Patents by Inventor Akira Ohtsuga

Akira Ohtsuga 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).

  • Dried aluminum hydroxide gel, a method for preparing the dried gel, and an antacid
    Patent number: 5461082
    Abstract: The object of the present invention is to prepare a dried aluminum hydroxide gel featuring excellent acid neutrizing capacity, but which is also stable.A dried aluminum hydroxide gel with a chemical composition represented by the following general formulas:(M.sub.2 O).sub.x Al.sub.2 O.sub.3 (CO.sub.2).sub.y R.sub.z.mH.sub.2 O or[(M.sub.2 O).sub.x1 (CaO).sub.x2 (MgO).sub.x3 ]Al.sub.2 O.sub.3 (CO.sub.2).sub.y R.sub.z.mH.sub.2 O(wherein M is a monovalent alkali metal and R is an organic acid with a valence of two or more. As a result of its organic acid content, the gel is stable and can have a grater aluminum content, thus improving the acid neutrizing capacity of the gel.
    Type: Grant
    Filed: July 8, 1994
    Date of Patent: October 24, 1995
    Assignee: Fuji Chemical Industry Co., Ltd.
    Inventors: Hitoshi Machimura, Hiroshi Kawaguchi, Akira Ohtsuga