US3274381A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Division circuit
Assignee: Nihon Genshiryoku Kenkyusho
•
Filing: 1962-09-11
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Granted: 1966-09-20
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Expires: 1982-09-11
Abstract
No abstract record available.
Inventors
- 👤 Amano Noboru
- 👤 Wakayama Naoaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:33
CPC Classifications
G; G06; G06G; G06G7/00; G06G7/12; G06G7/16; G06G7/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A DIVISION CIRCUIT COMPRISING MEANS TO INTRODUCE AN ALTERNATING CURRENT PROPORTIONAL TO A DIVIDEND AND A CURRENT PROPORTIONAL TO A DIVISOR SIMULTANEOUSLY INTO A LOGARITHMIC ELEMENT, THE VOLTAGE ACROSS SAID ELEMENT BEING PROPORTIONAL TO THE LOGARITHM OF THE CURRENT FLOWING THROUGH SAID ELEMENT, MEANS TO PASS ONLY THE COMPONENT OF THE A.C. FUNDAMENTAL WAVE FROM THE VOLTAGE
Claim 2
Dependent Claim
57 words
A DIVISION CIRCUIT COMPRISING MEANS TO INTRODUCE AN ALTERNATING CURRENT PROPORTIONAL TO A DIVIDEND AND A CURRENT PROPORTIONAL TO A DIVISOR SIMULTANEOUSLY INTO A LOGARITHMIC ELEMENT, THE VOLTAGE ACROSS SAID ELEMENT BEING PROPORTIONAL TO THE LOGARITHM OF THE CURRENT FLOWING THROUGH SAID ELEMENT, MEANS TO PASS ONLY THE COMPONENT OF THE A.C. FUNDAMENTAL WAVE FROM THE VOLTAGE
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 |