Tsutomu Onuma

Person

Hitachi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Underwater laser processing device including chamber with partition...
- Patent number 5,977,515
- Issue date Nov 2, 1999
- Hitachi, Ltd.
- Keiichi Uraki
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Submerged laser beam irradiation equipment
- Patent number 5,938,954
- Issue date Aug 17, 1999
- Hitachi, Ltd.
- Tsutomu Onuma
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Stainless steel type 13Cr5Ni having high toughness, and usage of th...
- Patent number 5,879,132
- Issue date Mar 9, 1999
- Hitachi, Ltd.
- Kenichi Usami
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Method of repairing structural materials of nuclear reactor interna...
- Patent number 5,654,992
- Issue date Aug 5, 1997
- Hitachi, Ltd.
- Keiichi Uraki
- G21 - NUCLEAR PHYSICS NUCLEAR ENGINEERING
Information Patent Grant
Method of welding a carbon steel and an austenitic stainless steel...
- Patent number 5,628,449
- Issue date May 13, 1997
- Hitachi, Ltd.
- Tsutomu Onuma
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Stainless steel type 13Cr5Ni having high toughness, and usage the same
- Patent number 5,601,411
- Issue date Feb 11, 1997
- Hitachi, Ltd.
- Kenichi Usami
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Welded structural member having high erosion resistance
- Patent number 4,499,158
- Issue date Feb 12, 1985
- Hitachi, Ltd.
- Tsutomu Onuma
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Welded structure having improved mechanical strength and process fo...
- Patent number 4,348,131
- Issue date Sep 7, 1982
- Hitachi, Ltd.
- Shizuka Shimanuki
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR

Tsutomu Onuma

Person

Patents Grantslast 30 patents

Underwater laser processing device including chamber with partition...

Submerged laser beam irradiation equipment

Stainless steel type 13Cr5Ni having high toughness, and usage of th...

Method of repairing structural materials of nuclear reactor interna...

Method of welding a carbon steel and an austenitic stainless steel...

Stainless steel type 13Cr5Ni having high toughness, and usage the same

Welded structural member having high erosion resistance

Welded structure having improved mechanical strength and process fo...