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Degradable downhole plug
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Patent number 11,346,178
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Issue date May 31, 2022
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Kureha Corporation
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Shinya Takahashi
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E21 - EARTH DRILLING MINING
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Method for washing reactor
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Patent number 10,076,773
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Issue date Sep 18, 2018
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Japan Oil, Gas and Metals National Corporation
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Shinya Takahashi
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Inkjet printing apparatus
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Patent number 9,931,860
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Issue date Apr 3, 2018
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Konica Minolta, Inc.
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Hiroyuki Tokimatsu
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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