Keiichi Ochiai

Follow

Person

Hirakata, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Magnetic recording medium
- Patent number 5,501,896
- Issue date Mar 26, 1996
- Matsushita Electric Industrial Co., Ltd.
- Yasuhiro Ueyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium having a magnetic layer comprising hexago...
- Patent number 5,114,801
- Issue date May 19, 1992
- Matsushita Electric Industrial Co., Ltd.
- Nobuyuki Aoki
- G11 - INFORMATION STORAGE
Information Patent Grant
Perpendicular magnetic film of spinel type iron oxide compound and...
- Patent number 4,975,324
- Issue date Dec 4, 1990
- Matsushita Electric Industrial Co., Ltd.
- Hideo Torii
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Composite magnetic powder, method for producing the same and record...
- Patent number 4,957,812
- Issue date Sep 18, 1990
- Matsushita Electric Industrial Co., Ltd.
- Nobuyuki Aoki
- G11 - INFORMATION STORAGE
Information Patent Grant
Platelike magnetic powder and a recording medium which uses the pla...
- Patent number 4,886,714
- Issue date Dec 12, 1989
- Matsushita Electric Industrial Co., Ltd.
- Hideo Torii
- G11 - INFORMATION STORAGE