Patents by Inventor Aritatsu Masaoka

Aritatsu Masaoka 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).

  • Anaerobically curable sealing composition
    Patent number: 4417040
    Abstract: An anaerobically curable sealing composition comprising a polymerizable monomer (A) consisting of an acrylic ester or a methacrylic ester, and 3,6,6,9,9-pentamethyl-3-n-butyl-1,2,4,5-tetraoxacyclonine (B) as a polymerization initiator, characterized in that the amount of ratio of said (A) and (B) being:(A) 99.95-80 parts by weight,(B) 20-0.05 parts by weight,whereby, providing to the composition better anaerobic characteristics and storage stability.
    Type: Grant
    Filed: November 12, 1981
    Date of Patent: November 22, 1983
    Assignee: Three Bond Co., Ltd.
    Inventors: Yasuhumi Okamura, Aritatsu Masaoka, Kazutaka Kishita