Patents by Inventor Kiyoshi Kanamaru

Kiyoshi Kanamaru 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).

  • Antimony trioxide composition and process of producing the same
    Patent number: 4100074
    Abstract: An antimony trioxide composition useful as an excellent flame retarding additive comprises antimony trioxide particles coated with hydrous zirconium oxide and amorphous silica.The antimony trioxide composition is prepared by adding an aqueous solution of a zirconium salt to an aqueous slurry of antimony trioxide particles to form zirconium hydroxide therein and to deposit the hydroxide on the surfaces of the antimony trioxide particles, recovering the particles and dehydrating them to form a coating of zirconium hydroxide on the particles, dispersing the hydrous zirconium oxide-coated particles in water, and then adding to the resulting aqueous dispersion a silica sol to deposit amorphous silica on the surfaces of the hydrous zirconium oxide coated antimony trioxide particles.
    Type: Grant
    Filed: August 5, 1976
    Date of Patent: July 11, 1978
    Assignees: Nippon Chemical Industrial Co., Ltd., Toho Ganryo Kogyo Co., Ltd.
    Inventors: Nobuyoshi Abe, Shigenaga Kubo, Kiyoshi Kanamaru