Learn more

KOYO MACHINE IND CO LTD

Overview
  • Total Patents
    416
  • GoodIP Patent Rank
    36,372
  • Filing trend
    ⇧ 150.0%
About

KOYO MACHINE IND CO LTD has a total of 416 patent applications. It increased the IP activity by 150.0%. Its first patent ever was published in 1978. It filed its patents most often in Japan, United States and Republic of Korea. Its main competitors in its focus markets machine tools, mechanical elements and machines are JUNG GMBH K, SHENYANG HERMOS CNC MACHINE TOOL CO LTD and KUNSHAN YUNCO PREC IND TECHNOLOGY CO LTD.

Patent filings per year

Chart showing KOYO MACHINE IND CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Yamada Hirohisa 33
#2 Shibanaka Atsushi 29
#3 Sasakura Shizuki 29
#4 Ueda Koichi 24
#5 Inokuchi Hisayoshi 22
#6 Ikeda Junzo 21
#7 Tsuda Hirokatsu 20
#8 Hirayama Haruyuki 18
#9 Okura Kenji 17
#10 Kubo Yukito 17

Latest patents

Publication Filing date Title
US2021102583A1 Assembly method and assembly apparatus for cross shaft universal joint
JP2019010729A Centerless grinder
JP2019130612A Plane grinding method of workpiece and double-head plane grinder
JP2019095040A Manufacturing method of spline telescopic shaft
JP2018149621A Surface grinding method and surface grinding device
JP2018094699A Grinding apparatus and grinding method
JP2018075645A Tool diameter variable main shaft apparatus
JP2018024052A Dressing method and grinding method for workpiece
JP2018024051A Dressing method and grinding method for workpiece
JP2018024050A Dressing method and grinding method for workpiece
JP2018024054A Grinding apparatus and grinding method
JP2018001371A Rotary chuck
JP2017074655A Centerless grinder
JP2017056516A Surface grinding method of workpiece and surface grinder
JP2016198826A Manufacturing method for thin plate-like workpiece and double-headed plane grinder
JP2016150414A Double-ended flat grinding grindstone and double-ended flat grinding method
JP2016150403A Double-ended plane grinding device
JP2016132084A Double-head flat surface grinding device
JP2015160250A Double head surface grinding method and double head surface grinder
JP2015160249A Surface grinding method of work-piece