Noriyuki Tsushima

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Patents Grantslast 30 patents

Information Patent Grant
Rolling bearings and methods of producing the same
- Patent number 6,048,414
- Issue date Apr 11, 2000
- NTN Corporation
- Noriyuki Tsushima
- C21 - METALLURGY OF IRON
Information Patent Grant
Bearing steel part for rolling bearing
- Patent number 5,954,894
- Issue date Sep 21, 1999
- NTN Corporation
- Noriyuki Tsushima
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Rolling contact bearing and a method of producing thereof
- Patent number 5,658,082
- Issue date Aug 19, 1997
- NTN Corporation
- Noriyuki Tsushima
- C21 - METALLURGY OF IRON
Information Patent Grant
Bearing race member and method of fabrication
- Patent number 4,992,111
- Issue date Feb 12, 1991
- NTN Corporation
- Hiroshi Yamada
- C21 - METALLURGY OF IRON
Information Patent Grant
Rolling bearing
- Patent number 4,696,581
- Issue date Sep 29, 1987
- NTN Toyo Bearing Co., Ltd.
- Noriyuki Tsushima
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Method of producing split bearing rings
- Patent number 4,541,157
- Issue date Sep 17, 1985
- NTN Toyo Bearing Co., Ltd.
- Noriyuki Tsushima
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...