US3351764A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit for balancing out noise current in a photodiode using a d-c zero average waveform
Assignee: Honeywell International Inc
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Filing: 1965-06-04
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Granted: 1967-11-07
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Expires: 1985-06-04
Abstract
No abstract record available.
Inventors
- 👤 David E Blackmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:13
CPC Classifications
G; G01; G01J; G01J1/00; G01J1/42; G01J1/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
AN ELECTRIC CIRCUIT FOR TRANSLATING RADIATION FLUX INTO AN ELECTRICAL SIGNAL COMPRISING A PHOTODIODE HAVING A RADIATION RESPONSIVE ELECTRODE ELEMENT, AND AN INPUT TERMINAL AND AN OUTPUT TERMINAL, MEANS FOR APPLYING AN ALTERNATING SIGNAL TO THE INPUT TERMINAL OF SAID PHOTODIODE, A DC CURRENT AMPLIFIER CONNECTED TO THE OUTPUT TERMINAL OF SAID PHOTODIODE, AND MEANS FOR MAINTAINING A ZERO AVERAGE DC ELECTRIC POTENTIAL BETWEEN THE INPUT AND OUTPUT TERMINALS OF SAID PHOTODIODE.
Claim 2
Dependent Claim
72 words
AN ELECTRIC CIRCUIT FOR TRANSLATING RADIATION FLUX INTO AN ELECTRICAL SIGNAL COMPRISING A PHOTODIODE HAVING A RADIATION RESPONSIVE ELECTRODE ELEMENT, AND AN INPUT TERMINAL AND AN OUTPUT TERMINAL, MEANS FOR APPLYING AN ALTERNATING SIGNAL TO THE INPUT TERMINAL OF SAID PHOTODIODE, A DC CURRENT AMPLIFIER CONNECTED TO THE OUTPUT TERMINAL OF SAID PHOTODIODE, AND MEANS FOR MAINTAINING A ZERO AVERAGE DC ELECTRIC POTENTIAL BETWEEN THE INPUT AND OUTPUT TERMINALS OF SAID PHOTODIODE.
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) | 1970-11-06 | 1971-05-08 | 1971-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-06 | 1975-05-08 | 1975-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-06 | 1979-05-08 | 1979-11-07 | $7700.00 | Window Closed / Lapsed |