Masaaki Torichigai

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Nagasaki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Insert type ultrasonic crack hunting apparatus
- Patent number 4,920,804
- Issue date May 1, 1990
- Mitsubishi Jukogyo Kabushiki Kaisha
- Keiichi Iwamoto
- G01 - MEASURING TESTING
Information Patent Grant
Cleaning system for a horizontal type tube assembly
- Patent number 4,907,542
- Issue date Mar 13, 1990
- The Kansai Electric Power Co., Inc.
- Takuzo Maeyama
- F28 - HEAT EXCHANGE IN GENERAL
Information Patent Grant
Automatic tube circumference scanning apparatus
- Patent number 4,879,973
- Issue date Nov 14, 1989
- The Kansai Electric Power Co., Inc.
- Takuzo Maeyama
- G01 - MEASURING TESTING
Information Patent Grant
Automated ultrasonic examination system for heat transfer tubes in...
- Patent number 4,872,347
- Issue date Oct 10, 1989
- Tokyo Electric Power Co.
- Yoshimi Okabe
- F28 - HEAT EXCHANGE IN GENERAL
Information Patent Grant
Cable insert nozzle
- Patent number 4,854,614
- Issue date Aug 8, 1989
- Mitsubishi Jukogyo Kabushiki Kaisha
- Masaaki Torichigai
- F22 - STEAM GENERATION
Information Patent Grant
Cable insertion nozzle
- Patent number 4,800,927
- Issue date Jan 31, 1989
- Mitsubishi Jukogyo Kabushiki Kaisha
- Masaaki Torichigai
- G01 - MEASURING TESTING