Patents by Inventor Yuko Ohmachi

Yuko Ohmachi 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).

  • Analytical element
    Patent number: 4557901
    Abstract: An analytical element for use in analysis of a component in an aqueous fluid, comprising(a) a light-transmissive support;(b) a reagent layer; and(c) a porous spreading layer,being characterized in that the reagent layer contains a substantially water-dispersible copolymer obtained by copolymerization of at least one copolymerizable monomer, which is water soluble and has a nonionizable group in the side chain, with at least one copolymerizable hydrophobic monomer.The analytical element of this invention is good with less formation of fogging, higher in color forming density and indicating higher sensitivity.
    Type: Grant
    Filed: October 29, 1982
    Date of Patent: December 10, 1985
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Mikio Koyama, Kenichiro Okaniwa, Masakuni Saruhashi, Yuko Ohmachi