Koichi Matsumoto

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Hitachi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Light measuring device avoiding influence of fluorescence or phosph...
- Patent number 6,839,134
- Issue date Jan 4, 2005
- Hitachi, Ltd.
- Michihiro Saito
- G01 - MEASURING TESTING
Information Patent Grant
Wavelength reading apparatus for monochromator
- Patent number 4,203,669
- Issue date May 20, 1980
- Hitachi, Ltd.
- Yoshio Maeda
- G01 - MEASURING TESTING
Information Patent Grant
Spectrophotometers with digital processing
- Patent number 4,180,327
- Issue date Dec 25, 1979
- Hitachi, Ltd.
- Yoshio Maeda
- G01 - MEASURING TESTING
Information Patent Grant
Method and apparatus for optically analyzing specimen by using two...
- Patent number 4,176,957
- Issue date Dec 4, 1979
- Hitachi, Ltd.
- Yoshio Maeda
- G01 - MEASURING TESTING
Information Patent Grant
Control apparatus for driving a pulse motor
- Patent number 4,145,643
- Issue date Mar 20, 1979
- Hitachi, Ltd.
- Yoshio Maeda
- G05 - CONTROLLING REGULATING
Information Patent Grant
Monochromator combining a plurality of light dispersing elements
- Patent number 4,102,576
- Issue date Jul 25, 1978
- Hitachi, Ltd.
- Yoshio Maeda
- G01 - MEASURING TESTING

Patents Applicationslast 30 patents

Information Patent Application
Method and system for supplying management and maintenance parts
- Publication number 20040064381
- Publication date Apr 1, 2004
- Hitachi, Ltd.
- Yuichiro Mizumachi
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Light measuring device
- Publication number 20030133107
- Publication date Jul 17, 2003
- Michihiro Saito
- G01 - MEASURING TESTING
Information Patent Application
Method and system for supplying management and maintenance parts
- Publication number 20020055893
- Publication date May 9, 2002
- Yuichiro Mizumachi
- G06 - COMPUTING CALCULATING COUNTING