Patents by Inventor Wongsewattana Prasert

Wongsewattana Prasert 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).

  • Plastic lens manufacturing method
    Patent number: 9616598
    Abstract: An aspect or the present invention relates to a method of manufacturing a plastic lens, which comprises casting a plastic lens starting material liquid into a cavity in a forming mold and conducting a polymerization reaction of the plastic starting material liquid within the cavity to provide a molded article. The forming mold is one in which two molds are disposed opposite each other, a gasket made of an elastic resin is disposed around the two molds to form the cavity, and at least one of the two molds is made of an elastic resin, one surface of the molded article is a convex surface and the other surface of the molded article is a concave surface, and the concave surface is formed by transferring a molding surface of the mold made of elastic resin.
    Type: Grant
    Filed: September 26, 2011
    Date of Patent: April 11, 2017
    Assignees: HOYA CORPORATION, HOYA Lens Thailand Ltd.
    Inventors: Norkaew Suphavit, Jindakul Wimol, Aruncharoen Thitima, Wongsewattana Prasert
  • PLASTIC LENS MANUFACTURING METHOD
    Publication number: 20130187300
    Abstract: An aspect or the present invention relates to a method of manufacturing a plastic lens, which comprises casting a plastic lens starting material liquid into a cavity in a forming mold and conducting a polymerization reaction of the plastic starting material liquid within the cavity to provide a molded article. The forming mold is one in which two molds are disposed opposite each other, a gasket made of an elastic resin is disposed around the two molds to form the cavity, and at least one of the two molds is made of an elastic resin, one surface of the molded article is a convex surface and the other surface of the molded article is a concave surface, and the concave surface is formed by transferring a molding surface of the mold made of elastic resin.
    Type: Application
    Filed: September 26, 2011
    Publication date: July 25, 2013
    Applicants: HOYA LENS THAILAND LTD., HOYA CORPORATION
    Inventors: Norkaew Suphavit, Jindakul Wimol, Aruncharoen Thitima, Wongsewattana Prasert