US5367275A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminate LC filter having combined condenser and coil functions
Assignee: Mitsubishi Electric Corp
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Filing: 1993-03-05
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Granted: 1994-11-22
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Expires: 2013-03-05
Abstract
Abstract An LC filter is provided which includes a first conductive sheet, a first dielectric sheet laminated on the first conductive sheet, a second conductive sheet laminated on the first dielectric sheet, a second dielectric sheet laminated on the second conductive sheet, a third conductive sheet laminated on the second dielectric sheet, and a third dielectric sheet laminated on a third conductive sheet formed as an integral body which has the first, the second and the third conductive sheets and the first, the second and the third dielectric sheets, are coiled. The first and the second conductive sheets are respectively provided with input terminals and output terminals.
Inventors
- 👤 Mitsunobu Esaki
- 👤 Shigefumi Kimura
- 👤 Chiharu Miyazaki
- 👤 Sunao Hiraki
- 👤 Katsumi Tomiyama
- 👤 Naoto Oka
- 👤 Hironobu Tsutsumi
- 👤 Sachio Igawa
- 👤 Toshio Ootake
- 👤 Mitsuhiko Kanda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:15
CPC Classifications
H; H03; H03H; H03H7/00; H03H7/01; H03H7/0115; H03H1/00; H03H1/0007; H03H2001/0021; H03H2001/005; H03H2001/0085
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
An LC filter which comprises: at least two conductive sheets each having a first opening provided at a central portion of the conductive sheet, cut-off portions provided from the first opening to a periphery of each of the conductive sheets, each of said conductive sheets including first and second terminals consisting of first and second projections disposed in the same plane and formed by said cut-off portion; and at least one dielectric film having a second opening with a width substantially equal to the width of said terminals of said conductive sheets, for connecting the conductive sheets situated above and below said dielectric film.
Claim 2
Dependent Claim
104 words
An LC filter which comprises: at least two conductive sheets each having a first opening provided at a central portion of the conductive sheet, cut-off portions provided from the first opening to a periphery of each of the conductive sheets, each of said conductive sheets including first and second terminals consisting of first and second projections disposed in the same plane and formed by said cut-off portion; and at least one dielectric film having a second opening with a width substantially equal to the width of said terminals of said conductive sheets, for connecting the conductive sheets situated above and below said dielectric film.
References Cited (Backward Citations)
CH227714A
Cited
US4367450A
Cited
EP0396516A1
Cited
US5153812A
Cited
EP0428907A1
Cited
US5010314A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-11-21 | 1998-05-23 | 1998-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-11-21 | 2002-05-23 | 2002-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-11-21 | 2006-05-23 | 2006-11-22 | $7700.00 | Window Closed / Lapsed |