US3234478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wide band amplifier
Assignee: Beckman Coulter Inc
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Filing: 1961-08-18
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Granted: 1966-02-08
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Expires: 1981-08-18
Abstract
No abstract record available.
Inventors
- 👤 Noel B Braymer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:00
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/38; H03F3/387; H03F1/00; H03F1/30; H03F1/303
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
160 words
AN ULTRALINEAR, WIDE-BAND AMPLIFIER HAVING ISOLATION BETWEEN ITS INPUT AND OUTPUT TERMINALS COMPRISING A FORWARD CONDUCTION MEANS FOR AMPLIFYING AN ERROR SIGNAL HAVING BOTH ALTERNATING AND DIRECT CURRENT FRE-QUENCIES, SAID FORWARD CONDUCTION MEANS HAVING AN INPUT AND AN OUTPUT AND AN ISOLATION MEANS FOR ISOLATING THE INPUT AND OUTPUT THEREOF; FEEDBACK MEANS COMPRISING A PAIR OF PARALLEL CONNECTED PATHS, EACH OF SAID PATHS COMPRISING A SERIES COUPLED MODULATOR, ISOLATION TRANSFORMER AND DEMODULATOR OF EACH FEEDBACK PATH FOR DRIVING THE MODULAPRODUCING A DRIVE SIGNAL COUPLED TO THE MODULATOR AND DEMODULATOR OF EACH FEEDBACK PATH FOR DRIVING THE MODULATOR AND DEMODULATOR OF EACH FEEDBACK PATH SO THAT SAID ISOLATION TRANSFORMERS ARE ALTERNATELY OPEN CIRCUITED FOR A PORTION OF EACH CYCLE OF SAID DRIVE SIGNAL; MEANS CONNECTING THE INPUT OF EACH MODULATOR TO THE OUTPUT OF SAID FORWARD CONDUCTION MEANS; AND MEANS CONNECTING THE OUTPUT OF EACH DEMODULATOR IN SERIES WITH THE INPUT OF SAID FORWARD CONDUCTION MEANS FOR PRODUCING SAID ERROR SIGNAL.
Claim 2
Dependent Claim
160 words
AN ULTRALINEAR, WIDE-BAND AMPLIFIER HAVING ISOLATION BETWEEN ITS INPUT AND OUTPUT TERMINALS COMPRISING A FORWARD CONDUCTION MEANS FOR AMPLIFYING AN ERROR SIGNAL HAVING BOTH ALTERNATING AND DIRECT CURRENT FRE-QUENCIES, SAID FORWARD CONDUCTION MEANS HAVING AN INPUT AND AN OUTPUT AND AN ISOLATION MEANS FOR ISOLATING THE INPUT AND OUTPUT THEREOF; FEEDBACK MEANS COMPRISING A PAIR OF PARALLEL CONNECTED PATHS, EACH OF SAID PATHS COMPRISING A SERIES COUPLED MODULATOR, ISOLATION TRANSFORMER AND DEMODULATOR OF EACH FEEDBACK PATH FOR DRIVING THE MODULAPRODUCING A DRIVE SIGNAL COUPLED TO THE MODULATOR AND DEMODULATOR OF EACH FEEDBACK PATH FOR DRIVING THE MODULATOR AND DEMODULATOR OF EACH FEEDBACK PATH SO THAT SAID ISOLATION TRANSFORMERS ARE ALTERNATELY OPEN CIRCUITED FOR A PORTION OF EACH CYCLE OF SAID DRIVE SIGNAL; MEANS CONNECTING THE INPUT OF EACH MODULATOR TO THE OUTPUT OF SAID FORWARD CONDUCTION MEANS; AND MEANS CONNECTING THE OUTPUT OF EACH DEMODULATOR IN SERIES WITH THE INPUT OF SAID FORWARD CONDUCTION MEANS FOR PRODUCING SAID ERROR SIGNAL.
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) | 1969-02-07 | 1969-08-09 | 1970-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-07 | 1973-08-09 | 1974-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-07 | 1977-08-09 | 1978-02-08 | $7700.00 | Window Closed / Lapsed |