Iwao Matsuyama

Person

Hachioji, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Bearing and manufacturing method of bearing, and magnetic disk devi...
- Patent number 5,856,281
- Issue date Jan 5, 1999
- Hitachi, Ltd.
- Masaki Otsuka
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Process for producing a rigid magnetic disk by longitudinally gener...
- Patent number 5,180,608
- Issue date Jan 19, 1993
- Hitachi, Ltd.
- Katsuyoshi Chiba
- G11 - INFORMATION STORAGE
Information Patent Grant
Hard disk magnetic recording medium comprising magnetic powder and...
- Patent number 5,180,616
- Issue date Jan 19, 1993
- Hitachi, Ltd.
- Hajime Fukke
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Method for magnetic orientation of magnetic recording medium using...
- Patent number 5,034,243
- Issue date Jul 23, 1991
- Hitachi, Ltd.
- Katsuyoshi Chiba
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic coated recording medium and method of manfacturing the same
- Patent number 5,028,496
- Issue date Jul 2, 1991
- Hitachi, Ltd.
- Yasutaro Uesaka
- G11 - INFORMATION STORAGE
Information Patent Grant
Process for producing optical glass
- Patent number 4,426,216
- Issue date Jan 17, 1984
- Hitachi, Ltd.
- Shin Satoh
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Method for producing optical glass
- Patent number 4,324,576
- Issue date Apr 13, 1982
- Hitachi, Ltd.
- Iwao Matsuyama
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Method for producing mother rods for optical fibers
- Patent number 4,323,381
- Issue date Apr 6, 1982
- Hitachi, Ltd.
- Iwao Matsuyama
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Method for producing silica glass
- Patent number 4,317,668
- Issue date Mar 2, 1982
- Hitachi, Ltd.
- Kenzo Susa
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Method for producing optical fiber preform
- Patent number 4,259,101
- Issue date Mar 31, 1981
- Hitachi, Ltd.
- Yasuo Tsukuda
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Pulse generator
- Patent number 4,119,886
- Issue date Oct 10, 1978
- Hitachi, Ltd.
- Shigeru Jyomura
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES

Iwao Matsuyama

Person

Patents Grantslast 30 patents

Bearing and manufacturing method of bearing, and magnetic disk devi...

Process for producing a rigid magnetic disk by longitudinally gener...

Hard disk magnetic recording medium comprising magnetic powder and...

Method for magnetic orientation of magnetic recording medium using...

Magnetic coated recording medium and method of manfacturing the same

Process for producing optical glass

Method for producing optical glass

Method for producing mother rods for optical fibers

Method for producing silica glass

Method for producing optical fiber preform

Pulse generator