Patents by Inventor Hiroko Fujino

Hiroko Fujino 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).

  • Electrolytic solution for Karl Fischer coulometric titration
    Patent number: 4368105
    Abstract: There is disclosed an electrolytic solution for Karl Fischer method comprising chloroform and an alkylene carbonate as solvent and iodine or an iodide, sulfur dioxide, pyridine and a small amount of an alcohol. The solution is suitable for use in determination of water by Karl Fischer titration method as a generating medium.
    Type: Grant
    Filed: January 21, 1981
    Date of Patent: January 11, 1983
    Assignee: Mitsubishi Chemical Industries Limited
    Inventors: Kaname Muroi, Hiroko Fujino
  • Karl-Fischer Reagent
    Patent number: 4351744
    Abstract: There is disclosed a Karl-Fischer reagent which consists essentially of iodide, sulfur dioxide, pyridine and an alkylene carbonate of the formula: ##STR1## wherein R represents a hydrogen atom and a lower alkyl group. The reagent is superior in its high stability and a low iodine content.
    Type: Grant
    Filed: October 1, 1980
    Date of Patent: September 28, 1982
    Assignee: Mitsubishi Chemical Industries Limited
    Inventors: Kaname Muroi, Hiroko Fujino