Patents by Inventor Glen B. Regan

Glen B. Regan 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).

  • Polishing slurry of xanthan gum and a dispersing agent
    Patent number: 4161394
    Abstract: A solution for use in suspending 0.05 to 15 micron ceria or alumina particles to produce a slurry for polishing lenses and semiconductor wafers is disclosed. The solution consists of water containing from 0.06 to 0.75 percent by weight of xanthan gum and from 0.5 to 5.0 percent by weight of a dispersing agent selected from the group consisting of the condensate of formaldehyde with naphthalene monosulfonic acid, polymethacrylic acid and their ammonium and alkali metal salts. The slurry is prepared by mixing one volume of the solution with about two volumes of water and then dispersing alumina, ceria, or zirconia particles in the resultant mixture. The quantity of ceria or alumina dispersed is in the range 10 to 20 percent by weight based on the combined weight of solution and added water.
    Type: Grant
    Filed: June 19, 1978
    Date of Patent: July 17, 1979
    Inventor: Glen B. Regan
  • Denture cleaning concentrate
    Patent number: 4016089
    Abstract: A denture cleaning concentrate containing orthophosphoric acid, nonionic detergent, a quaternary ammonium germicide and an indicator which undergoes a color change in the pH range 4 to 4.6 is described.
    Type: Grant
    Filed: November 11, 1974
    Date of Patent: April 5, 1977
    Inventors: Glen B. Regan, Barrier F. Regan