US3274387A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Infrared detector comprising a cooled semi-conductor disposed in a magnetic field
Assignee: National Research Development Corp UK
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Filing: 1961-08-21
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Granted: 1966-09-20
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Expires: 1981-08-21
Abstract
No abstract record available.
Inventors
- 👤 Putley Ernest Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:29
CPC Classifications
G; G01; G01J; G01J5/00; G01J5/02; G01J5/06; G01J5/061; Y; Y10; Y10S; Y10S505/00; Y10S505/825; Y10S505/848; Y10S505/849
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
A PHOTOCONDUCTIVE CELL FOR DETECTING RADIATION IN THE WAVEBAND 0.1 TO 8 MM. COMPRISING, IN COMBINATION, A MASS OF VERY PURE SEMICONDUCTOR MATERIAL HAVING CONDUCTION LEADS CONNECTED THERETO TO ESTABLISH A CURRENT PATH THROUGH SAID MATERIAL, MEANS FOR ESTABLISHING A MAGNETIC FIELD OF AT LEAST 2000 GAUSS THROUGH THE MASS AT LEAST SUBSTANTIALLY NORMAL TO SAID CURRENT PATH DEFINED IN THE MA-
Claim 2
Dependent Claim
62 words
A PHOTOCONDUCTIVE CELL FOR DETECTING RADIATION IN THE WAVEBAND 0.1 TO 8 MM. COMPRISING, IN COMBINATION, A MASS OF VERY PURE SEMICONDUCTOR MATERIAL HAVING CONDUCTION LEADS CONNECTED THERETO TO ESTABLISH A CURRENT PATH THROUGH SAID MATERIAL, MEANS FOR ESTABLISHING A MAGNETIC FIELD OF AT LEAST 2000 GAUSS THROUGH THE MASS AT LEAST SUBSTANTIALLY NORMAL TO SAID CURRENT PATH DEFINED IN THE MA-
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) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |