US2650311A
Expired / Lapsed
US
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Radiant energy detecting method and apparatus
Assignee: Purdue Research Foundation
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Filing: 1950-10-26
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Granted: 1953-08-25
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Expires: 1970-10-26
Abstract
No abstract record available.
Inventors
- 👤 Bray Ralph
- 👤 Lark-Horovitz Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:04
CPC Classifications
G; G01; G01S; G01S11/00; G01S11/12; G01J; G01J5/00; G01J5/10; G01J5/28; Y; Y10; Y10S; Y10S313/00; Y10S313/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A METHOD OF DETECTING CHANGES IN THE INTENSITY OF RADIANT AND HEAT ENERGY COMPRISING DIRECTING SAID ENERGY TO AN AREA ADJACENT THE AREA OF CONTACT BETWEEN THE RECTIFYING ELECTRODE AND THE BODY OF AN ELECTRICAL DEVICE WHICH INCLUDES A BODY OF P-TYPE GERMANIUM SEMI-CONDUCTING MATERIAL, AN ELECTRODE IN RECTIFYING CONTACT WITH A SURFACE THEREOF, AND A BASE ELECTRODE, APPLYING A POTENTIAL BETWEEN SAID RECTIFYING ELECTRODE AND SAID BODY IN THE BACK DIRECTION, AND DETECTING CHANGES IN THE INTENSITY OF ELECTRON CURRENT FLOW FROM SAID BODY TO SAID RECTIFYING ELECTRODE, WHICH CHANGES OCCUR IN RESPONSE TO CHANGES IN INTENSITY OF SAID ENERGY.
Claim 2
Independent Claim
101 words
A METHOD OF DETECTING CHANGES IN THE INTENSITY OF RADIANT AND HEAT ENERGY COMPRISING DIRECTING SAID ENERGY TO AN AREA ADJACENT THE AREA OF CONTACT BETWEEN THE RECTIFYING ELECTRODE AND THE BODY OF AN ELECTRICAL DEVICE WHICH INCLUDES A BODY OF P-TYPE GERMANIUM SEMI-CONDUCTING MATERIAL, AN ELECTRODE IN RECTIFYING CONTACT WITH A SURFACE THEREOF, AND A BASE ELECTRODE, APPLYING A POTENTIAL BETWEEN SAID RECTIFYING ELECTRODE AND SAID BODY IN THE BACK DIRECTION, AND DETECTING CHANGES IN THE INTENSITY OF ELECTRON CURRENT FLOW FROM SAID BODY TO SAID RECTIFYING ELECTRODE, WHICH CHANGES OCCUR IN RESPONSE TO CHANGES IN INTENSITY OF SAID ENERGY.
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) | 1956-08-24 | 1957-02-23 | 1957-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-24 | 1961-02-23 | 1961-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-24 | 1965-02-23 | 1965-08-25 | $7700.00 | Window Closed / Lapsed |