Learn more

KOYO SEIKO CO

Overview
  • Total Patents
    9,084
About

KOYO SEIKO CO has a total of 9,084 patent applications. Its first patent ever was published in 1963. It filed its patents most often in Japan, United States and EPO (European Patent Office). Its main competitors in its focus markets mechanical elements, transport and machines are NSK LTD, ENG PRODUCTIONS CLEVEDON LTD and NIPPON SEIKO KK.

Patent filings per year

Chart showing KOYO SEIKO COs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Nishizaki Katsutoshi 247
#2 Inoue Masahiro 231
#3 Nakano Shiro 183
#4 Sano Osamu 179
#5 Segawa Masaya 170
#6 Kada Tomoyasu 170
#7 Hiragushi Shuzo 167
#8 Takahashi Takeshi 166
#9 Fujiwara Hideki 152
#10 Ueno Hiroshi 136

Latest patents

Publication Filing date Title
US2006134344A1 Coated article, manufacturing method therefor and coating apparatus
JP2005335710A Steering device for vehicle
JP2006017310A Slide bearing device
WO2006019142A1 Retainer for bearing
WO2006019121A1 Bearing retainer
US2007025654A1 Tapered roller bearing assembly and method of fabricating the same
WO2005115819A1 Vehicle steering device
WO2005119106A1 Seal structure and cross shaft coupling
JP2006008114A Impact-absorbing steering apparatus
JP2005233433A Retainer for rolling bearing
WO2005111451A1 Shaft joint monitoring device
WO2005108943A1 Torque detection device
JP2005273915A Bearing apparatus for wheel
JP2005280703A Bearing device for wheel and its processing method
JP2005214426A Sealing device for rolling bearing
JP2005186938A Bearing device for vehicle axle and its method of manufacturing
JP2005193906A Impact absorption type steering column
JP2005161407A Structure for supporting rolling roll
JP2005140342A Closed type thrust dynamic pressure bearing
JP2005193902A Bearing unit for wheel