Patent US3149231A successfully refreshed from Google Patents.
US3149231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Infraped target detection using atmospheric filter to remove solar radiation above 4microns wavelength
Assignee: Hupp Corp
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Filing: 1960-03-07
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Granted: 1964-09-15
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Expires: 1980-03-07
Abstract
No abstract record available.
Inventors
- 👤 Leonard E Ravich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:27
CPC Classifications
G; G01; G01S; G01S3/00; G01S3/78; G01S3/781
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
THE METHOD OF DETECTIVELY DIFFERENTIATING BETWEEN A BODY EMITTING INFRARED RADIATION AT LEAST SOME OF WHICH IS ABOVE 4 MICRONS IN WAVELENGTH IN THE EARTH''S ATMOSPHERE AND INFRARED SOLAR RADIATION BY UTILIZING A SINGLE INFRARED SENSITIVE CELL IN CONJUNCTION WITH AN OPTICAL SYSTEM COMPRISING THE STEPS OF: (A) FILTERING BY MEANS OF SAID OPTICAL SYSTEM SUBSTANTIALLY ALL RADIATION SHORTER THAN ABOUT 4 MICRONS IN WAVELENGTH WHICH ARE DIRECTED TOWARD SAID CELL REGARDLESS OF THE SOURCE THEREOF, (B) ATMOSPHERE FILTERING INFLUENTIAL AMOUNTS OF SAID SOLAR INFRARED RADIATION TO WHICH THE CELL IS RESPONSIVE AT WAVELENGTHS LONGER THAN ABOUT 4 MICRONS, AND (C) PASSING AT LEAST SOME OF SAID INFRARED RADIATION ABOVE 4 MICRONS EMITTED BY SAID BODY THROUGH SAID OPTICAL SYSTEM TO SAID CELL TO PROVIDE AN OUTPUT SIGNAL THEREFROM RESPONSIVE TO SAID BODY EMITTED RADIATION.
Claim 2
Independent Claim
135 words
THE METHOD OF DETECTIVELY DIFFERENTIATING BETWEEN A BODY EMITTING INFRARED RADIATION AT LEAST SOME OF WHICH IS ABOVE 4 MICRONS IN WAVELENGTH IN THE EARTH''S ATMOSPHERE AND INFRARED SOLAR RADIATION BY UTILIZING A SINGLE INFRARED SENSITIVE CELL IN CONJUNCTION WITH AN OPTICAL SYSTEM COMPRISING THE STEPS OF: (A) FILTERING BY MEANS OF SAID OPTICAL SYSTEM SUBSTANTIALLY ALL RADIATION SHORTER THAN ABOUT 4 MICRONS IN WAVELENGTH WHICH ARE DIRECTED TOWARD SAID CELL REGARDLESS OF THE SOURCE THEREOF, (B) ATMOSPHERE FILTERING INFLUENTIAL AMOUNTS OF SAID SOLAR INFRARED RADIATION TO WHICH THE CELL IS RESPONSIVE AT WAVELENGTHS LONGER THAN ABOUT 4 MICRONS, AND (C) PASSING AT LEAST SOME OF SAID INFRARED RADIATION ABOVE 4 MICRONS EMITTED BY SAID BODY THROUGH SAID OPTICAL SYSTEM TO SAID CELL TO PROVIDE AN OUTPUT SIGNAL THEREFROM RESPONSIVE TO SAID BODY EMITTED RADIATION.
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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) | 1967-09-15 | 1968-03-16 | 1968-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-15 | 1972-03-16 | 1972-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-15 | 1976-03-16 | 1976-09-15 | $7700.00 | Window Closed / Lapsed |