Chang Min Tech Co., Ltd.

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Sungnam, KR

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Patents Grantslast 30 patents

Information Patent Grant
Ultrasonic flow velocity measuring method
- Patent number 6,470,757
- Issue date Oct 29, 2002
- Chang Min Tech Co., Ltd.
- Hak Soo Chang
- G01 - MEASURING TESTING
Information Patent Grant
Ultrasonic flow velocity measuring apparatus
- Patent number 6,435,038
- Issue date Aug 20, 2002
- Chang Min Tech Co., Ltd.
- Sang-Yong Nam
- G01 - MEASURING TESTING
Information Patent Grant
Ultrasonic flow velocity measuring method using phase difference me...
- Patent number 6,386,047
- Issue date May 14, 2002
- Chang Min Tech Co., Ltd.
- Hak Soo Chang
- G01 - MEASURING TESTING
Information Patent Grant
Ultrasonic flow velocity measuring apparatus
- Patent number 6,012,338
- Issue date Jan 11, 2000
- Chang Min Tech Co., Ltd.
- Hak Soo Chang
- G01 - MEASURING TESTING
Information Patent Grant
Method of measuring a river horizontal average flow velocity
- Patent number 5,952,583
- Issue date Sep 14, 1999
- Chang Min Tech Co., Ltd.
- Hak Soo Chang
- G01 - MEASURING TESTING