US3139535A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable pulse width circuit
Assignee: NEC Corp
•
Filing: 1961-04-04
•
Granted: 1964-06-30
•
Expires: 1981-04-04
Abstract
No abstract record available.
Inventors
- 👤 Saito Kunishiro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:34
CPC Classifications
H; H03; H03K; H03K7/00; H03K7/08; H03K3/00; H03K3/02; H03K3/45
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A CIRCUIT WHICH RESPONDS TO INPUT PULSES AND SUPPLIES OUTPUT PULSES HAVING A TIME DURATION WHICH IS SELECTIVELY VARIABLE, SAID CIRCUIT COMPRISING A UNILATERAL CONDUCTING DEVICE INCLUDING FIRST, SECOND AND THIRD ELECTRODES, A FIRST SOURCE OF CURRENT COUPLED BETWEEN SAID FIRST AND SECOND ELECTRODES, A SECOND SOURCE OF CURRENT COUPLED BETWEEN SAID SECOND AND THIRD ELECTRODES, A VARIABLE TIME CONSTANT NETWORK CONNECTED BETWEEN SAID SECOND AND THIRD ELECTRODES, SAID NETWORK COMPRISING A CAPACITIVE ELEMENT HAVING FIRST, SECOND AND THIRD TERMINALS, THE FIRST AND SECOND TERMINALS OF SAID CAPACITIVE ELEMENT BEING CONNECTED TO THE RESPECTIVE SECOND AND THIRD ELECTRODES OF SAID UNILATERAL CONDUCTING DEVICE, MEANS COUPLED TO THE THIRD TERMINAL OF SAID CAPACITIVE ELEMENT
Claim 2
Dependent Claim
113 words
A CIRCUIT WHICH RESPONDS TO INPUT PULSES AND SUPPLIES OUTPUT PULSES HAVING A TIME DURATION WHICH IS SELECTIVELY VARIABLE, SAID CIRCUIT COMPRISING A UNILATERAL CONDUCTING DEVICE INCLUDING FIRST, SECOND AND THIRD ELECTRODES, A FIRST SOURCE OF CURRENT COUPLED BETWEEN SAID FIRST AND SECOND ELECTRODES, A SECOND SOURCE OF CURRENT COUPLED BETWEEN SAID SECOND AND THIRD ELECTRODES, A VARIABLE TIME CONSTANT NETWORK CONNECTED BETWEEN SAID SECOND AND THIRD ELECTRODES, SAID NETWORK COMPRISING A CAPACITIVE ELEMENT HAVING FIRST, SECOND AND THIRD TERMINALS, THE FIRST AND SECOND TERMINALS OF SAID CAPACITIVE ELEMENT BEING CONNECTED TO THE RESPECTIVE SECOND AND THIRD ELECTRODES OF SAID UNILATERAL CONDUCTING DEVICE, MEANS COUPLED TO THE THIRD TERMINAL OF SAID CAPACITIVE ELEMENT
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) | 1967-06-30 | 1967-12-30 | 1968-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-30 | 1971-12-30 | 1972-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-30 | 1975-12-30 | 1976-06-30 | $7700.00 | Window Closed / Lapsed |