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TOKAI KOGAKU KK

Overview
  • Total Patents
    236
  • GoodIP Patent Rank
    21,172
  • Filing trend
    ⇩ 40.0%
About

TOKAI KOGAKU KK has a total of 236 patent applications. It decreased the IP activity by 40.0%. Its first patent ever was published in 1987. It filed its patents most often in Japan, EPO (European Patent Office) and United States. Its main competitors in its focus markets optics, surface technology and coating and machines are TOKAI OPTICAL CO LTD, ADLENS LTD and SILVER JOSHUA D.

Patent filings in countries

World map showing TOKAI KOGAKU KKs patent filings in countries
# Country Total Patents
#1 Japan 234
#2 EPO (European Patent Office) 1
#3 United States 1

Patent filings per year

Chart showing TOKAI KOGAKU KKs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Miura Hitoshi 56
#2 Suzuki Masaya 34
#3 Suzuki Eiji 20
#4 Takahashi Hirotoshi 20
#5 Kato Yuji 19
#6 Miyaguchi Akira 17
#7 Fukagawa Takeshi 13
#8 Hase Kaname 13
#9 Shishino Yuichi 13
#10 Kumagai Naoya 12

Latest patents

Publication Filing date Title
JP2020195775A Brain activity measurement electrode, head-mounted device comprising the electrode, and brain activity measurement system
JP2020127818A Head-mount device for detecting brain activity and brain activity measurement system
JP2020065252A Image projection device, display device, evaluation device, evaluation method, and evaluation system
JP2020201412A Plastic base material nd filter and plastic base material nd filter for glasses
JP2020185302A Necessity determination system and necessity determination method for glasses with colored lenses
JP2020149020A Nd filter, and manufacturing method and manufacturing apparatus of the same
JP2020034887A Precursor lens for eyeglasses with minus strength, eyeglasses' lens, and processing method of precursor lens for eyeglasses with minus strength
JP2020115180A Method and program for predicting warp of optical product
JP2019124938A Spectacle decorative member and spectacles
JP2020098246A Determination method of dioptric power of underwater goggle, and supply system of underwater goggle
JP2020052275A Plastic spectacle lens and spectacle
JP2020052135A Spectacle lens and spectacles
JP2020038261A Spectacle frame and spectacle
JP2020030047A Measurement system and analysis system
JP2019020721A Nd filter, and manufacturing method of the same
JP2019139120A Bifocal lens and method of manufacturing bifocal lens
JP2019139016A Optical product, mirror, and filter
JP2019097733A Brain activity measuring electrode, and head-mounted device and brain activity measuring system that use the electrode
JP2019063290A Apparatus and system for measuring brain activity
JP2018059927A Lens exterior appearance inspection device