Patents by Inventor Soichi Tokizane

Soichi Tokizane 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).

  • Method of storing and searching chemical structure data
    Patent number: 4811217
    Abstract: Chemical structure data containing generic representation of component atoms in a storage device is searched by finding a match between a query structure and a stored candidate structure by mathematically comparing attribute data of chemical units of a query structure and attribute data of chemical unit of a stored candidate structure, where attribute data represent chemical characteristics of chemical units of those structures.
    Type: Grant
    Filed: March 25, 1986
    Date of Patent: March 7, 1989
    Assignee: Japan Association For International Chemical Information
    Inventors: Soichi Tokizane, Hideaki Chihara
  • Crosslinked organic polyamide or polyhydrazine permselective polymeric membranes
    Patent number: 4086215
    Abstract: Permselective membranes are prepared by crosslinking synthetic organic polyamides or polyhydrazides having --CO.sub.2 H groups and/or --SO.sub.3 H groups with a salt of metal selected from the class consisting of alkaline earth metals, transition metals, aluminum group metals and lead group metals.The membranes are useful in separating components of fluid mixtures or solutions such as water containing dissolved salts, and are especially useful in producing pure water from saline water.
    Type: Grant
    Filed: January 7, 1976
    Date of Patent: April 25, 1978
    Assignee: Toray Industries, Inc.
    Inventors: Masaru Kurihara, Soichi Tokizane, Tatsundo Tanaka, Masamitsu Tanimura, Yoichi Shimokawa