Hiroshi Narai

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Fujisawa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Toroidal-type continuously variable transmission component and meth...
- Patent number 7,207,223
- Issue date Apr 24, 2007
- NSK Ltd.
- Hiroshi Narai
- G01 - MEASURING TESTING
Information Patent Grant
Thrust needle-shaped roller bearing, rolling bearing, and cage of t...
- Patent number 5,630,668
- Issue date May 20, 1997
- NSK Ltd.
- Katsuhiro Ikezawa
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Rolling/sliding part
- Patent number 5,611,250
- Issue date Mar 18, 1997
- NSK, Ltd.
- Hiroshi Narai
- C21 - METALLURGY OF IRON
Information Patent Grant
Rolling/sliding member
- Patent number 5,520,987
- Issue date May 28, 1996
- NSK, Ltd.
- Hiroshi Narai
- C21 - METALLURGY OF IRON
Information Patent Grant
Rolling bearing
- Patent number 5,415,705
- Issue date May 16, 1995
- NSK Ltd.
- Kyozaburo Furumura
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Bearing steel and rolling bearing made thereof
- Patent number 5,298,323
- Issue date Mar 29, 1994
- Nippon Seiko Kabushiki Kaisha
- Hiroshi Narai
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Bearing steel
- Patent number 5,256,213
- Issue date Oct 26, 1993
- NSK Ltd.
- Hiroshi Narai
- G01 - MEASURING TESTING

Patents Applicationslast 30 patents

Information Patent Application
Bearing steel,method for evaluating large-sized inclusions in the s...
- Publication number 20060048576
- Publication date Mar 9, 2006
- Akihiro Kiuchi
- G01 - MEASURING TESTING
Information Patent Application
Toroidal-type continuously variable transmission component and meth...
- Publication number 20040176210
- Publication date Sep 9, 2004
- NSK Ltd
- Hiroshi Narai
- G01 - MEASURING TESTING