US2805347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductive devices
Assignee: AT&T Inc
•
Filing: 1954-05-27
•
Granted: 1957-09-03
•
Expires: 1974-05-27
Abstract
No abstract record available.
Inventors
- 👤 James R Haynes
- 👤 John A Hornbeck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:15
CPC Classifications
H; H10; H10D; H10D62/00; H10D62/60; G; G01; G01R; G01R31/00; G01R31/26; H10D10/00; H10D62/10; H10D99/00; Y; Y10; Y10S; Y10S438/00; Y10S438/904
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
IN COMBINATION, A SEMICONDUCTIVE DEVICE INCLUDING A SEMICONDUCTIVE BODY OF A MATERIAL CHARACTERIZED BY A LARGE CONCENTRATION OF TEMPORARY TRAPS WHICH ARE DISTINGUISHED BY THEIR ABILITY TO ENTRAP CHARGE CARRIERS, A PAIR OF ELECTRODES MAKING OHMIC CONNECTION AT TWO SPACED REGIONS ALONG THE SURFACE OS SAID BODY, AND MEANS FOR INJECTING MINORITY CARRIERS INTO SAID BODY AT A REGION BETWEEN SAID SPACED REGIONS, AND VOLTAGE SUPPLY MEANS AND A LOAD CONNECTED SERIALLY BETWEEN SAID ELECTRODES.
Claim 2
Dependent Claim
75 words
IN COMBINATION, A SEMICONDUCTIVE DEVICE INCLUDING A SEMICONDUCTIVE BODY OF A MATERIAL CHARACTERIZED BY A LARGE CONCENTRATION OF TEMPORARY TRAPS WHICH ARE DISTINGUISHED BY THEIR ABILITY TO ENTRAP CHARGE CARRIERS, A PAIR OF ELECTRODES MAKING OHMIC CONNECTION AT TWO SPACED REGIONS ALONG THE SURFACE OS SAID BODY, AND MEANS FOR INJECTING MINORITY CARRIERS INTO SAID BODY AT A REGION BETWEEN SAID SPACED REGIONS, AND VOLTAGE SUPPLY MEANS AND A LOAD CONNECTED SERIALLY BETWEEN SAID ELECTRODES.
References Cited (Backward Citations)
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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) | 1960-09-02 | 1961-03-04 | 1961-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-02 | 1965-03-04 | 1965-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-02 | 1969-03-04 | 1969-09-03 | $7700.00 | Window Closed / Lapsed |