Patents Assigned to Fujimi Abrasives Co., Ltd.
  • Patent number: 5104421
    Abstract: A polishing method and abrasive pads used to polish of abrade, for example, lenses. The pad is manufactured with an abrasives such as grains of the mean diameter: 0.5-10 .mu.m of alumina, zirconium oxide, tin oxide, and cerium oxide, a kind of water-soluble cellulose ether selected from the group of hydroxypropylmethyl and the like, and a kind of insolubilizing agent such as glyoxal, citric acid, and the like. The substances above are blended and coated on a sheet-like substrate. In polishing process, only water is poured between the rotating abrasives pad and goods to be polished.
    Type: Grant
    Filed: November 14, 1990
    Date of Patent: April 14, 1992
    Assignee: Fujimi Abrasives Co., Ltd.
    Inventors: Gisaburo Takizawa, Tetsushi Senda, Shiro Miura