Learn more

TOYO CONTACT LENS CO LTD

Overview
  • Total Patents
    190
About

TOYO CONTACT LENS CO LTD has a total of 190 patent applications. Its first patent ever was published in 1971. It filed its patents most often in Japan, United States and Germany. Its main competitors in its focus markets optics, macromolecular chemistry and polymers and machines are OCULAR TECHNOLOGIES INC, NOVICKY NICK N and PARAGON OPTICAL INC.

Patent filings in countries

World map showing TOYO CONTACT LENS CO LTDs patent filings in countries

Patent filings per year

Chart showing TOYO CONTACT LENS CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Tanaka Kiyouichi 34
#2 Toyoshima Nobuyuki 30
#3 Shibata Takanori 27
#4 Tanaka Kyoichi 27
#5 Nakajima Tatsutoshi 27
#6 Nakada Kazuhiko 26
#7 Takahashi Kouzou 22
#8 Yamanaka Masashige 18
#9 Tsuzuki Akira 17
#10 Kato Yasuyuki 15

Latest patents

Publication Filing date Title
JPH01295216A Production of material for oxygen permeable soft contact lens
JPH01227753A In-eye lens forming body
JPH01207056A Balloon body for intraocular lens and preparation thereof
JPS6432859A Intraocular lens and its preparation
JPS63264719A Method for dyeing soft contact lens
JPS63206240A Method and apparatus for producing intraocular lens
JPS63200755A Intraocular lens
JPS63295611A Material for soft contact lens
JPS63189147A Production of intraocular lens
JPS63172117A Soft contact lens
JPS63165727A Fluorescent agent for inspecting contact lens
JPS63142322A Liquid agent compound for contact lens
JPS63131124A Liquid agent composition for contact lens
JPS63135577A Coloration of water holdable contact lens
JPS63109866A Material for intraocular lens
JPS6370221A Production of lens for eyes
JPS6365857A Method and apparatus for processing chip part of loop member of intraocular lens
JPS6361225A Production of lens for eyes
JPS6359964A Material for ultraviolet ray absorbable intraocular lens
JPS6337312A Material for soft contact lens