Patent US3300631A successfully refreshed from Google Patents.
US3300631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Analog multiplier
Assignee: TDK Micronas GmbH
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Filing: 1963-04-17
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Granted: 1967-01-24
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Expires: 1983-04-17
Abstract
No abstract record available.
Inventors
- 👤 Lucio M Vallese
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:55
CPC Classifications
G; G06; G06G; G06G7/00; G06G7/12; G06G7/16; G06G7/163
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
AN ANALOG MULTIPLIER FOR TWO ELECTRICAL SIGNALS COMPRISING: A TRANSISTOR AMPLIFIER INCLUDING TWO COMPLEMENTARY SYMMETRY TRANSISTORS, EACH HAVING AT LEAST BASE, EMITTER AND COLLECTOR ELECTRODES; FIRST MEANS TO COUPLE A FIRST OF SAID SIGNALS TO SAID BASE ELECTRODE OF EACH TRANSISTOR, THE SIGNAL APPEARING AT EACH OF SAID BASE ELECTRODES BEING SUBSTANTIALLY THE SAME; SECOND MEANS TO COUPLE THE SECOND OF SAID SIGNALS TO SAID COLLECTOR ELECTRODES OF EACH TRANSISTOR TO CONTROL THE COLLECTOR CURRENT OF SAID TRANSISTORS TO BE PROPORTIONAL TO SAID SECOND SIGNAL; AND OUTPUT MEANS COUPLED TO SAID COLLECTOR ELECTRODE OF EACH OF SAID TRANSISTORS TO PROVIDE AN OUTPUT VOLTAGE PROPORTIONAL TO THE PRODUCT OF SAID TWO SIGNALS.
Claim 2
Dependent Claim
111 words
AN ANALOG MULTIPLIER FOR TWO ELECTRICAL SIGNALS COMPRISING: A TRANSISTOR AMPLIFIER INCLUDING TWO COMPLEMENTARY SYMMETRY TRANSISTORS, EACH HAVING AT LEAST BASE, EMITTER AND COLLECTOR ELECTRODES; FIRST MEANS TO COUPLE A FIRST OF SAID SIGNALS TO SAID BASE ELECTRODE OF EACH TRANSISTOR, THE SIGNAL APPEARING AT EACH OF SAID BASE ELECTRODES BEING SUBSTANTIALLY THE SAME; SECOND MEANS TO COUPLE THE SECOND OF SAID SIGNALS TO SAID COLLECTOR ELECTRODES OF EACH TRANSISTOR TO CONTROL THE COLLECTOR CURRENT OF SAID TRANSISTORS TO BE PROPORTIONAL TO SAID SECOND SIGNAL; AND OUTPUT MEANS COUPLED TO SAID COLLECTOR ELECTRODE OF EACH OF SAID TRANSISTORS TO PROVIDE AN OUTPUT VOLTAGE PROPORTIONAL TO THE PRODUCT OF SAID TWO SIGNALS.
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) | 1970-01-23 | 1970-07-25 | 1971-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-23 | 1974-07-25 | 1975-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-23 | 1978-07-25 | 1979-01-24 | $7700.00 | Window Closed / Lapsed |