US3283207A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-emitting transistor system
Assignee: International Business Machines Corp
•
Filing: 1963-05-27
•
Granted: 1966-11-01
•
Expires: 1983-05-27
Abstract
No abstract record available.
Inventors
- 👤 Klein Melvin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:48
CPC Classifications
H; H01; H01S; H01S5/00; H01S5/30; H01S5/32; H10; H10H; H10H20/00; H10H20/80; H10H20/81; H10H20/813
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
A LIGHT-EMITTING TRANSISTOR SYSTEM COMPRISING: A TRANSISTOR OF INTERMETALLIC SEMICONDUCTOR MATERIAL INCLUDING A BASE REGION OF ONE CONDUCTIVITY TYPE INTERMEDIATE AND CONTIGUOUS WITH EMITTER AND COLLECTOR REGIONS OF THE OPPOSITE CONDUCTIVITY TYPE AND DEFINING PN JUNCTION THEREWITH, SAID BASE REGION HAVING A THICKNESS NOT GREATER THAN ONE MICRON WHICH PROVIDES SAID TRANSISTOR WITH A HIGH BETA; AND CIRCUIT MEANS CONNECTING SAID TRANSISTOR IN A COMMON EMITTER CONFIGURATION AND INCLUDING MEANS FOR REVERSELY BIASING SAID COLLECTOR REGION WITH RESPECT TO SAID BASE REGION AND FURTHER INCLUDING CONTROL MEANS FOR APPLYING TO SAID EMITTER AND BASE REGIONS AN ELECTRICAL CONTROL SIGNAL HAVING A CHARACTERISTIC EFFECTIVE TO ESTABLISH BETWEEN SAID EMITTER AND COLLECTOR REGIONS A CURRENT FLOW WHICH IS LARGE WITH RESPECT TO THAT OF SAID CONTROL SIGNAL FOR DRIVING SAID TRANSISTOR INTO SATURATION, THEREBY FORWARDLY BIASING SAID COLLECTOR REGION WITH RESPECT TO SAID BASE REGION AND DEVELOPING A LIGHT OUTPUT ADJACENT THE COLLECTOR-BASE JUNCTION.
Claim 2
Dependent Claim
152 words
A LIGHT-EMITTING TRANSISTOR SYSTEM COMPRISING: A TRANSISTOR OF INTERMETALLIC SEMICONDUCTOR MATERIAL INCLUDING A BASE REGION OF ONE CONDUCTIVITY TYPE INTERMEDIATE AND CONTIGUOUS WITH EMITTER AND COLLECTOR REGIONS OF THE OPPOSITE CONDUCTIVITY TYPE AND DEFINING PN JUNCTION THEREWITH, SAID BASE REGION HAVING A THICKNESS NOT GREATER THAN ONE MICRON WHICH PROVIDES SAID TRANSISTOR WITH A HIGH BETA; AND CIRCUIT MEANS CONNECTING SAID TRANSISTOR IN A COMMON EMITTER CONFIGURATION AND INCLUDING MEANS FOR REVERSELY BIASING SAID COLLECTOR REGION WITH RESPECT TO SAID BASE REGION AND FURTHER INCLUDING CONTROL MEANS FOR APPLYING TO SAID EMITTER AND BASE REGIONS AN ELECTRICAL CONTROL SIGNAL HAVING A CHARACTERISTIC EFFECTIVE TO ESTABLISH BETWEEN SAID EMITTER AND COLLECTOR REGIONS A CURRENT FLOW WHICH IS LARGE WITH RESPECT TO THAT OF SAID CONTROL SIGNAL FOR DRIVING SAID TRANSISTOR INTO SATURATION, THEREBY FORWARDLY BIASING SAID COLLECTOR REGION WITH RESPECT TO SAID BASE REGION AND DEVELOPING A LIGHT OUTPUT ADJACENT THE COLLECTOR-BASE JUNCTION.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-31 | 1970-05-02 | 1970-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-31 | 1974-05-02 | 1974-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-31 | 1978-05-02 | 1978-11-01 | $7700.00 | Window Closed / Lapsed |