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Kyohei Matsushita
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Fuji-shi, JP
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Patents Grants
last 30 patents
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Patent Grant
Heat exchanging unit, heat exchanging apparatus, and hot water supp...
Patent number
11,739,980
Issue date
Aug 29, 2023
PURPOSE CO., LTD.
Toshiaki Aoki
F28 - HEAT EXCHANGE IN GENERAL
Information
Patent Grant
Filter device and water heater
Patent number
11,103,818
Issue date
Aug 31, 2021
PURPOSE CO., LTD.
Toshiaki Aoki
F24 - HEATING RANGES VENTILATING
Patents Applications
last 30 patents
Information
Patent Application
HEAT EXCHANGING UNIT, HEAT EXCHANGING APPARATUS, AND HOT WATER SUPP...
Publication number
20200064020
Publication date
Feb 27, 2020
PURPOSE CO., LTD.
Toshiaki Aoki
F24 - HEATING RANGES VENTILATING
Information
Patent Application
FILTER DEVICE AND WATER HEATER
Publication number
20190126179
Publication date
May 2, 2019
PURPOSE CO., LTD.
Toshiaki Aoki
F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES