Patents by Inventor Ryuya GOTANDA

Ryuya GOTANDA 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).

  • Monomer composition for contact lenses, polymer for contact lenses, contact lens, and method of producing the contact lens
    Patent number: 11867875
    Abstract: Provided is a contact lens that can exhibit excellent breaking elongation and surface hydrophilicity even when produced using a hydrophobic mold made of polypropylene or the like without performing a surface hydrophilic treatment. Further provided are a monomer composition and a polymer that can be suitably used for obtaining the contact lens. This monomer composition contains (A) a siloxanyl group-containing itaconic acid diester monomer, (B) an amide group-containing monomer, (C) a hydroxy group-containing monomer, (D) a siloxanyl group-containing (meth)acrylate, and (E) a cross-linking agent in a specific ratio.
    Type: Grant
    Filed: September 10, 2019
    Date of Patent: January 9, 2024
    Assignee: NOF CORPORATION
    Inventors: Ryuya Gotanda, Koh Kobayashi, Shu Takashima, Norio Iwakiri, Yosuke Matsuoka, Eiji Harata
  • Phosphorylcholine group-containing polysiloxane monomer
    Patent number: 11851516
    Abstract: Provided is a monomer suitable for application to an ophthalmic device, the monomer showing high surface hydrophilicity, a high oxygen transmissibility, and appropriate mechanical strength when copolymerized with a polymerizable monomer, such as a hydrophilic monomer. It has been recognized that a phosphorylcholine group-containing polysiloxane monomer can solve the problems.
    Type: Grant
    Filed: April 4, 2019
    Date of Patent: December 26, 2023
    Assignee: NOF CORPORATION
    Inventors: Yosuke Matsuoka, Akane Katori, Norio Iwakiri, Shu Takashima, Ryuya Gotanda, Nobuyuki Sakamoto
  • MONOMER COMPOSITION FOR CONTACT LENSES, POLYMER FOR CONTACT LENSES AND METHOD FOR PRODUCING SAME, AND CONTACT LENS AND METHOD FOR PRODUCING THE SAME
    Publication number: 20220227911
    Abstract: Provided is a monomer composition for contact lenses, which uses a polysiloxane monomer to produce a polymer that shows satisfactory surface hydrophilicity and oxygen permeability, and that is excellent in modulus and elongation at break. It has been found that a monomer composition containing a phosphorylcholine group-containing polysiloxane monomer, a monovinyl ether monomer, and the like can achieve the above-mentioned object.
    Type: Application
    Filed: April 17, 2020
    Publication date: July 21, 2022
    Applicant: NOF CORPORATION
    Inventors: Shu TAKASHIMA, Koh KOBAYASHI, Ryuya GOTANDA, Norio IWAKIRI, Yosuke MATSUOKA, Eiji HARATA
  • MONOMER COMPOSITION FOR CONTACT LENSES, POLYMER FOR CONTACT LENSES, CONTACT LENS, AND METHOD OF PRODUCING THE CONTACT LENS
    Publication number: 20220035076
    Abstract: Provided is a contact lens that can exhibit excellent breaking elongation and surface hydrophilicity even when produced using a hydrophobic mold made of polypropylene or the like without performing a surface hydrophilic treatment. Further provided are a monomer composition and a polymer that can be suitably used for obtaining the contact lens. This monomer composition contains (A) a siloxanyl group-containing itaconic acid diester monomer, (B) an amide group-containing monomer, (C) a hydroxy group-containing monomer, (D) a siloxanyl group-containing (meth)acrylate, and (E) a cross-linking agent in a specific ratio.
    Type: Application
    Filed: September 10, 2019
    Publication date: February 3, 2022
    Applicant: NOF CORPORATION
    Inventors: Ryuya GOTANDA, Koh KOBAYASHI, Shu TAKASHIMA, Norio IWAKIRI, Yosuke MATSUOKA, Eiji HARATA
  • PHOSPHORYLCHOLINE GROUP-CONTAINING POLYSILOXANE MONOMER
    Publication number: 20210189044
    Abstract: Provided is a monomer suitable for application to an ophthalmic device, the monomer showing high surface hydrophilicity, a high oxygen transmissibility, and appropriate mechanical strength when copolymerized with a polymerizable monomer, such as a hydrophilic monomer. It has been recognized that a phosphorylcholine group-containing polysiloxane monomer can solve the problems.
    Type: Application
    Filed: April 4, 2019
    Publication date: June 24, 2021
    Applicant: NOF CORPORATION
    Inventors: Yosuke MATSUOKA, Akane KATORI, Norio IWAKIRI, Shu TAKASHIMA, Ryuya GOTANDA, Nobuyuki SAKAMOTO