Yoshiaki Koga

Follow

Person

Yamaguchi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Method of treating fumed silica-containing drainage water
- Patent number 7,988,866
- Issue date Aug 2, 2011
- Tokuyama Corporation
- Shinji Tokunaga
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Method of treating silicon powder-containing drainage water
- Patent number 7,988,867
- Issue date Aug 2, 2011
- Tokuyama Corporation
- Shinji Tokunaga
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Method for producing paper and agent for improving yield
- Patent number 7,504,001
- Issue date Mar 17, 2009
- Seiko PMC Corporation
- Masanori Kosuga
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Process for preparing a flocculant for water treatment
- Patent number 7,338,617
- Issue date Mar 4, 2008
- Tokuyama Corporation
- Yoshiaki Koga
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

Patents Applicationslast 30 patents

Information Patent Application
Method of treating silicon powder-containing drainage water
- Publication number 20090242491
- Publication date Oct 1, 2009
- Shinji Tokunaga
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
Method of Treating Fumed Silica-Containing Drainage Water
- Publication number 20080264871
- Publication date Oct 30, 2008
- Tokuyana Corporation
- Shinji Tokunaga
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
Method for producing paper and agent for improving yield
- Publication number 20060011317
- Publication date Jan 19, 2006
- Masanori Kosuga
- C01 - INORGANIC CHEMISTRY
Information Patent Application
Apparatus for preparing a flocculant for water treatment
- Publication number 20050121377
- Publication date Jun 9, 2005
- TOKUYAMA CORPORATION
- Yoshiaki Koga
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Process for preparing a flocculant for water treatment
- Publication number 20030019815
- Publication date Jan 30, 2003
- TOKUYAMA CORPORATION
- Yoshiaki Koga
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL