Patents by Inventor Taiji Hiraoka

Taiji Hiraoka 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).

  • Chromatographic analysis for anions involving complexing anions with a polyhydric alcohol
    Patent number: 4507390
    Abstract: Process for analyzing anions in a liquid by means of an ion exchanger and by complex formation with specific anions by addition of polyhydric alcohol. Sensitivity is increased owing to the fact that the complex of specific anions with polyhydric alcohol has a high activity as acid.
    Type: Grant
    Filed: March 13, 1981
    Date of Patent: March 26, 1985
    Assignee: Hitachi, Ltd.
    Inventors: Susumu Horiuchi, Taiji Hiraoka, Toru Saito