Patents by Inventor Hisao Shiozawa

Hisao Shiozawa 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).

  • Stable crystals of sodium bromite trihydrate
    Patent number: 4650658
    Abstract: NaBrO.sub.2.3H.sub.2 O crystals with excellent storage stability which contain at least 30 wt. % of NaBrO.sub.2.3H.sub.2 O and 0.5-5.0 wt. % of NaOH. The crystals are produced by precipitation from NaBrO.sub.2 solutions containing NaOH and impurities and are very useful as oxidizing and brominating agents.
    Type: Grant
    Filed: November 12, 1985
    Date of Patent: March 17, 1987
    Assignee: Nippon Silica Industrial Co., Ltd.
    Inventors: Hisao Shiozawa, Kihachiro Matsuda