Patents by Inventor Hideo Naotsuka

Hideo Naotsuka 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).

  • Fiber-supported ion exchanger
    Patent number: 4331541
    Abstract: Ion exchange materials are prepared by retaining a vinyl monomer solution within the interstices of a fiber structure, such as a woven or non-woven fabric, polymerizing these monomers in the presence of an organic solvent sparingly soluble or totally insoluble in water to form a macroreticular polymer, and functionalizing the macroreticular polymer with an ion exchange functional group.
    Type: Grant
    Filed: March 3, 1980
    Date of Patent: May 25, 1982
    Assignee: Rohm and Haas Company
    Inventors: Hiroshi Akiyama, Hideo Naotsuka