Yohei Ogawa

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Laser beam detecting device for a construction machine
- Patent number 6,665,067
- Issue date Dec 16, 2003
- Kabushiki Kaisha Topcon
- Yohei Ogawa
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Displacement measuring apparatus
- Patent number 6,442,862
- Issue date Sep 3, 2002
- Kabushiki Kaisha Topcon
- Kazuaki Kimura
- G01 - MEASURING TESTING
Information Patent Grant
Laser gradient setting device
- Patent number 5,839,199
- Issue date Nov 24, 1998
- Kabushiki Kaisha TOPCON
- Yohei Ogawa
- G01 - MEASURING TESTING
Information Patent Grant
Laser leveling system for setting pipes
- Patent number 5,774,211
- Issue date Jun 30, 1998
- Kabushiki Kaisha TOPCON
- Fumio Ohtomo
- G01 - MEASURING TESTING
Information Patent Grant
Laser gradient setting device
- Patent number 5,655,307
- Issue date Aug 12, 1997
- Kabushiki Kaisha TOPCON
- Yohei Ogawa
- G01 - MEASURING TESTING
Information Patent Grant
Object reflector detection system
- Patent number 5,612,781
- Issue date Mar 18, 1997
- Kabushiki Kaisha TOPCON
- Fumio Ohtomo
- G01 - MEASURING TESTING
Information Patent Grant
Laser gradient setting device
- Patent number 5,606,802
- Issue date Mar 4, 1997
- Kabushiki Kaisha TOPCON
- Yohei Ogawa
- G01 - MEASURING TESTING

Patents Applicationslast 30 patents

Information Patent Application
LEARNING APPARATUS, DETERMINATION SYSTEM, LEARNING METHOD, AND NON-...
- Publication number 20220327210
- Publication date Oct 13, 2022
- NEC Corporation
- Yohei OGAWA
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Laser beam detecting device for a construction machine
- Publication number 20020170210
- Publication date Nov 21, 2002
- Kabushiki Kaisha TOPCON
- Yohei Ogawa
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING