Patents by Inventor Masashi Nakamaru

Masashi Nakamaru 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).

  • Near Infrared Ray Absorbing Filter, Optical Filter for Plasma Display and Plasma Display Panel
    Publication number: 20090009899
    Abstract: A near infrared ray absorbing filter is a film gained by biaxially oriented polyester having a near infrared ray absorbing agent, and the melting point of this polyester is no higher than 230° C. The optical filter for a plasma display is provided with a near infrared ray blocking layer made of polyester containing a near infrared ray absorbing agent and an image quality correcting layer made of polyester containing a compound which absorbs visible light having an absorption maximum wavelength in a range from 560 nm to 600 nm. These layers are layered through an integrated process by means of a co-extrusion method, according to which these layers are melted and extruded together from a co-extrusion process, and thus, a biaxially oriented film is formed. The melting point of the polyester in these layers is no higher than 230° C.
    Type: Application
    Filed: February 15, 2006
    Publication date: January 8, 2009
    Applicant: MITSUBISHI POLYESTER FILM CORPORATION
    Inventors: Masashi Nakamaru, Takatoshi Miki