Patents by Inventor Toshihro Kasai

Toshihro Kasai 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-ceramic microspheres that impart yellow color to retroreflected light
    Patent number: 6479417
    Abstract: The present invention relates to transparent microspheres (i.e., beads) that impart yellow color to retroreflected light. The microsphere preferably comprise titania plus alumina, zirconia, and/or silica and iron oxide, manganese oxide, or mixtures thereof. More particularly, the present invention relates to fused microspheres that impart yellow color to retroreflected light having both transparency and mechanical properties suitable, for example, for lens elements in retroreflective articles.
    Type: Grant
    Filed: January 18, 2001
    Date of Patent: November 12, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: Matthew H. Frey, Charles J. Studiner, III, Kenton D. Budd, Toshihro Kasai, Stephen B. Roscoe, Chikafumi Yokoyama, John E. Bailey
  • Glass-ceramic microspheres that impart yellow color to retroreflected light
    Publication number: 20020013207
    Abstract: The present invention relates to transparent microspheres (i.e., beads) that impart yellow color to retroreflected light. The microsphere preferably comprise titania plus alumina, zirconia, and/or silica and iron oxide, manganese oxide, or mixtures thereof. More particularly, the present invention relates to fused microspheres that impart yellow color to retroreflected light having both transparency and mechanical properties suitable, for example, for lens elements in retroreflective articles.
    Type: Application
    Filed: January 18, 2001
    Publication date: January 31, 2002
    Applicant: 3M Innovative Properties Company
    Inventors: Matthew H. Frey, Charles J. Studiner, Kenton D. Budd, Toshihro Kasai, Stephen B. Roscoe, Chikafumi Yokoyama, John E. Bailey