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Research and Development

Registration Number 5444104
Trademark registration “STREAM” -7- waterpower generator

Hydroelectic Power Device
Patent No.4817471
-Date of Patent:18th May,2011
Run-of-river ultra low head micro hydro turbine system comprised of vertical dual axes cross flow turbine and guide vanes to control water quantity

Hydroelectic Power Device
Patent No.4022244
-Date of Patent:6th April,2007
Run-of-river ultra low head micro hydro turbine system comprised of vertical dual axes cross flow turbine.

Water gate-style small hydroelectric generation system
Patent No.4134277
-Date of Patent:31 March,2008
Small hydroelectric generation system which utilizes head drop made by water level of the water gate.
Attached to the new/existing gate, it generates electricity with head drop made by opening and shutting of the water gate.

Small hydro power generation system with control gate for low head waterway
Patent No.4134277
-Date of Patent:31 March,2008
Small hydropower generation system which generates electricity with small head drop of waterway by catching water with control gate effectively.

The reclaimed water convey system which sprinks water to suppress the heat island phenomenon utilizing buried sewer
Patent No.4134278
-Date of Patent:31 March,2008
The reclaimed water convey system which sprinks water to suppress the heat island phenomenon utilizing buried sewer pipes .

Wind Turbine System for Generating Electricity from Wind Energy
Patent No. US 7,980,810 B2
-Date of Patent: Jul.19,2011
The wind-power generator that changes shape by change of the wind
A lift-type wind turbine having a substantially vertical rotating shaft and a plurality of substantially vertical blades secured to the shaft.

List of Patent Overseas

Hydro Power Generation System : No.4022244

Country Name Patent No.
Korea 10-2009-7002364
India 192/KOLNP/2009
Canada 2.683,450
The United States 12/444,782
Australia 2008239143
Brazil 0818273-1
China 200880000734.2
E.U. 8739869.9NO

Hydro Power Generation System : No.4022244

Country Name Patent No.
Korea 10-2012-7003014
Mexio MX/a/2012/003965
Russia 2012113641
Vietnam 1-2012-00910
The Philippines 1-2012-500539
Indonesia W00201201080
India 2560/DELNP/2012
Canada ——–
Taiwan 101101846
Country Name Patent No.
The United States 13/390,363
Australia 2011292911
Brazil BR1120120070681
Peru ——–
Malaysia PI2012001257
Laos PT185
Thailand 1201001516
Colombia 12-054353
China 201180002871.1
E.U. 11815430.1