Patents by Inventor Noboru Kuzuba

Noboru Kuzuba 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).

  • Fluorescent colored resin particles and process for preparation thereof
    Patent number: 4016133
    Abstract: Colored resin particles which are colored uniformly and densely and are excellent in fluorescence, light fastness and washing resistance are prepared by copolymerizing in an aqueous medium in the presence of a water-soluble fluorescent dye (1) a polymerizable unsaturated monomer A having a low affinity for the fluorescent dye, (2) a polymerizable unsaturated monomer B having at least one cyano group and (3) a polymerizable unsaturated monomer C having a high affinity for the fluorescent dye and being insoluble or barely soluble in water, which is represented by the following general formula ##STR1## wherein X is a hydrogen atom or a methyl group.
    Type: Grant
    Filed: September 3, 1975
    Date of Patent: April 5, 1977
    Assignee: Sinloihi Co.
    Inventors: Yoshihiko Hyosu, Eiiti Miyashita, Noboru Kuzuba, Sadayasu Miyahara, Ryoshiro Takano