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UNION OPTICAL CO LTD

Overview
  • Total Patents
    32
About

UNION OPTICAL CO LTD has a total of 32 patent applications. Its first patent ever was published in 1974. It filed its patents most often in Japan, Germany and United States. Its main competitors in its focus markets optics, electrical machinery and energy and measurement are TANAKA EIICHIRO, SUZUKI AKIO and ZEISS CARL MICROSCOPY GMBH.

Patent filings in countries

World map showing UNION OPTICAL CO LTDs patent filings in countries
# Country Total Patents
#1 Japan 30
#2 Germany 1
#3 United States 1

Patent filings per year

Chart showing UNION OPTICAL CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Sato Masataka 5
#2 Shimada Kunio 5
#3 Yamauchi Takeshi 4
#4 Matsumoto Noriyoshi 4
#5 Hosobuchi Hiroshi 3
#6 Miyazaki Ikuhito 3
#7 Momose Katsumi 3
#8 Iino Tetsuo 2
#9 Hirano Yutaka 2
#10 Tamaki Junichi 2

Latest patents

Publication Filing date Title
JP2010051991A Laser optical equipment
JP2009198336A Optical height/step measuring device
JP2002277227A Air type measuring instrument
JP2002280282A Method and device for calibrating wafer
JP2000174098A Work-passing device
JP2000173907A Work position controlling device for mask
JP2000173909A Work moving mechanism of exposure device
JP2000173908A Illumination mechanism for aligner
JP2000056231A Error correcting device for measurement optical equipment
JP2000055623A Error correcting device for optical instrument for measurement
JPH11326773A Vertical illuminating device for optical equipment
JPH11274065A Projecting aligner
JPH11160624A Microscope objective lens
JPH11126737A Aliner and method for projection exposure
JPH1176162A Light source device of keratometer
JPH119549A Camera connector with endoscope
JPH10223040A Mounting table for photographing and video presenter
JPH10211159A Hard endoscope for medical use
JPH10221610A Automatic light controller for optical equipment
JPH10221013A Detecting method for focusing point