Patents by Inventor Minematsu Nagashima

Minematsu Nagashima 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).

  • Heat-sensitive recording material
    Patent number: 4339492
    Abstract: A heat-sensitive recording material having a heat-sensitive layer composed mainly of a leuco dye, a phenolic compound and a water-soluble binding agent is characterized in that a combination of bisphenol A and p-phenylphenol is applied as the developer in a ratio by weight between 10:1 and 1:1, preferably 7:1 and 1:1.
    Type: Grant
    Filed: June 5, 1980
    Date of Patent: July 13, 1982
    Assignee: Sanyo-Kokusaku Pulp Co., Ltd.
    Inventors: Hisashi Mino, Masao Matsukawa, Minematsu Nagashima
  • Heat-sensitive recording material
    Patent number: 4321309
    Abstract: A heat-sensitive recording material having a heat-sensitive layer composed mainly of a leuco dye and a phenolic compound used as a developer, said heat-sensitive layer containing as a binding agent any one or combinations of polyvinyl alcohol, oxidized starch and etherized starch, and methyl cellulose in a ratio by weight between 98:2 and 90:10.
    Type: Grant
    Filed: May 27, 1980
    Date of Patent: March 23, 1982
    Assignee: Sanyo-Kokusaku Pulp Co., Ltd.
    Inventors: Hisashi Mino, Masao Matsukawa, Minematsu Nagashima