Patents by Inventor Hitoshi Naganuma

Hitoshi Naganuma 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).

  • Product check system and product check method
    Publication number: 20040044562
    Abstract: A survey burden is reduced on a material manufacturer side, while survey items are easily changed on a material purchaser side.
    Type: Application
    Filed: July 24, 2003
    Publication date: March 4, 2004
    Inventors: Takayoshi Ueno, Hiroshi Onishi, Yuka Okada, Narito Shibaike, Hitoshi Naganuma, Tetsuji Kawakami
  • Potentially hydrophilic resins and compositions comprising the same
    Patent number: 6465595
    Abstract: A potentially hydrophilic resin comprises at least monomer units readily saponifiable under alkaline conditions to form carboxyl groups, carboxyl-containing monomer units, and hydroxyl-containing monomer units. A potentially hydrophilic resin composition comprises, in a liquid medium, the potentially hydrophilic and an adhesive component or film-forming component. A recycling method is provided for an article with a coating applied on a surface thereof. According to the recycling method, the coating on the surface of the article is formed with the potentially hydrophilic resin composition, and subsequent to use of the article, the article is treated with alkaline water to saponify methyl acrylate in the coating such that the coating is caused to swell, and the coating so swollen is removed from the article.
    Type: Grant
    Filed: March 13, 2000
    Date of Patent: October 15, 2002
    Assignee: Dainichiseika Color & Chemicals Mfg. Co., Ltd.
    Inventors: Minoru Takizawa, Hitoshi Naganuma, Michiei Nakamura, Naomi Oguma