Patents by Inventor Yasuji Minami

Yasuji Minami 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).

  • Organophosphorus compounds for dental polymerizable compositions
    Patent number: 6458868
    Abstract: An organic phosphate compound having at least one radically polymerizable double bond, at least one phosphate residue having one or two hydroxyl groups, and at least one hydrocarbon group having 4 or more carbon atoms in a molecule, wherein a 10% by weight methanol solution of the organic phosphate compound has an electric conductivity at 25° C. of 0.5 mS/cm or less, and/or the organic phosphate compound has a light transmittance at 455 nm of 90% or more; a process for preparing the organic phosphate compound; a dental polymerizable composition comprising (a) the organic phosphate compound and (b) a polymerizable monomer capable of copolymerizing with the organic phosphate compound.
    Type: Grant
    Filed: November 30, 2000
    Date of Patent: October 1, 2002
    Assignee: Kuraray Co., Ltd.
    Inventors: Koichi Okada, Junichi Ohtsuki, Koji Takahashi, Yasuji Minami, Eiichi Terakawa, Miho Harada