US2671154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Infrared detector
Assignee: Individual
•
Filing: 1952-04-02
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Granted: 1954-03-02
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Expires: 1972-04-02
Abstract
No abstract record available.
Inventors
- 👤 Burstein Elias
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:57
CPC Classifications
G; G01; G01J; G01J5/00; G01J5/10; G01J5/28; F; F17; F17C; F17C3/00; F17C3/02; F17C3/08; F17C3/085; H; H10; H10P; H10P95/00; Y; Y10; Y10S; Y10S62/00; Y10S62/19
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
109 words
A DEVICE FOR DETECTION OF FAR INFRA-RED RADIATION COMPRISING; A BODY OF A HOMOPOLAR SUBSTANCE CONTAINING IMPURITIES, SAID BODY BEING SUITABLY ELECTROPLATED ON OPPOSITE ENDS TO TRANSPOSE A PHOTOCONDUCTIVE CURRENT, AN INNER SEALED CHAMBER SUBSTANTIALLY ENCLOSING SAID BODY, A WINDOW IN SAID INNER CHAMBER TO PERMIT ENTRANCE OF THE INFRA-RED RADIATION, A SECOND CHAMBR SUBSTANTIALLY ENCOLSING SAID INNER CHAMBER CONTAINING A LIQUID OR GAS MAINTAINED AT APPROXIMATELY ABSOLUTE ZERO TEMPERATURE, A THIRD CHAMBER SUBSTANTIALLY ENCLOSING SAID SECOND CHAMBER CONTAINING LIQUID NITROGEN OR AN EQUIVALENT COOLING AGENT, AND DETECTING MEANS ELECTRICALLY CONNECTED TO SAID ELECTROPLATED ENDS OF SAID HOMOPOLAR BODY FOR DETECTING A PHOTOCONDUCTIVE RESPONSE TO INFRA-RED RADIATION IMPINGING THEREON.
References Cited (Backward Citations)
US2547173A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-01 | 1957-08-31 | 1958-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-01 | 1961-08-31 | 1962-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-01 | 1965-08-31 | 1966-03-02 | $7700.00 | Window Closed / Lapsed |