S148/032
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A TRANSISTOR COMPRISING A SEMI-CONDUCTIVE BODY OF ONE CONDUCTIVITY TYPE, AT LEAST THREE SPACED ZONES WITHIN THE BODY OF A CONDUCTIVITY TYPE OPPOSITE TO SAID ONE CONDUCTIVITY TYPE, TWO OF SAID ZONES EACH BEING SPACED FROM A THIRD ZONE BY SEMI-CONDUCTIVE MATERIAL OF SAID ONE TYPE HAVING A THICKNESS SMALLER THAN THE CHARACTERISTIC DIFFUSION LENGTH OF MINORITY CARRIERS IN SAID ONE TYPE MATERIAL, SAID TWO ZONES BEING SPACED FROM EACH OTHER BY SEMI-CONDUCTIVE MATERIAL OF SAID ONE TYPE HAVING A THICKNESS GREATER THAN SAID CHARACTERISTIC DIFFUSION LENGTH, A PAIR OF CONNECTIONS SECURED TO SAID BODY OF SAID ONE TYPE MATERIAL AT SPACED POSITIONS, AND CONNECTIONS SECURED TO AT LEAST SAID TWO ZONES OF SAID OPPOSITE TYPE MATERIAL.
Claim 2
Dependent Claim
117 words
A TRANSISTOR COMPRISING A SEMI-CONDUCTIVE BODY OF ONE CONDUCTIVITY TYPE, AT LEAST THREE SPACED ZONES WITHIN THE BODY OF A CONDUCTIVITY TYPE OPPOSITE TO SAID ONE CONDUCTIVITY TYPE, TWO OF SAID ZONES EACH BEING SPACED FROM A THIRD ZONE BY SEMI-CONDUCTIVE MATERIAL OF SAID ONE TYPE HAVING A THICKNESS SMALLER THAN THE CHARACTERISTIC DIFFUSION LENGTH OF MINORITY CARRIERS IN SAID ONE TYPE MATERIAL, SAID TWO ZONES BEING SPACED FROM EACH OTHER BY SEMI-CONDUCTIVE MATERIAL OF SAID ONE TYPE HAVING A THICKNESS GREATER THAN SAID CHARACTERISTIC DIFFUSION LENGTH, A PAIR OF CONNECTIONS SECURED TO SAID BODY OF SAID ONE TYPE MATERIAL AT SPACED POSITIONS, AND CONNECTIONS SECURED TO AT LEAST SAID TWO ZONES OF SAID OPPOSITE TYPE MATERIAL.
References Cited (Backward Citations)
US2100458A
Cited
US2095998A
Cited
US2569347A
Cited
US2600500A
Cited
US2666814A
Cited
US2644859A
Cited
US2663806A
Cited
US2655610A
Cited
US2742383A
Cited
US2657360A
Cited
US2754431A
Cited
US2801347A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-16 | 1970-07-18 | 1971-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-16 | 1974-07-18 | 1975-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-16 | 1978-07-18 | 1979-01-17 | $7700.00 | Window Closed / Lapsed |