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TOMEI SANGYO KK

Overview
  • Total Patents
    62
About

TOMEI SANGYO KK has a total of 62 patent applications. Its first patent ever was published in 1981. It filed its patents most often in United States, EPO (European Patent Office) and Australia. Its main competitors in its focus markets medical technology, machines and optics are TOME SANGYO KK, STURM ALBERT and TOMEY TECHN CORP.

Patent filings per year

Chart showing TOMEI SANGYO KKs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Kamiya Hideaki 13
#2 Nakagawa Akira 12
#3 Yanagihara Yasukichi 10
#4 Nakagawa Makoto 10
#5 Kawaguchi Toru 8
#6 Kato Takuo 8
#7 Kamiya Kaoru 5
#8 Oi Yoshiko 4
#9 Endo Masashi 4
#10 Yamauchi Masakatsu 3

Latest patents

Publication Filing date Title
US5487788A Method for cleaning and disinfecting contact lens
EP0591956A1 Method for cleaning, preserving and disinfecting contact lenses
AU3562593A Cleaning and disinfecting method
US5409731A Method for imparting a hydrophilic nature to a contact lens
AU2429392A Device for sterilizing soft lens by boiling
US5181604A Contact lens holder and treating device
US5167323A Lens treating device for treating contact lens
US5120438A Liquid purifying device incorporating air pumping means within container lid body
US5206298A Graft copolymer, solution containing the graft copolymer for treating contact lens, and method of treating contact lens with the solution and making hydrophilic lens surface
EP0445300A1 Cleaning and disinfection of soft contact lenses
US5302312A Detergent for contact lens comprising a water-soluble compound and a copolymer of polyhydric alcohol and a cross-linked acrylic acid and a method for washing contact lens
US5142009A Hard contact lens material
US4904421A Soft ocular lens and method for its preparation
EP0219884A2 Hard contact lens material