Inventor
OKAWA SHUICHI
JP34 patents
⚠️ This page may combine multiple inventors who share the name “OKAWA SHUICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TDK CORP
27 patentsUS7225528B2Jun 5, 2007
Method for manufacturing magnetic recording medium
TDK CORP27 citations92
US7741229B2Jun 22, 2010
Method for manufacturing magnetic recording medium
TDK CORP9 citations84
US7470374B2Dec 30, 2008
Manufacturing method and manufacturing apparatus of magnetic recording medium
TDK CORP13 citations84
US7417826B2Aug 26, 2008
Magnetic recording medium
TDK CORP12 citations84
US7247343B2Jul 24, 2007
Method for manufacturing magnetic recording medium
TDK CORP10 citations84
US7488429B2Feb 10, 2009
Method of dry etching, method of manufacturing magnetic recording medium, and magnetic recording medium
TDK CORP19 citations83
US7300595B2Nov 27, 2007
Method for filling concave portions of concavo-convex pattern and method for manufacturing magnetic recording medium
TDK CORP18 citations83
US7273563B2Sep 25, 2007
Method for manufacturing a magnetic recording medium
TDK CORP11 citations83
US6797415B2Sep 28, 2004
Cobalt-nickel-iron alloy thin film and method of forming the same, and thin-film magnetic head and method of manufacturing the same
TDK CORP10 citations73
US7636215B2Dec 22, 2009
Magnetic recording medium, recording/reproducing apparatus, and method of manufacturing a magnetic recording medium
TDK CORP2 citations63
US7630156B2Dec 8, 2009
Magnetic recording medium, recording/reproducing apparatus, and stamper for manufacturing a magnetic recording medium
TDK CORP3 citations63
US7538041B2May 26, 2009
Magnetic recording medium, method of manufacturing the same, and intermediate for magnetic recording medium
TDK CORP3 citations63
US7531103B2May 12, 2009
Mask forming method, mask forming functional layer, dry etching method, and method of manufacturing an information recording medium
TDK CORP2 citations63
US7480924B2Jan 20, 2009
Magnetic recording and reproducing device and magnetic recording medium
TDK CORP6 citations63
US7230795B2Jun 12, 2007
Recording medium having reduced surface roughness
TDK CORP2 citations63
US7125615B2Oct 24, 2006
Magnetic recording medium and magnetic recording device
TDK CORP4 citations63
US12467956B2Nov 11, 2025
Magnetic sensor
TDK CORP0 citations62
US7824584B2Nov 2, 2010
Method of manufacturing stamper, method of manufacturing resin molded article, and stamper
TDK CORP2 citations62
US7438982B2Oct 21, 2008
Magnetic recording medium including disk substrate, magnetic layer, and non-magnetic layer
TDK CORP6 citations62
US7378029B2May 27, 2008
Method for manufacturing magnetic recording medium
TDK CORP4 citations62
US7247251B2Jul 24, 2007
Method for manufacturing a magnetic recording medium
TDK CORP6 citations62
US7740903B2Jun 22, 2010
Method for manufacturing magnetic recording medium
TDK CORP1 citations52
US7682713B2Mar 23, 2010
Magnetic recording medium with recording layer having a predetermined concavo-convex pattern and magnetic recording and reproducing apparatus
TDK CORP1 citations52
US7541106B2Jun 2, 2009
Magnetic recording medium and magnetic recording/reproducing device
TDK CORP0 citations52
US7388215B2Jun 17, 2008
Pattern drawing method, stamper manufacturing method, and pattern drawing apparatus
TDK CORP0 citations52
US10890630B2Jan 12, 2021
Magnetic sensor
TDK CORP0 citations47
US7727412B2Jun 1, 2010
Dry etching method
TDK CORP0 citations42
UNIV NAT CORP TOKYO MEDICAL & DENTAL
4 patentsUS10952631B2Mar 23, 2021
Biomagnetism measurement device
UNIV NAT CORP TOKYO MEDICAL & DENTAL0 citations62
US11612368B2Mar 28, 2023
Biometric information measuring device
UNIV NAT CORP TOKYO MEDICAL & DENTAL0 citations61
US11647928B2May 16, 2023
Biomagnetism measuring device
UNIV NAT CORP TOKYO MEDICAL & DENTAL0 citations50
US11412945B2Aug 16, 2022
Muscle activity measurement device and muscle activity measurement method
UNIV NAT CORP TOKYO MEDICAL & DENTAL0 citations46