Patents by Inventor Masaaki Oyobe

Masaaki Oyobe 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).

  • Patent number: 4612189
    Abstract: Transparent and translucent dentifrice compositions improved in cleaning ability, stain removing ability and feeling are disclosed which comprise a mixture of an amorphous silica and an amorphous silicate containing at least 70% by weight of SiO.sub.2 which is partially inter-bonded with 1-10% by weight of an oxide of a metal selected from the group consisting of aluminum, magnesium and calcium and a transparent vehicle having substantially the same refractive index as that of the silica, the ratio of the silica to the silicate being in the range of 4:6 to 6:4 on a weight basis, the content of said mixture being in the range of 1 to 25% by weight of the composition, and the pH of the composition being in the range of 4.5 to 10.
    Type: Grant
    Filed: April 26, 1982
    Date of Patent: September 16, 1986
    Assignee: Lion Corporation
    Inventors: Masaaki Oyobe, Hiromichi Ichikawa, Tsutomu Maeyama