Patent US3588664A successfully refreshed from Google Patents.
US3588664A
Expired / Lapsed
US
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Multiphase dc chopper circuit
Assignee: Mitsubishi Electric Corp
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Filing: 1969-04-01
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Granted: 1971-06-28
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Expires: 1989-04-01
Abstract
Abstract A REACTOR INCLUDES WINDINGS CONNECTED BETWEEN THYRISTORTYPE CHOPPERS AND A LOAD. THE WINDINGS ARE MAGNETICALLY COUPLED WITH ONE ANOTHER SO AS TO MAINTAIN FLOWS OF CURRENT THERETHROUGH SUBSTANTIALLY EQUAL IN MAGNITUDE TO ONE ANOTHER.
Inventors
- 👤 Masahiko Akamatsu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:27
CPC Classifications
H; H02; H02M; H02M3/00; H02M3/02; H02M3/04; H02M3/10; H02M3/145; H02M3/155; H02M3/156; H02M3/158; H02M3/1584
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |