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SIGMA KOKI KK

Overview
  • Total Patents
    77
About

SIGMA KOKI KK has a total of 77 patent applications. Its first patent ever was published in 1989. It filed its patents most often in Japan. Its main competitors in its focus markets mechanical elements, optics and machine tools are TAKAHASHI SHIGEO, MAURO GEORGE and AUTOMATION GAGES INC.

Patent filings in countries

World map showing SIGMA KOKI KKs patent filings in countries
# Country Total Patents
#1 Japan 77

Patent filings per year

Chart showing SIGMA KOKI KKs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Tabata Yoshinori 14
#2 Yamamiya Hiroyuki 12
#3 Haraguchi Yasushi 10
#4 Mizumura Mineo 9
#5 Hirata Kazuya 8
#6 Nozaki Yoshitaka 8
#7 Nomi Kazunori 5
#8 Shiyou Mitsuyasu 5
#9 Yanai Hideo 5
#10 Tatsumi Juichi 4

Latest patents

Publication Filing date Title
JP2013242418A Epi-illumination type phase-contrast microscope
JP2013167477A Method and device for measuring refractive index
JP2013167478A Method and device for measuring refractive index
JP2013161050A Optical element holder
JP2013101243A Multi-focal optical system and laser processing device
JP2013053919A Haze value measuring apparatus and haze value measuring method
JP2012247568A Mirror holder
JP2012190084A Information display medium with metal nano particle
JP2012189342A Microspectrometry apparatus
JP2012123326A Coaxial epi-illumination device
JP2012113174A Focus adjustment device and method
JP2012112847A Apparatus and method for adjusting focus
JP2012052997A Optical measurement method and optical measurement device for measuring apparent refraction factor of rough surface of solid body
JP2012052998A Optical measurement method and optical measurement device for measuring refraction factor of solid body having rough surface
JP2011180039A Specimen damage analyzer
JP2011164315A Reflecting mirror device and reflecting mirror base substance
JP2011144052A Method for flattening surface and method for producing optical element
JP2011043175A Fixing mechanism
JP2011038539A Stage device
JP2011038538A Slide mechanism