US5153812A
Expired / Lapsed
US
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Composite LC element
Assignee: Mitsubishi Electric Corp
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Filing: 1990-06-15
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Granted: 1992-10-06
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Expires: 2010-06-15
Abstract
Abstract A composite LC element including integrally a coil and a capacitor which comprises a layered film structure wherein insulating films and electrode sheets with terminals at their both ends are alternately laminated, said layered film structure being wound in a spiral form from its one end. An intermediate electrode sheet having a shorter length and having a terminal at its one end may be interposed between said insulating films. Said electrode sheet may have an additional terminal at an intermediate portion.
Inventors
- 👤 Akira Naito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:35
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/02; H01F27/027; H03; H03H; H03H7/00; H03H7/01; H03H7/0115; H03H1/00; H03H2001/0021; H03H2001/0042; H03H2001/005
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
90 words
A composite LC element including integrally a coil and a capacitor which comprises a layered film structure which consists of a plurality of laminated layers, each comprising at least two electrode sheets having similar lengths and terminals at both ends, an intermediate electrode sheet with a terminal at its one side and having a length shorter than that of said electrode sheets and insulating films interposed between said electrode sheets and said intermediate electrode sheet wherein said layered film structure is wound in a spiral form from its one end.
Claim 2
Dependent Claim
90 words
A composite LC element including integrally a coil and a capacitor which comprises a layered film structure which consists of a plurality of laminated layers, each comprising at least two electrode sheets having similar lengths and terminals at both ends, an intermediate electrode sheet with a terminal at its one side and having a length shorter than that of said electrode sheets and insulating films interposed between said electrode sheets and said intermediate electrode sheet wherein said layered film structure is wound in a spiral form from its one end.
Claim 3
Dependent Claim
74 words
A composite LC element including integrally a coil and a capacitor which comprises a layered film structure formed by alternately laminating a plurality of insulating films and a plurality of electrode sheets of similar length each having terminals at both its ends and an intermediate portion, said layered film structure being wound in a spiral form from its one end, wherein said electrode sheets are electrically connected by connecting any one of said terminals.
Claim 4
Dependent Claim
74 words
A composite LC element including integrally a coil and a capacitor which comprises a layered film structure formed by alternately laminating a plurality of insulating films and a plurality of electrode sheets of similar length each having terminals at both its ends and an intermediate portion, said layered film structure being wound in a spiral form from its one end, wherein said electrode sheets are electrically connected by connecting any one of said terminals.
Claim 5
Dependent Claim
126 words
A composite LC element which comprises a layered film structure formed by alternately laminating a plurality of electrode sheets each having a terminal at least one end and a plurality of insulating films, said layered film structure being wound in a spiral form around a magnetic core from its one end so that a spiral coil is formed by each of said electrode sheets wound and a capacitor is formed by each adjacent pairs of said electrode sheets between which the insulating film is interposed, wherein selected paired electrodes interposing the insulating film therebetween is electrically connected to the other paired electrodes to form a plural-layered structure to increase the parasitic capacitance and decrease the inductance, said decrease in inductance being corrected by said magnetic core.
Claim 6
Dependent Claim
126 words
A composite LC element which comprises a layered film structure formed by alternately laminating a plurality of electrode sheets each having a terminal at least one end and a plurality of insulating films, said layered film structure being wound in a spiral form around a magnetic core from its one end so that a spiral coil is formed by each of said electrode sheets wound and a capacitor is formed by each adjacent pairs of said electrode sheets between which the insulating film is interposed, wherein selected paired electrodes interposing the insulating film therebetween is electrically connected to the other paired electrodes to form a plural-layered structure to increase the parasitic capacitance and decrease the inductance, said decrease in inductance being corrected by said magnetic core.
Claim 7
Dependent Claim
112 words
A composite LC element which comprises a layered film structure formed by alternately laminating a plurality of electrode sheets each having a terminal at least one end and a plurality of insulating films, said layered film structure being wound in a spiral form from its one end so that a spiral coil is formed by each of said electrode sheets wound and a capacitor is formed by each adjacent pairs of said electrode sheets between which the insulating film is interposed, wherein metallic films are formed on both surfaces of said interposed insulating films so that the metallic films are in contact with the electrode sheets which are adjacent said insulating films.
Claim 8
Dependent Claim
112 words
A composite LC element which comprises a layered film structure formed by alternately laminating a plurality of electrode sheets each having a terminal at least one end and a plurality of insulating films, said layered film structure being wound in a spiral form from its one end so that a spiral coil is formed by each of said electrode sheets wound and a capacitor is formed by each adjacent pairs of said electrode sheets between which the insulating film is interposed, wherein metallic films are formed on both surfaces of said interposed insulating films so that the metallic films are in contact with the electrode sheets which are adjacent said insulating films.
Claim 9
Dependent Claim
55 words
A composite LC element comprising a plurality of conductive layers which are wound around a magnetic core by interposing insulating films in a cylindrical form to thereby form a coil and a capacitor, wherein each of said conductive layers is formed by a ribbon line or a metallic foil having a large mat surface area.
Claim 10
Dependent Claim
55 words
A composite LC element comprising a plurality of conductive layers which are wound around a magnetic core by interposing insulating films in a cylindrical form to thereby form a coil and a capacitor, wherein each of said conductive layers is formed by a ribbon line or a metallic foil having a large mat surface area.
References Cited (Backward Citations)
US3210703A
Cited
US3638155A
Cited
US4368407A
Cited
JPS59139618A
Cited
US4945322A
Cited
US4866407A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-10-06 | 1996-04-06 | 1996-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-10-06 | 2000-04-06 | 2000-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-10-06 | 2004-04-06 | 2004-10-06 | $7700.00 | Window Closed / Lapsed |