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HIRATA KEI

Overview
  • Total Patents
    16
About

HIRATA KEI has a total of 16 patent applications. Its first patent ever was published in 2007. It filed its patents most often in United States. Its main competitors in its focus markets audio-visual technology, micro-structure and nano-technology and machines are GAO KAIZHONG, HITACHI GLOBAL TECH NL BV and READ RITE CORP.

Patent filings in countries

World map showing HIRATA KEIs patent filings in countries
# Country Total Patents
#1 United States 16

Patent filings per year

Chart showing HIRATA KEIs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Hirata Kei 16
#2 Anagawa Kenkichi 4
#3 Kagami Takeo 4
#4 Roppongi Tetsuya 3
#5 Watanabe Hisayoshi 3
#6 Tanaka Kosuke 3
#7 Nishiyama Michitaka 2
#8 Ukita Hideyuki 2
#9 Yatsu Hideyuki 2
#10 Miura Satoshi 2

Latest patents

Publication Filing date Title
US2014043948A1 Plasmon generator and thermally-assisted magnetic recording head having the same
US2013229730A1 Thermally-assisted magnetic recording head including a magnetic pole and a heating element
US2013215725A1 Thermally assisted magnetic head, magnetic head device and magnetic recording/reproducing apparatus including a recording element and a near-field light generating element
US2012236431A1 Magnetic recording device and magnetic recording method
US2012026629A1 Magnetic head and method of manufacture thereof wherein the head includes a pole layer and non-magnetic layer having a continuous tapered face opposed to a trailing shield
US2012020147A1 Magnetic memory element, magnetic memory device, information recording/reproducing apparatus
US2011304939A1 Magnetic recording device, magnetic recording method and magnetic recording medium for shingle write scheme
US2011216443A1 Perpendicular magnetic write head with side shield saturation magnetic flux density increasing away from magnetic pole
US2011157746A1 Perpendicular magnetic recording head and magnetic recording device
US2011090595A1 Magnetic head for perpendicular magnetic recording and method of manufacturing same
US2010302680A1 Perpendicular magnetic write head and magnetic write device
US2010053819A1 Thin film magnetic head, magnetic head slider, head gimbal assembly, head arm assembly, magnetic disk device and method of manufacturing thin film magnetic head
US2009323222A1 Thin film magnetic head having similarly structured resistive film pattern and magnetic bias layer
US2009237839A1 CPP-type magnetoresistance effect element having three magnetic layers
US2009086384A1 Magneto-resistance effect element including ferromagnetic layer having granular structure