Patent US1978119A successfully refreshed from Google Patents.
Patent US3139529A successfully refreshed from Google Patents.
US3139529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Infrared detection apparatus with means to expose a constant area of the chopper to the detector
Assignee: Honeywell Inc
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Filing: 1961-03-28
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Granted: 1964-06-30
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Expires: 1981-03-28
Abstract
No abstract record available.
Inventors
- 👤 Norman L Stauffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:37
CPC Classifications
G; G01; G01J; G01J5/00; G01J5/02; G01J5/08; G01J5/0803; G01J5/0805; G01J1/00; G01J1/10; G01J1/20; G01J1/34; G01J1/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A RADIOMETER COMPRISING, THE COMBINATION, A RADIATION DETECTOR CELL, OPTICAL MEANS FOR RECEIVINGK AND FOCUSING RADIATION TO BE MEASURED ONTO SAID DETECTOR CELL, A SOURCE OF REFERENCE RADIATION POSITIONED TO DIRECT RADIATION THEREFROM ONTO SAID DETECTOR CELL FOR COMPARISON WITH SAID RADIATION FROM SAID OPTICAL MEANS, CHOPPER MEANS FOR INTERMITTENTLY AND ALTERNATELY INTERRUPTING THE FLOW OF RADIATION FROM SAID OPTICAL MEANS AND FROM SAID REFERENCE SOURCE TOWARD SAID DETECTOR CELL, SAID CHOPPER
Claim 2
Dependent Claim
72 words
A RADIOMETER COMPRISING, THE COMBINATION, A RADIATION DETECTOR CELL, OPTICAL MEANS FOR RECEIVINGK AND FOCUSING RADIATION TO BE MEASURED ONTO SAID DETECTOR CELL, A SOURCE OF REFERENCE RADIATION POSITIONED TO DIRECT RADIATION THEREFROM ONTO SAID DETECTOR CELL FOR COMPARISON WITH SAID RADIATION FROM SAID OPTICAL MEANS, CHOPPER MEANS FOR INTERMITTENTLY AND ALTERNATELY INTERRUPTING THE FLOW OF RADIATION FROM SAID OPTICAL MEANS AND FROM SAID REFERENCE SOURCE TOWARD SAID DETECTOR CELL, SAID CHOPPER
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) | 1967-06-30 | 1967-12-30 | 1968-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-30 | 1971-12-30 | 1972-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-30 | 1975-12-30 | 1976-06-30 | $7700.00 | Window Closed / Lapsed |