Patents Assigned to Vistron Corporation
  • Stabilized brominated polyesters
    Patent number: 4024206
    Abstract: Unsaturated polyesters containing bromine in them are stabilized against coloring caused by exposure to ultraviolet light and clouding with age by including in them dimethyl methyl phosphonate.
    Type: Grant
    Filed: November 19, 1975
    Date of Patent: May 17, 1977
    Assignee: Vistron Corporation
    Inventors: Carl H. Fintelmann, Oscar C. Zaske
  • Method of making a molded brush back
    Patent number: 3996330
    Abstract: A finished plastic-handled brush is prepared by a single molding step involving gateless molding of the brush back by a tunnel-gating and novel punch-pin finishing apparatus and process which eliminates the usual gate stud, and removing the finished brush back and securing tufts of bristles in the face of the brush back to complete the brush construction.
    Type: Grant
    Filed: October 23, 1975
    Date of Patent: December 7, 1976
    Assignee: Vistron Corporation
    Inventors: Kenneth B. Jones, Walter C. Gorenflo
  • Apparatus for manufacturing brushes
    Patent number: 3936261
    Abstract: A finished plastic-handled brush is prepared by a single molding step involving gateless molding of the brush back by a tunnel-gating and novel punch-pin finishing apparatus and process which eliminates the usual gate stud, and removing the finished brush back and securing tufts of bristles in the face of the brush back to complete the brush construction.
    Type: Grant
    Filed: September 20, 1974
    Date of Patent: February 3, 1976
    Assignee: Vistron Corporation
    Inventors: Kenneth B. Jones, Walter C. Gorenflo