Hidetaro KAYANUMA

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Screw rotor processing method and screw rotor lead correction calcu...
- Patent number 11,890,721
- Issue date Feb 6, 2024
- HITACHI-JOHNSON CONTROLS AIR CONDITIONING, INC.
- Toshio Yamanaka
- B24 - GRINDING POLISHING

Patents Applicationslast 30 patents

Information Patent Application
SCREW ROTOR PROCESSING METHOD AND SCREW ROTOR LEAD CORRECTION CALCU...
- Publication number 20190283207
- Publication date Sep 19, 2019
- Hitachi-Johnson Controls Air Conditioning, Inc.
- Toshio YAMANAKA
- B24 - GRINDING POLISHING