Katsuharu Uehara

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Tochigi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus for assembling fins and tubes for heat exchangers
- Patent number 4,698,904
- Issue date Oct 13, 1987
- Hitachi, Ltd.
- Yoshio Nozawa
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Tube-enlarging press for use in heat exchanger fabrication
- Patent number 4,597,171
- Issue date Jul 1, 1986
- Hitachi, Ltd.
- Yukio Kitayama
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Method of stacking fins of heat exchangers
- Patent number 4,566,359
- Issue date Jan 28, 1986
- Hitachi, Ltd.
- Masahiro Miyagi
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...