Patents by Inventor Mitsuru Yokota

Mitsuru Yokota 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).

  • Publication number: 20200101661
    Abstract: A plasticizing device includes a driving motor, a rotor that is rotated by rotation of the driving motor and has a groove-formed surface having a groove formed in a rotation direction, and a barrel that is opposite to the groove-formed surface and has a communication hole and a heater, plasticizes a material supplied between the groove and the barrel by rotation of the rotor and heating by the heater, and causes the plasticized material to flow out from the communication hole. Aside surface of the groove has a protrusion and recess surface including protrusion portions or recess portions.
    Type: Application
    Filed: September 26, 2019
    Publication date: April 2, 2020
    Inventors: Kakeru SASAGAWA, Kei YOKOTA, Kenta ANEGAWA, Seiichiro YAMASHITA, Yusuke WATANABE, Yuichi SASAGE, Mitsuru INUTSUKA
  • Publication number: 20200023562
    Abstract: An injection molding apparatus includes an injection-molding mold including a fixed mold and a movable mold, the fixed mold having a gate opening into which a molding material flows, the movable mold having a cavity and being configured to be separated from the fixed mold during mold opening; a hot runner including a nozzle having a channel that guides the molding material to the gate opening, and a heater, the hot runner being disposed in the fixed mold; and a control unit that controls a temperature of the heater to adjust a temperature of the hot runner. The control unit controls the temperature of the heater to a first temperature when the molding material is injected from the hot runner to the cavity, and after the injection of the molding material is completed, controls the temperature of the heater to a second temperature that is higher than the first temperature.
    Type: Application
    Filed: July 19, 2019
    Publication date: January 23, 2020
    Inventors: Kenta ANEGAWA, Seiichiro YAMASHITA, Kei YOKOTA, Mitsuru INUTSUKA, Yusuke WATANABE, Kakeru SASAGAWA, Yuichi SASAGE
  • Publication number: 20190358903
    Abstract: A plasticizing device includes a first member having a groove portion that has a spiral shape extending to a center, a motor that rotates the first member, a second member that faces the first member, and a heating unit for heating a material that is transported along the groove portion, the first member having a plurality of recessed portions on a bottom surface of the groove portion. By providing a plurality of recessed portions on the bottom surface of the first member through which the material flows, the rotational force of the rotating first member is easily transmitted to the material and the amount of material flowing in the first member can be increased.
    Type: Application
    Filed: May 22, 2019
    Publication date: November 28, 2019
    Inventors: Yusuke WATANABE, Kei YOKOTA, Yuichi SASAGE, Kenta ANEGAWA, Seiichiro YAMASHITA, Mitsuru INUTSUKA, Kakeru SASAGAWA
  • Patent number: 9056878
    Abstract: In one aspect, the invention relates to hydrolysis-resistant silicone compounds. In particular, disclosed are sterically hindered hydrolysis-resistant silicone compounds and improved purity hydrolysis-resistant silicone compounds. Also disclosed are processes for making hydrolysis-resistant silicone compounds; the products of the disclosed processes; compositions and polymers comprising the disclosed compounds and products of the disclosed processes; and ophthalmic lenses, for example contact lenses, intraocular lenses, artificial cornea, and spectacle lenses, comprising the disclosed compositions, disclosed polymers, disclosed compounds, and products of the disclosed processes. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.
    Type: Grant
    Filed: June 10, 2014
    Date of Patent: June 16, 2015
    Assignees: Johnson & Johnson Vision Care, Inc., Toray Industries, Inc.
    Inventors: Kazuhiko Fujisawa, Masataka Nakamura, Mitsuru Yokota, Douglas G. Vanderlaan
  • Patent number: 9056880
    Abstract: In one aspect, the invention relates to hydrolysis-resistant silicone compounds. In particular, disclosed are sterically hindered hydrolysis-resistant silicone compounds and improved purity hydrolysis-resistant silicone compounds. Also disclosed are processes for making hydrolysis-resistant silicone compounds; the products of the disclosed processes; compositions and polymers comprising the disclosed compounds and products of the disclosed processes; and ophthalmic lenses, for example contact lenses, intraocular lenses, artificial cornea, and spectacle lenses, comprising the disclosed compositions, disclosed polymers, disclosed compounds, and products of the disclosed processes. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.
    Type: Grant
    Filed: November 7, 2012
    Date of Patent: June 16, 2015
    Assignees: Johnson & Johnson Vision Care, Inc., Toray Industries, Inc.
    Inventors: Kazuhiko Fujisawa, Masataka Nakamura, Mitsuru Yokota
  • Patent number: 8921449
    Abstract: In one aspect, the invention relates to hydrolysis-resistant silicone compounds. In particular, disclosed are sterically hindered hydrolysis-resistant silicone compounds and improved purity hydrolysis-resistant silicone compounds. Also disclosed are processes for making hydrolysis-resistant silicone compounds; the products of the disclosed processes; compositions and polymers comprising the disclosed compounds and products of the disclosed processes; and ophthalmic lenses, for example contact lenses, intraocular lenses, artificial cornea, and spectacle lenses, comprising the disclosed compositions, disclosed polymers, disclosed compounds, and products of the disclosed processes. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.
    Type: Grant
    Filed: January 21, 2013
    Date of Patent: December 30, 2014
    Assignees: Johnson & Johnson Vision Care Inc., Toray Industries, Inc.
    Inventors: Kazuhiko Fujisawa, Masataka Nakamura, Mitsuru Yokota, Douglas G. Vanderlaan
  • Publication number: 20140296554
    Abstract: In one aspect, the invention relates to hydrolysis-resistant silicone compounds. In particular, disclosed are sterically hindered hydrolysis-resistant silicone compounds and improved purity hydrolysis-resistant silicone compounds. Also disclosed are processes for making hydrolysis-resistant silicone compounds; the products of the disclosed processes; compositions and polymers comprising the disclosed compounds and products of the disclosed processes; and ophthalmic lenses, for example contact lenses, intraocular lenses, artificial cornea, and spectacle lenses, comprising the disclosed compositions, disclosed polymers, disclosed compounds, and products of the disclosed processes. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.
    Type: Application
    Filed: June 10, 2014
    Publication date: October 2, 2014
    Inventors: Kazuhiko Fujisawa, Masataka Nakamura, Mitsuru Yokota, Douglas G. Vanderlaan
  • Publication number: 20140128564
    Abstract: In one aspect, the invention relates to hydrolysis-resistant silicone compounds. In particular, disclosed are sterically hindered hydrolysis-resistant silicone compounds and improved purity hydrolysis-resistant silicone compounds. Also disclosed are processes for making hydrolysis-resistant silicone compounds; the products of the disclosed processes; compositions and polymers comprising the disclosed compounds and products of the disclosed processes; and ophthalmic lenses, for example contact lenses, intraocular lenses, artificial cornea, and spectacle lenses, comprising the disclosed compositions, disclosed polymers, disclosed compounds, and products of the disclosed processes. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.
    Type: Application
    Filed: November 7, 2012
    Publication date: May 8, 2014
    Inventors: Kazuhiko Fujisawa, Masataka Nakamura, Mitsuru Yokota
  • Patent number: 8637589
    Abstract: In one aspect, the invention relates to silicone prepolymer compositions comprising a silicone prepolymer and a solvent. A soluble silicone prepolymer can be provided having increased average silicon content, thereby attaining a desired oxygen permeability. A solvent can be provided with a desired balance between hydrophilicity and hydrophobicity by selection and modification of the solvent molecular structure, resulting in molded polymer films and articles that exhibit minimal or nonexistent eye irritation and exhibit highly transparent products. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.
    Type: Grant
    Filed: December 7, 2010
    Date of Patent: January 28, 2014
    Assignees: Johnson & Johnson Vision Care, Inc., Toray Industries
    Inventors: Kazuhiko Fujisawa, Mitsuru Yokota, Masataka Nakamura
  • Patent number: 8569538
    Abstract: In one aspect, the invention relates to methods of synthesizing acryloyl compounds, comprising the step of hydrosilylating a compound having the structure: with a compound having the structure A-H, wherein A comprises a siloxanyl group, to yield a compound having the structure: Compounds and compositions produced thereby can effectively attain a satisfactory balance between high oxygen permeability and hydrophilicity while achieving an acceptably low concentration of undesirable impurities. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.
    Type: Grant
    Filed: December 12, 2006
    Date of Patent: October 29, 2013
    Assignees: Johnson & Johnson Vision Care, Inc., Toray Industries, Inc.
    Inventors: Masataka Nakamura, Mitsuru Yokota, Takehiro Kohara, Kimihiro Kamasaka, Hiroya Koyama, Shinya Kiguchi, Satoshi Umeda
  • Patent number: 8399539
    Abstract: In one aspect, the invention relates to silicon-based prepolymers. The disclosed prepolymers exhibit satisfactory solubility in aqueous solutions or hydrophilic solutions and can overcome undesirable shrinkage, expansion, and related problems possessed by conventional silicone monomers and related conventional polymerization techniques by producing hydrogels from a crosslinkable prepolymer. Also disclosed are polymers and molded articles produced from the disclosed prepolymers, which attain a satisfactory oxygen permeability. Also disclosed are methods for producing the disclosed prepolymers. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.
    Type: Grant
    Filed: November 19, 2011
    Date of Patent: March 19, 2013
    Assignees: Johnson & Johnson Vision Care, Inc., Toray Industries, Inc.
    Inventors: Kazuhiko Fujisawa, Mitsuru Yokota, Masataka Nakamura
  • Patent number: 8357818
    Abstract: In one aspect, the invention relates to hydrolysis-resistant silicone compounds. In particular, disclosed are sterically hindered hydrolysis-resistant silicone compounds and improved purity hydrolysis-resistant silicone compounds. Also disclosed are processes for making hydrolysis-resistant silicone compounds; the products of the disclosed processes; compositions and polymers comprising the disclosed compounds and products of the disclosed processes; and ophthalmic lenses, for example contact lenses, intraocular lenses, artificial cornea, and spectacle lenses, comprising the disclosed compositions, disclosed polymers, disclosed compounds, and products of the disclosed processes. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.
    Type: Grant
    Filed: October 8, 2010
    Date of Patent: January 22, 2013
    Assignees: Johnson & Johnson Vision Care, Inc., Toray Industries, Inc.
    Inventors: Kazuhiko Fujisawa, Masataka Nakamura, Mitsuru Yokota, Douglas G. Vanderlaan
  • Publication number: 20120065348
    Abstract: In one aspect, the invention relates to silicon-based prepolymers. The disclosed prepolymers exhibit satisfactory solubility in aqueous solutions or hydrophilic solutions and can overcome undesirable shrinkage, expansion, and related problems possessed by conventional silicone monomers and related conventional polymerization techniques by producing hydrogels from a crosslinkable prepolymer. Also disclosed are polymers and molded articles produced from the disclosed prepolymers, which attain a satisfactory oxygen permeability. Also disclosed are methods for producing the disclosed prepolymers. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.
    Type: Application
    Filed: November 19, 2011
    Publication date: March 15, 2012
    Inventors: Kazuhiko Fujisawa, Mitsuru Yokota, Masataka Nakamura
  • Patent number: 8080622
    Abstract: In one aspect, the invention relates to silicon-based prepolymers. The disclosed prepolymers exhibit satisfactory solubility in aqueous solutions or hydrophilic solutions and can overcome undesirable shrinkage, expansion, and related problems possessed by conventional silicone monomers and related conventional polymerization techniques by producing hydrogels from a crosslinkable prepolymer. Also disclosed are polymers and molded articles produced from the disclosed prepolymers, which attain a satisfactory oxygen permeability. Also disclosed are methods for producing the disclosed prepolymers. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.
    Type: Grant
    Filed: June 29, 2007
    Date of Patent: December 20, 2011
    Assignees: Johnson & Johnson Vision Care, Inc., Toray Industries Inc.
    Inventors: Kazuhiko Fujisawa, Mitsuru Yokota, Masataka Nakamura
  • Patent number: 8053539
    Abstract: In one aspect, the invention relates to compositions comprising siloxanyl compounds comprising the structure: or residues thereof. Such compositions can be suitable for producing molded articles, can be excellent in transparency, hydrophilicity, and oxygen permeability, and can have a low modulus of elasticity and/or an excellent optical quality, so as to be suitable for ophthalmic lenses such as contact lenses and intraocular lenses. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.
    Type: Grant
    Filed: December 12, 2006
    Date of Patent: November 8, 2011
    Assignees: Johnson & Johnson Vision Care Inc., Toray Industries Inc.
    Inventors: Masataka Nakamura, Kazuhiko Fujisawa, Mitsuru Yokota
  • Publication number: 20110077322
    Abstract: In one aspect, the invention relates to silicone prepolymer compositions comprising a silicone prepolymer and a solvent. A soluble silicone prepolymer can be provided having increased average silicon content, thereby attaining a desired oxygen permeability. A solvent can be provided with a desired balance between hydrophilicity and hydrophobicity by selection and modification of the solvent molecular structure, resulting in molded polymer films and articles that exhibit minimal or nonexistent eye irritation and exhibit highly transparent products. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.
    Type: Application
    Filed: December 7, 2010
    Publication date: March 31, 2011
    Inventors: Kazuhiko Fujisawa, Mitsuru Yokota, Masataka Nakamura
  • Patent number: 7897654
    Abstract: In one aspect, the invention relates to silicone prepolymer compositions comprising a silicone prepolymer and a solvent. A soluble silicone prepolymer can be provided having increased average silicon content, thereby attaining a desired oxygen permeability. A solvent can be provided with a desired balance between hydrophilicity and hydrophobicity by selection and modification of the solvent molecular structure, resulting in molded polymer films and articles that exhibit minimal or nonexistent eye irritation and exhibit highly transparent products. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.
    Type: Grant
    Filed: April 1, 2008
    Date of Patent: March 1, 2011
    Assignees: Johnson & Johnson Vision Care Inc., Toray Industries Inc.
    Inventors: Kazuhiko Fujisawa, Mitsuru Yokota, Masataka Nakamura
  • Publication number: 20110028673
    Abstract: In one aspect, the invention relates to hydrolysis-resistant silicone compounds. In particular, disclosed are sterically hindered hydrolysis-resistant silicone compounds and improved purity hydrolysis-resistant silicone compounds. Also disclosed are processes for making hydrolysis-resistant silicone compounds; the products of the disclosed processes; compositions and polymers comprising the disclosed compounds and products of the disclosed processes; and ophthalmic lenses, for example contact lenses, intraocular lenses, artificial cornea, and spectacle lenses, comprising the disclosed compositions, disclosed polymers, disclosed compounds, and products of the disclosed processes. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.
    Type: Application
    Filed: October 8, 2010
    Publication date: February 3, 2011
    Inventors: Kazuhiko Fujisawa, Masataka Nakamura, Mitsuru Yokota, Douglas G. Vanderlaan
  • Publication number: 20100317615
    Abstract: A method of enhancing ocular penetration of a drug in an eyedrop by administering to an eye, an eyedrop containing, particulate agar having a weight-average molecular weight of from 5,000 to 1,200,000, the particulate agar being obtained by dissolving agar into an aqueous solution by heating and then cooling the resultant mixture to avoid gelling, while applying a stress by vibration, shearing, stirring, compression or pulverizing, wherein the particulate agar is in an amount of 0.1 to 10 wt %.
    Type: Application
    Filed: August 16, 2010
    Publication date: December 16, 2010
    Applicants: TORAY INDUSTRIES, INC., SANTEN PHARMACEUTICAL CO., LTD.
    Inventors: Masahiro Inohara, Masahito Yoshikawa, Takashi Taniguchi, Mitsuru Yokota, Naoki Shimoyama, Masaki Ue, Miho Araki
  • Patent number: 7838698
    Abstract: In one aspect, the invention relates to hydrolysis-resistant silicone compounds. In particular, disclosed are sterically hindered hydrolysis-resistant silicone compounds and improved purity hydrolysis-resistant silicone compounds. Also disclosed are processes for making hydrolysis-resistant silicone compounds; the products of the disclosed processes; compositions and polymers comprising the disclosed compounds and products of the disclosed processes; and ophthalmic lenses, for example contact lenses, intraocular lenses, artificial cornea, and spectacle lenses, comprising the disclosed compositions, disclosed polymers, disclosed compounds, and products of the disclosed processes. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.
    Type: Grant
    Filed: November 20, 2006
    Date of Patent: November 23, 2010
    Assignees: Johnson & Johnson Vision Care, Inc., Toray Industries, Inc.
    Inventors: Kazuhiko Fujisawa, Masataka Nakamura, Mitsuru Yokota, Douglas G. Vanderlaan