Patents by Inventor Tetsuya AKASHIMA

Tetsuya AKASHIMA 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).

  • GLASS PLATE, LIGHT GUIDE PLATE UNIT, PLANAR LIGHT-EMITTING DEVICE, AND LIQUID CRYSTAL DISPLAY DEVICE
    Publication number: 20180321434
    Abstract: A glass plate, which has a content of total iron as calculated as Fe2O3 of 5 to 50 ppm and a content of Fe2+ in total iron as calculated as Fe2O3 of from 0.02 to 20 ppm, where the effective optical path length is a distance from an edge surface from which light enters the glass plate to an edge surface on the opposite side, and the composition of the glass plate except for iron substantially contains, as represented by mass percentage based on oxides, from 45 to 80% of SiO2, more than 7% and at most 30% of Al2O3, from 0 to 15% of B2O3, from 0 to 15% of MgO, from 0 to 10% of CaO, from 0 to 20% of Na2O, from 0 to 10% of K2O and from 0 to 10% of ZrO2.
    Type: Application
    Filed: July 10, 2018
    Publication date: November 8, 2018
    Applicant: Asahi Glass Company, Limited
    Inventors: Hiroyuki HIJIYA, Yusuke ARAI, Yutaka KUROIWA, Tetsuya AKASHIMA, Yuki KONDO