Patents by Inventor FUMIKO ONUMA

FUMIKO ONUMA 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).

  • Resin composition for light guide article-preform, light guide article-preform, laminated light guide article-preform, light guide article for surface light source device and surface light source device
    Patent number: 9507077
    Abstract: A resin composition for a light guide article-preform is described, which enables the formation of a foamed layer having a large light scattering effect on the surface of a shaped article by laser irradiation processing at low cost. More specifically, the present invention relates to: a resin composition for a light guide article-preform, which contains a resin having a mass average molecular weight of 60,000 to 150,000, and has a 30% thermal mass reduction temperature of 310° C. or lower and a difference between a 40% thermal mass reduction temperature and a 20% thermal mass reduction temperature of 7° C. or less when a thermal mass measurement is performed with starting from the state at 100° C. under air at a temperature rising rate of 5° C./min.
    Type: Grant
    Filed: June 5, 2013
    Date of Patent: November 29, 2016
    Assignee: MITSUBISHI RAYON CO., LTD.
    Inventors: Fumiko Onuma, Minoru Shimizu, Kenji Yagi, Tomoyoshi Yamashita, Youhei Sechi, Yoshiya Kurachi, Shinji Saiki
  • RESIN COMPOSITION FOR LIGHT GUIDE ARTICLE-PREFORM, LIGHT GUIDE ARTICLE-PREFORM, LAMINATED LIGHT GUIDE ARTICLE-PREFORM, LIGHT GUIDE ARTICLE FOR SURFACE LIGHT SOURCE DEVICE AND SURFACE LIGHT SOURCE DEVICE
    Publication number: 20150338568
    Abstract: A resin composition for a light guide article-preform is described, which enables the formation of a foamed layer having a large light scattering effect on the surface of a shaped article by laser irradiation processing at low cost. More specifically, the present invention relates to: a resin composition for a light guide article-preform, which contains a resin having a mass average molecular weight of 60,000 to 150,000, and has a 30% thermal mass reduction temperature of 310° C. or lower and a difference between a 40% thermal mass reduction temperature and a 20% thermal mass reduction temperature of 7° C. or less when a thermal mass measurement is performed with starting from the state at 100° C. under air at a temperature rising rate of 5° C./min.
    Type: Application
    Filed: June 5, 2013
    Publication date: November 26, 2015
    Inventors: FUMIKO ONUMA, MINORU SHIMIZU, KENJI YAGI, TOMOYOSHI YAMASHITA, YOUHEI SECHI, YOSHIYA KURACHI, SHINJI SAIKI