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Tokyo, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Ionized gas current emission type dust-free ionizer
Patent number
7,397,647
Issue date
Jul 8, 2008
Techno Ryowa Ltd.
Akira Mizuno
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Ionized air flow discharge type non-dusting ionizer
Patent number
7,126,807
Issue date
Oct 24, 2006
Techno Ryowa Ltd.
Akira Mizuno
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Air ionizing apparatus and method
Patent number
5,847,917
Issue date
Dec 8, 1998
Techno Ryowa Co., Ltd.
Masanori Suzuki
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Method and apparatus for eliminating electric charges in a clean room
Patent number
5,296,018
Issue date
Mar 22, 1994
Techno Ryowa Co., Ltd.
Masanori Suzuki
B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES O...
Information
Patent Grant
Pulsed-DC ionizer
Patent number
5,249,094
Issue date
Sep 28, 1993
Asahi Glass Company Ltd.
Ichiya Hayakawa
H01 - BASIC ELECTRIC ELEMENTS