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TOKAI OPTICAL CO LTD

Overview
  • Total Patents
    161
  • GoodIP Patent Rank
    17,047
  • Filing trend
    ⇩ 35.0%
About

TOKAI OPTICAL CO LTD has a total of 161 patent applications. It decreased the IP activity by 35.0%. Its first patent ever was published in 2005. It filed its patents most often in WIPO (World Intellectual Property Organization), EPO (European Patent Office) and China. Its main competitors in its focus markets optics, machines and surface technology and coating are TOKAI KOGAKU KK, ADLENS LTD and SURGICAL ACUITY INC.

Patent filings per year

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

Top inventors

# Name Total Patents
#1 Takahashi Hirotoshi 69
#2 Fukagawa Tsuyoshi 27
#3 Suzuki Masaya 20
#4 Ueno Hiroshi 16
#5 Kato Yuji 16
#6 Ono Shingo 15
#7 Takeshima Yasuyuki 12
#8 Inui Koji 12
#9 Kakigi Ryusuke 12
#10 Yoshida Takuro 11

Latest patents

Publication Filing date Title
WO2020179482A1 Plastic lens and eye glasses
WO2018070379A1 Eye movement measuring device and eye movement analysis system
EP3407100A1 Nd filter with plastic base material, and nd filter with plastic base material for eyeglasses
CN107850795A Spectacle lens manufacturing system
WO2016208584A1 Spectacle lens manufacturing system
US2018134872A1 Plastic lens
KR20170040536A Optical product and eyeglass lens
EP3151041A1 An optical film and spectacle lens
US2017097521A1 Optical product and spectacle lens
CN106556882A Optical goods and eyeglass
EP3056939A1 Glasses-lens assessment method, glasses-lens design method using assessment method, and calculation method for visual-performance characteristics of test subject when viewing object through lens
WO2013137179A1 Eyeglass lens and bifocal eyeglasses
KR20140135698A Optical product and method for manufacturing same
US2013063810A1 Infrared-transmitting cover
KR20140043363A Haze-proof optical article and method for producing same
WO2011102502A1 Method for producing plastic lens having antistatic anti-reflection film, and plastic lens produced by the method
EP2390708A1 Head mounted display
CA2705633A1 Display unit
KR20160137680A Method for designing eyeglass lenses
CN102083587A Method of producing precursor lens for globular lens