Patents by Inventor Maruyama, Hiromi

Maruyama, Hiromi 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).

  • Process of producing hydroxypropyl cellulose
    Patent number: 4292426
    Abstract: Hydroxypropyl cellulose having superior solubility in isopropyl alcohol is obtained by reacting an alkali cellulose of unusually low NaOH/cellulose and water/cellulose ratios with propylene oxide in two stage successive reactions interposing an addition of water.
    Type: Grant
    Filed: May 7, 1980
    Date of Patent: September 29, 1981
    Assignee: Nippon Soda Company Limited
    Inventors: Seiji Orii, Yukio Sasagawa, Akinori Ito, Maruyama, Hiromi, Yoshiteru Sakai