Inventor
KATO KEIZO
JP21 patents
⚠️ This page may combine multiple inventors who share the name “KATO KEIZO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
7 patentsUS5296995AMar 22, 1994
Method of magnetically recording and reading data, magnetic recording medium, its production method and magnetic recording apparatus
HITACHI LTD58 citations95
US5338178AAug 16, 1994
Embossing metal hold
HITACHI LTD30 citations92
US5330880AJul 19, 1994
Process for producing optical disks
HITACHI LTD35 citations92
US4348461ASep 7, 1982
Recording member
HITACHI LTD7 citations74
US4223187ASep 16, 1980
Method and apparatus for recording and reproducing a video-disc with an oscillated track
HITACHI LTD17 citations73
US5295121AMar 15, 1994
Magneto-optic recording/reproducing method and device and magneto-optic recording medium used for them
HITACHI LTD4 citations63
US4241240ADec 23, 1980
Optical information recording apparatus
HITACHI LTD3 citations62
FUJITSU LTD
6 patentsUS11210513B2Dec 28, 2021
Detection method and detection device
FUJITSU LTD2 citations73
US10236979B2Mar 19, 2019
Transmitter, receiver, communication system, and transmission and reception methods
FUJITSU LTD2 citations73
US10075239B2Sep 11, 2018
Reproduction device, method, storage medium, and system
FUJITSU LTD2 citations73
US9865028B2Jan 9, 2018
Information detecting device, information detecting system, and information detecting method
FUJITSU LTD0 citations52
US10523365B2Dec 31, 2019
Discrimination method and communication system
FUJITSU LTD0 citations41
US10460414B2Oct 29, 2019
Digital watermark information detecting device and digital watermark information detecting method
FUJITSU LTD0 citations41