Patents by Inventor Masakazu Nakata

Masakazu Nakata 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).

  • METHOD FOR MANUFACTURING POLARIZING FILM, POLY(VINYL ALCOHOL)-BASED RESIN FOR POLARIZING FILM, POLY(VINYL ALCOHOL)-BASED RESIN SOLUTION FOR POLARIZING FILM, POLARIZING FILM, AND POLARIZING PLATE
    Publication number: 20140016195
    Abstract: Provided are a method of manufacturing a polarizing film, in which time for dyeing can be shortened, and the productivity of polarizing films with few dyeing unevenness can be heightened, and a poly (vinyl alcohol)-based resin for a polarizing film. The method of manufacturing a polarizing film according to the present invention includes the steps of: preparing a poly (vinyl alcohol)-based resin film formed by using a poly (vinyl alcohol)-based resin having a saponification degree of 94 to 98.5 mol % obtained in accordance with JIS K6726 and a polymerization degree of 2500 to 3000; and obtaining a polarizing film using the poly (vinyl alcohol) -based resin film; and the poly (vinyl alcohol)-based resin for a polarizing film according to the present invention is a poly (vinyl alcohol)-based resin having a saponification degree of 94 to 98.5 mol % measured in accordance with JIS K6726 and a polymerization degree of 2500 to 3000.
    Type: Application
    Filed: March 2, 2012
    Publication date: January 16, 2014
    Inventors: Hajime Shouhi, Masakazu Nakata
  • Photocurable pressure-sensitive adhesive composition and its sheet
    Patent number: 6641912
    Abstract: An objective is to provide a pressure-sensitive adhesive composition which shows pressure-sensitive adhesive properties at ordinary temperature, has the ability to cure upon irradiation and after photocure exhibits improved bond strength relative to high-polarity adherends, such as PET, PVC and metals, and improved moist heat-resisting bond strength, a pressure-sensitive adhesive and a pressure-sensitive adhesive sheet obtained from the aforementioned pressure-sensitive adhesive composition. A photocurable pressure-sensitive adhesive composition containing a polyester resin having a glass transition temperature (Tg) of 25° C. or above, a cationically photopolymerizable compound and a cationic photoinitiator.
    Type: Grant
    Filed: September 13, 2001
    Date of Patent: November 4, 2003
    Assignee: Sekisui Chemical Co., Ltd.
    Inventors: Hideaki Ishizawa, Munehiro Hatai, Masakazu Nakata, Motohiro Yagi
  • Photocurable Pressure- Sensitive Adhesive Composition And Its sheet
    Publication number: 20030040550
    Abstract: An objective is to provide a pressure-sensitive adhesive composition which shows pressure-sensitive adhesive properties at ordinary temperature, has the ability to cure upon irradiation and after photocure exhibits improved bond strength relative to high-polarity adherends, such as PET, PVC and metals, and improved moist heat-resisting bond strength, a pressure-sensitive adhesive and a pressure-sensitive adhesive sheet obtained from the aforementioned pressure-sensitive adhesive composition.
    Type: Application
    Filed: September 13, 2001
    Publication date: February 27, 2003
    Inventors: Hideaki Ishizawa, Munehiro Hatai, Masakazu Nakata, Motohiro Yagi