Kiyoshi Yamakawa

Follow

Person

Kanagawa, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Video tape recorder monitors recording errors and rerecords video s...
- Patent number 5,402,271
- Issue date Mar 28, 1995
- Sony Corporation
- Kozo Kaminaga
- G11 - INFORMATION STORAGE
Information Patent Grant
Video tape that records, plays back, and rerecords video signals to...
- Patent number 5,343,334
- Issue date Aug 30, 1994
- Sony Corporation
- Kozo Kaminaga
- G11 - INFORMATION STORAGE
Information Patent Grant
Planar thin film magnetic head
- Patent number 5,274,521
- Issue date Dec 28, 1993
- Sony Corporation
- Teiichi Miyauchi
- G11 - INFORMATION STORAGE