Patent US2721861A successfully refreshed from Google Patents.
US3286180A
Expired / Lapsed
US
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Electrical measuring apparatus for determining response time of transistors and the like
Assignee: E H RES LAB Inc
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Filing: 1962-06-22
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Granted: 1966-11-15
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Expires: 1982-06-22
Abstract
No abstract record available.
Inventors
- 👤 John C Hubbs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:31
CPC Classifications
G; G01; G01R; G01R31/00; G01R31/26; G01R31/2607; G01R31/2608; G01R31/2617; G01R29/00; G01R29/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
APPARATUS FOR DETERMINING CHARACTERISTICS PARAMETERS OF ELECTRICAL COMPONENTS, COMPRISING MEANS FOR SUPPLYING REPETITIVE ELECTRICAL INPUT SIGNAL PULSES HAVING A PREDETERMINED PULSE REPETITION PERIOD TO THE ELECTRICAL COMPONENT UNDER TEST, DISCRIMINATING MEANS CONNECTED TO SAID COMPONENT AND SERVING TO GENERATE AN OUTPUT SIGNAL WHEN THE SIGNAL OUTPUT OF SAID COMPONENT REACHES A PREDETERMINED VALUE, A LATCHING MEANS CONNECTED TO RECEIVE THE INPUT SIGNAL AND THE OUTPUT SIGNAL FROM THE DISCRIMINATOR, SAID INPUT SIGNAL SERVING TO TURN ON THE LATCHING MEANS TO PROVIDE A CONSTANT AMPLITUDE SIGNAL AND SAID DISCRIMINATOR OUTPUT SIGNAL SERVING TO TURN OFF THE LATCHING MEANS AND TERMINATE SUCH SIGNAL TO FORM A PULSE OF PREDETERMINED AMPLITUDE, MEANS CONNECTED TO SAID LATCHING MEANS RESPONSIVE TO SAID PULSE OF PREDETERMINED AMPLITUDE SERVING TO PROVIDE A SIGNAL PROPORTIONAL TO THE AVERAGE VALUE OF SAID PULSE OF PREDETERMINED AMPLITUDE OVER SAID PREDETERMINED REPETITION PERIOD, SUCH SIGNAL ALSO BEING PROPORTIONAL TO THE PERIOD DURING WHICH THE LATCHING MEANS IS TURNED ON.
Claim 2
Dependent Claim
158 words
APPARATUS FOR DETERMINING CHARACTERISTICS PARAMETERS OF ELECTRICAL COMPONENTS, COMPRISING MEANS FOR SUPPLYING REPETITIVE ELECTRICAL INPUT SIGNAL PULSES HAVING A PREDETERMINED PULSE REPETITION PERIOD TO THE ELECTRICAL COMPONENT UNDER TEST, DISCRIMINATING MEANS CONNECTED TO SAID COMPONENT AND SERVING TO GENERATE AN OUTPUT SIGNAL WHEN THE SIGNAL OUTPUT OF SAID COMPONENT REACHES A PREDETERMINED VALUE, A LATCHING MEANS CONNECTED TO RECEIVE THE INPUT SIGNAL AND THE OUTPUT SIGNAL FROM THE DISCRIMINATOR, SAID INPUT SIGNAL SERVING TO TURN ON THE LATCHING MEANS TO PROVIDE A CONSTANT AMPLITUDE SIGNAL AND SAID DISCRIMINATOR OUTPUT SIGNAL SERVING TO TURN OFF THE LATCHING MEANS AND TERMINATE SUCH SIGNAL TO FORM A PULSE OF PREDETERMINED AMPLITUDE, MEANS CONNECTED TO SAID LATCHING MEANS RESPONSIVE TO SAID PULSE OF PREDETERMINED AMPLITUDE SERVING TO PROVIDE A SIGNAL PROPORTIONAL TO THE AVERAGE VALUE OF SAID PULSE OF PREDETERMINED AMPLITUDE OVER SAID PREDETERMINED REPETITION PERIOD, SUCH SIGNAL ALSO BEING PROPORTIONAL TO THE PERIOD DURING WHICH THE LATCHING MEANS IS TURNED ON.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-14 | 1970-05-16 | 1970-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-14 | 1974-05-16 | 1974-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-14 | 1978-05-16 | 1978-11-15 | $7700.00 | Window Closed / Lapsed |