
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 |