Yu Koiwa

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Kanagawa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Rolling bearing and spindle apparatus for machine tool
- Patent number RE48843
- Issue date Dec 7, 2021
- NSK Ltd.
- Naoki Matsuyama
Information Patent Grant
Rolling bearing and spindle apparatus for machine tool
- Patent number 6,742,934
- Issue date Jun 1, 2004
- NSK Ltd.
- Naoki Matsuyama
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Bearing unit
- Patent number 6,733,181
- Issue date May 11, 2004
- NSK Ltd.
- Yu Koiwa
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Lubrication system for rolling bearing
- Patent number 6,443,623
- Issue date Sep 3, 2002
- NSK Ltd.
- Sumio Sugita
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

Information Patent Application
Bearing unit
- Publication number 20020102040
- Publication date Aug 1, 2002
- Yu Koiwa
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
Rolling bearing and spindle apparatus for machine tool
- Publication number 20020097939
- Publication date Jul 25, 2002
- NSK Ltd
- Naoki Matsuyama
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
Lubrication system for rolling bearing
- Publication number 20020009245
- Publication date Jan 24, 2002
- Sumio Sugita
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...