Membership
Tour
Register
Log in
Tetsushi Ohtsuka
Follow
Person
Saitama, JP
People
Overview
Industries
Organizations
People
Information
Impact
Patents Grants
last 30 patents
Information
Patent Grant
Single stage root type-vacuum pump and vacuum fluid transport syste...
Patent number
7,950,911
Issue date
May 31, 2011
Sekisui Chemical Co., Ltd.
Tetsushi Ohtsuka
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Vacuum-operated sewage system and air inlet valve
Patent number
6,298,870
Issue date
Oct 9, 2001
Sekisui Chemical Co., Ltd.
Tetsushi Ohtsuka
E03 - WATER SUPPLY SEWERAGE
Information
Patent Grant
Vacuum valve control device and vacuum valve
Patent number
5,918,853
Issue date
Jul 6, 1999
Seikisui Kagaku Kogyo Kabushiki Kaisha
Yasuo Yamabe
G05 - CONTROLLING REGULATING
Information
Patent Grant
Vacuum valve control device and vacuum valve
Patent number
5,615,701
Issue date
Apr 1, 1997
Sekisui Kagaku Kogyo Kabushiki Kaisha
Yasuo Yamabe
G05 - CONTROLLING REGULATING
Patents Applications
last 30 patents
Information
Patent Application
Single Stage Root Type-Vacuum Pump and Vacuum Fluid Transport Syste...
Publication number
20090004039
Publication date
Jan 1, 2009
Tetsushi Ohtsuka
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES