US3230432A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drive circuit utilizing solid state devices
Assignee: International Business Machines Corp
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Filing: 1962-12-21
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Granted: 1966-01-18
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Expires: 1982-12-21
Abstract
No abstract record available.
Inventors
- 👤 Van C Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:36
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/51; H03K17/56; H03K17/72; H03K17/73
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A CIRCUIT FOR PROVIDING DRIVE PULSES COMPRISING, IN COMBINATION: (A) A PLURALITY OF SILICON CONTROLLED RECTIFIERS EACH HAVING TWO STABLE CONDUCTIVE STATES AND EACH INCLUDING A CATHODE, A GATE AND AN ANODE; (B) THE LAST OR OUTPUT RECTIFIER BEING CONNECTED IN A CATHODE FOLLOWER CONFIGURATION; (C) MEANS FOR PROVIDING AN INPUT SIGNAL TO CONTROL THE
Claim 2
Dependent Claim
55 words
A CIRCUIT FOR PROVIDING DRIVE PULSES COMPRISING, IN COMBINATION: (A) A PLURALITY OF SILICON CONTROLLED RECTIFIERS EACH HAVING TWO STABLE CONDUCTIVE STATES AND EACH INCLUDING A CATHODE, A GATE AND AN ANODE; (B) THE LAST OR OUTPUT RECTIFIER BEING CONNECTED IN A CATHODE FOLLOWER CONFIGURATION; (C) MEANS FOR PROVIDING AN INPUT SIGNAL TO CONTROL THE
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) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |