Naoto Oonuma

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Hitachi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus and methods for detecting number of people waiting in an...
- Patent number 5,298,697
- Issue date Mar 29, 1994
- Hitachi, Ltd.
- Masato Suzuki
- B66 - HOISTING LIFTING HAULING
Information Patent Grant
Image processing apparatus having apparatus for correcting the imag...
- Patent number 5,182,776
- Issue date Jan 26, 1993
- Hitachi, Ltd.
- Masato Suzuki
- B66 - HOISTING LIFTING HAULING