Patents by Inventor Seiichiro Ikawa

Seiichiro Ikawa 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).

  • Silicone hydrogel contact lenses
    Patent number: 9322958
    Abstract: Silicone hydrogel contact lenses are provided which have reduced modulus and contact angle properties, and which have acceptable wettabilities for use in daily wear and extended or continuous wear applications.
    Type: Grant
    Filed: January 14, 2013
    Date of Patent: April 26, 2016
    Assignee: CooperVision International Holding Company, LP
    Inventors: Arthur Back, Junichi Iwata, Tsuneo Hoki, Seiichiro Ikawa
  • Hydrophilic polysiloxane macromonomer, and production and use of the same
    Patent number: 8524850
    Abstract: PROBLEM TO BE SOLVED To provide an ophthalmic lens, which can be more safely worn, that is, to provide a material, which is transparent and has high oxygen permeability and a high hydrophilic property, and to provide a novel monomer to be a raw material thereof. SOLUTION A hydrophilic polysiloxane macromonomer contains polyoxyethylene as a hydrophilic side chains in a polysiloxane main chain, wherein transparency, oxygen permeability, and hydrophilic properties of the material are controlled by regulating the length of the polysiloxane main chain, the length of the hydrophilic polyoxyethylene side chains, and the number of the side chains.
    Type: Grant
    Filed: March 5, 2012
    Date of Patent: September 3, 2013
    Assignee: CooperVision International Holding Company, LP
    Inventors: Hiroyuki Ueyama, Seiichiro Ikawa, Junichi Iwata
  • Hydrophilic Polysiloxane Macromonomer, And Production And Use Of The Same
    Publication number: 20120184698
    Abstract: PROBLEM TO BE SOLVED To provide an ophthalmic lens, which can be more safely worn, that is, to provide a material, which is transparent and has high oxygen permeability and a high hydrophilic property, and to provide a novel monomer to be a raw material thereof. SOLUTION A hydrophilic polysiloxane macromonomer contains polyoxyethylene as a hydrophilic side chains in a polysiloxane main chain, wherein transparency, oxygen permeability, and hydrophilic properties of the material are controlled by regulating the length of the polysiloxane main chain, the length of the hydrophilic polyoxyethylene side chains, and the number of the side chains.
    Type: Application
    Filed: March 5, 2012
    Publication date: July 19, 2012
    Applicant: COOPERVISION INTERNATIONAL HOLDING COMPANY, LP
    Inventors: Hiroyuki Ueyama, Seiichiro Ikawa, Junichi Iwata
  • Hydrophilic polysiloxane macromonomer, and production and use of the same
    Patent number: 8129442
    Abstract: A hydrophilic polysiloxane macromonomer containing polyoxyethylene as a hydrophilic side chains pendant to a polysiloxane main chain for imparting transparency, oxygen permeability, and hydrophilic properties to a contact lens is disclosed. The properties of the material are controlled by regulating the length of the polysiloxane main chain, the length of the hydrophilic polyoxyethylene side chains, and the number of the side chains.
    Type: Grant
    Filed: February 6, 2009
    Date of Patent: March 6, 2012
    Assignee: CooperVision International Holding Company, LP
    Inventors: Hiroyuki Ueyama, Seiichiro Ikawa, Junichi Iwata
  • Hydrophilic Polysiloxane Macromonomer, and Production and Use of the same
    Publication number: 20090234089
    Abstract: Problem to be Solved To provide an ophthalmic lens, which can be more safely worn, that is, to provide a material, which is transparent and has high oxygen permeability and a high hydrophilic property, and to provide a novel monomer to be a raw material thereof. Solution A hydrophilic polysiloxane macromonomer contains polyoxyethylene as a hydrophilic side chains in a polysiloxane main chain, wherein transparency, oxygen permeability, and hydrophilic properties of the material are controlled by regulating the length of the polysiloxane main chain, the length of the hydrophilic polyoxyethylene side chains, and the number of the side chains.
    Type: Application
    Filed: February 6, 2009
    Publication date: September 17, 2009
    Applicant: ASAHI KASEI AIME CO., LTD.
    Inventors: Hiroyuki UEYAMA, Seiichiro IKAWA, Junichi IWATA
  • Solution for preserving and sterilizing contact lenses
    Patent number: 6187264
    Abstract: A solution for preserving and/or disinfecting a contact lens characterized by containing polylysine.
    Type: Grant
    Filed: August 26, 1998
    Date of Patent: February 13, 2001
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Nobuyuki Osawa, Seiichiro Ikawa