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US4571561A Expired / Lapsed US ⏱️ 0.0 years remaining

Noise reduction filter

Assignee: Murata Manufacturing Co Ltd
•
Filing: 1984-08-29
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Granted: 1986-02-18
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Expires: 2004-08-29
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Abstract

Abstract A noise reduction filter which comprises a block of magnetizable material, and first and second laminated capacitors each having first and second terminal electrodes opposite to each other. The first and second capacitors are mounted on one surface of the block with the second terminal electrodes of the respective first and second capacitors spacedly confronting with each other. The filter also comprises a first electrode member partially extending through the block with its opposite end portions connected to the first terminal electrodes of the respective first and second capacitors, and a second electrode member mounted on the block with a portion thereof electrically connecting the second terminal electrodes of the respective first and second capacitors together.

Inventors

  • 👤 Yasuo Fujiki
  • 👤 Toshio Hori

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 13:49
CPC Classifications
H; H03; H03H; H03H1/00; H03H1/0007; H04; H04B; H04B15/00

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 150 words
A noise reduction filter which comprises a block of magnetizable material, first and second capacitors each having first and second terminal electrodes opposite to each other, said first and second capacitors being mounted on one surface of the block with the second terminal electrodes of the respective first and second capacitors confronting with each other, a first electrode member in the form of a strip partially extending through the block with its opposite end portions being connected to the first terminal electrodes of the respective first and second capacitors, and a second electrode member in the form of a strip mounted on the block with a portion thereof electrically connecting the second terminal electrodes of the respective first and second capacitors together, wherein said block has a single through-hole defined therein, a substantially intermediate portion of said first electrode member between said opposite end portions thereof extending through said through-hole.
Claim 2
Dependent Claim 150 words
A noise reduction filter which comprises a block of magnetizable material, first and second capacitors each having first and second terminal electrodes opposite to each other, said first and second capacitors being mounted on one surface of the block with the second terminal electrodes of the respective first and second capacitors confronting with each other, a first electrode member in the form of a strip partially extending through the block with its opposite end portions being connected to the first terminal electrodes of the respective first and second capacitors, and a second electrode member in the form of a strip mounted on the block with a portion thereof electrically connecting the second terminal electrodes of the respective first and second capacitors together, wherein said block has a single through-hole defined therein, a substantially intermediate portion of said first electrode member between said opposite end portions thereof extending through said through-hole.
Claim 3
Dependent Claim 25 words
A filter as claimed in claim 1, wherein said one surface of the block is inwardly recessed for accommodating therein the first and second capacitors.
Claim 4
Dependent Claim 75 words
A filter as claimed in claim 1, wherein the block has first and second through-holes defined therein in parallel relation to each other and also a slit defined therein so as to extend intermediately between the first and second through-holes, said first electrode member being shaped to represent a generally U-shaped configuration extending through the first through-hole, then exteriorly of the block at a position opposite to the capacitors and finally through the second through-hole.
Claim 5
Dependent Claim 127 words
A noise reduction filter which comprises a block of magnetizable material, first and second capacitors each having first and second terminal electrodes opposite to each other, said first and second capacitors being mounted on one surface of the block with the second terminal electrodes of the respective first and second capacitors confronting with each other, a first electrode member partially extending through the block with its opposite end portions being connected to the first terminal electrodes of the respective first and second capacitors, and a second electrode member mounted on the block with a portion thereof electrically connecting the second terminal electrodes of the respective first and second capacitors together, said one surface of said block being inwardly recessed for accommodating therein said first and second capacitors.
Claim 6
Dependent Claim 127 words
A noise reduction filter which comprises a block of magnetizable material, first and second capacitors each having first and second terminal electrodes opposite to each other, said first and second capacitors being mounted on one surface of the block with the second terminal electrodes of the respective first and second capacitors confronting with each other, a first electrode member partially extending through the block with its opposite end portions being connected to the first terminal electrodes of the respective first and second capacitors, and a second electrode member mounted on the block with a portion thereof electrically connecting the second terminal electrodes of the respective first and second capacitors together, said one surface of said block being inwardly recessed for accommodating therein said first and second capacitors.
Claim 7
Dependent Claim 176 words
A noise reduction filter which comprises a block of magnetizable material, first and second capacitors each having first and second terminal electrodes opposite to each other, said first and second capacitors being mounted on one surface of the block with the second terminal electrodes of the respective first and second capacitors confronting with each other, a first electrode member partially extending through the block with its opposite end portions being connected to the first terminal electrodes of the respective first and second capacitors, and a second electrode member mounted on the block with a portion thereof electrically connecting the second terminal electrodes of the respective first and second capacitors together, said block having first and second through-holes defined therein parallel relation to each other and also a slit defined therein so as to extend intermediately between said first and second through-holes, said first electrode member being shaped to represent a generally U-shaped configuration extending through said first through-hole, then exteriorly of said block at a position opposite to the capacitors and finally through said second through-hole.
Claim 8
Dependent Claim 176 words
A noise reduction filter which comprises a block of magnetizable material, first and second capacitors each having first and second terminal electrodes opposite to each other, said first and second capacitors being mounted on one surface of the block with the second terminal electrodes of the respective first and second capacitors confronting with each other, a first electrode member partially extending through the block with its opposite end portions being connected to the first terminal electrodes of the respective first and second capacitors, and a second electrode member mounted on the block with a portion thereof electrically connecting the second terminal electrodes of the respective first and second capacitors together, said block having first and second through-holes defined therein parallel relation to each other and also a slit defined therein so as to extend intermediately between said first and second through-holes, said first electrode member being shaped to represent a generally U-shaped configuration extending through said first through-hole, then exteriorly of said block at a position opposite to the capacitors and finally through said second through-hole.

References Cited (Backward Citations)

GB818775A Cited
US3593217A Cited
US4516092A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1989-02-17 1989-08-19 1990-02-18 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1993-02-17 1993-08-19 1994-02-18 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1997-02-17 1997-08-19 1998-02-18 $7700.00 Window Closed / Lapsed

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