Patents by Inventor Katsufumi Iiboshi

Katsufumi Iiboshi 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).

  • Removable ink composition and process for removing said ink composition from printed articles
    Patent number: 6147041
    Abstract: A removable ink composition comprising (A) at least one of a urethane resin and an acrylic resin and (B) a vehicle including as a main component one or more substances selected from the group consisting of a styrene-acrylic acid copolymer, a styrene-maleic acid resin, a rosin-maleic acid resin and a phenol resin. A process for removing an ink composition from printed articles which comprises treating articles printed with this ink composition with an aqueous alkali solution. Prints of the ink composition on plastic films and plastic containers can be removed and decolorized in a short time by treating the ink composition with a dilute aqueous alkali solution having a concentration of 1 to 3%.
    Type: Grant
    Filed: January 14, 1999
    Date of Patent: November 14, 2000
    Assignee: Dainichiseika Color & Chemicals Mfg. Co., Ltd.
    Inventors: Masayuki Takahashi, Yasuyuki Ogisu, Katsufumi Iiboshi, Masahiro Kondo, Takao Mizumoto, Kathufumi Awaya