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TB OPTICAL CO LTD

Overview
  • Total Patents
    14
About

TB OPTICAL CO LTD has a total of 14 patent applications. Its first patent ever was published in 2000. It filed its patents most often in Japan, EPO (European Patent Office) and Taiwan. Its main competitors in its focus markets measurement, optics and audio-visual technology are HAYASHI KATSUHIKO, HENDRIKS BERNARDUS H W and WYBROW BRIAN R A.

Patent filings in countries

World map showing TB OPTICAL CO LTDs patent filings in countries
# Country Total Patents
#1 Japan 8
#2 EPO (European Patent Office) 2
#3 Taiwan 2
#4 Republic of Korea 1
#5 United States 1

Patent filings per year

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

Focus industries

# Industry
#1 Measurement
#2 Optics
#3 Audio-visual technology

Top inventors

# Name Total Patents
#1 Yagasaki Fumio 7
#2 Kimura Hayato 7
#3 Tsuchiya Haruhiko 6
#4 Ariga Sadaichi 6
#5 Ariga Sadakazu 4
#6 Nagaishi Toshiki 2
#7 Nagaishi Toshimi 2
#8 Hayashida Hideo 1

Latest patents

Publication Filing date Title
JP2004212353A Optical inspection apparatus
US2002064043A1 Light source of illumination for light guide
TW514710B Light source of illumination for light guide
TWI234658B Photosensor device and disk inspection apparatus using it
JP2002350283A Inspection device
JP2002340809A Surface inspection device
JP2002237967A Light-emitting diode illumination light source
JP2002170404A Illumination light source for light guide
JP2002170416A Illuminating light source for light guide
JP2002139448A Photosensor device
JP2002140843A Optical disk inspection device