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Title:
BALL FOR CHECK VALVES
Document Type and Number:
WIPO Patent Application WO/2022/114144
Kind Code:
A1
Abstract:
A ball for check valves according to the present disclosure comprises: a spherical body that is mainly composed of tungsten or platinum; and a film that is positioned on the surface of the spherical body, while being mainly composed of a metal compound.

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Inventors:
OTA SHOICHI (JP)
Application Number:
PCT/JP2021/043463
Publication Date:
June 02, 2022
Filing Date:
November 26, 2021
Export Citation:
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Assignee:
KYOCERA CORP (JP)
International Classes:
C22C5/04; C22C27/04; F16K15/04; G01N30/32
Foreign References:
JP2003207001A2003-07-25
CN111306328A2020-06-19
KR20040026084A2004-03-27
JP2004027868A2004-01-29
JP2011027046A2011-02-10
JP2007092829A2007-04-12
JP2003301901A2003-10-24
Attorney, Agent or Firm:
BUNA PATENT ATTORNEYS (JP)
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