Patents by Inventor Tokinori Agou

Tokinori Agou has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • High light-transmissive dust-proof body and method of preparing same
    Patent number: 5246767
    Abstract: A high light-transmissive dust-proof body equipped with a holding frame to be mounted on a mask substrate and a transparent light-transmissive film mounted on the holding frame, wherein the light-transmissive film comprises an inorganic film having a thickness of 0.2 .mu.m to less than 10 .mu.m and transmitting light having wavelengths of 240 to 500 nm at an average light transmittance of at least 85%, wherein the light-transmissive film forms (i) a three-layer structure of a low refractive index layer/high refractive index layer/base layer, or (ii) a five-layer structure comprising a low refractive index layer/high refractive index layer/base layer/high refractive index layer/low refractive index layer, the high refractive index layer being an inorganic layer and the low refractive index layer being an organic polymer.
    Type: Grant
    Filed: December 12, 1989
    Date of Patent: September 21, 1993
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Tokinori Agou, Hiroaki Nakagawa
  • Fluorine-containing mono- or poly-alkylene glycol and method for producing same
    Patent number: 5068400
    Abstract: The novel fluorine-containing mono- or poly-alkylene glycol of this invention is a mono- or poly-alkylene glycol of the formula (I): ##STR1## wherein R.sup.1, R.sup.2 and R.sup.
    Type: Grant
    Filed: June 29, 1988
    Date of Patent: November 26, 1991
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Masahide Tanaka, Tokinori Agou, Masahiro Kuwahara, Takeshi Sakashita, Tomoaki Shimoda, Masaru Sudou
  • Reflection-preventive pellicle film and process for preparation thereof
    Patent number: 5059451
    Abstract: A reflection-preventive layer composed of a specific polyfluoro(meth)acrylate is formed on one or both of the surfaces of a transparent film of a cellulose derivative. In this reflection-preventive pellicle film, the minimum light transmission in wavelengths of 350 to 450 nm is improved and the average light transmission is improved, and the adhesion of the reflection-preventive layer to the cellulose derivative layer is excellent.
    Type: Grant
    Filed: June 27, 1990
    Date of Patent: October 22, 1991
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Tokinori Agou, Hitomi Matsuzaki, Masaaki Kawasaki
  • Oxygen-permeable article of fluorinated hydrocarbon group-grafted (meth)acrylate polymers
    Patent number: 5057585
    Abstract: Hydrophilic gelled crosslinked polymers comprising as an essential constituent monomer component a (meth)acrylate ester monomer having a fluorine-substituted hydrocarbon group containing at least three fluorine atoms grafted thereto. The fluorine-containing polymers have excellent oxygen permeability, water swellability, wearing comfort and contamination resistance.
    Type: Grant
    Filed: July 19, 1990
    Date of Patent: October 15, 1991
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Tokinori Agou, Takeshi Sakashita, Tomoaki Shimoda, Masaru Sudo, Masahiro Kuwabara, Masahide Tanaka
  • Reflection-preventive pellicle film
    Patent number: 4966813
    Abstract: A reflection-preventive layer composed of a specific polyfluoro(meth)acrylate is formed on one or both of the surfaces of a transparent film of a cellulose derivative. In this reflection-preventive pellicle film, the minimum light transmission in wavelengths of 350 to 450 nm is improved and the average light transmission is improved, and the adhesion of the reflection-preventive layer to the cellulose derivative layer is excellent.
    Type: Grant
    Filed: July 11, 1988
    Date of Patent: October 30, 1990
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Tokinori Agou, Hitomi Matsuzaki, Masahide Tanaka, Takamasa Tsumoto, Masaaki Kawasaki, Takami Nishikawa, Shuji Minami
  • Fluorine-substituted hydrocarbon group grafted (meth)acrylate polymers
    Patent number: 4957985
    Abstract: Hydrophilic gelled crosslinked polymers comprising as an essential constituent monomer component a (meth)acrylate ester monomer having a fluorine-substituted hydrocarbon group containing at least three fluorine atoms grafted thereto. The fluorine-containing polymers have excellent oxygen permeability, water swellability, wearing comfort and contamination resistance.
    Type: Grant
    Filed: December 29, 1987
    Date of Patent: September 18, 1990
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Tokinori Agou, Takeshi Sakashita, Tomoaki Shimoda, Masaru Sudo, Masahiro Kuwabara, Masahide Tanaka