Patents by Inventor Francis J. Boylan

Francis J. Boylan 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).

  • Defoaming composition
    Patent number: 4626377
    Abstract: A synergistic, aqueous, free flowing defoaming composition comprising as the primary component an aqueous hydrophobic dispersion of an alcohol of 14-28 carbon atoms, a fatty acid of 14-28 carbon atoms, a soap of a fatty acid of 14-28 carbon atoms and a nonionic or anionic surfactant, and as a secondary component a dispersion of a hydrophobic solid in a water insoluble liquid.
    Type: Grant
    Filed: September 10, 1984
    Date of Patent: December 2, 1986
    Assignee: Drew Chemical Corporation
    Inventors: Ronald W. Kavchok, Francis J. Boylan, deceased
  • Defoaming composition
    Patent number: 4477370
    Abstract: A synergistic, aqueous, free flowing defoaming composition comprising as the primary component an aqueous hydrophobic dispersion of an alcohol of 14-28 carbon atoms, a fatty acid of 14-28 carbon atoms, a soap of a fatty acid of 14-28 carbon atoms and a nonionic or anionic surfactant, and as a secondary component a dispersion of a hydrophobic solid in a water insoluble organic liquid.
    Type: Grant
    Filed: April 15, 1983
    Date of Patent: October 16, 1984
    Assignee: Drew Chemical Corporation
    Inventors: Ronald W. Kavchok, Francis J. Boylan
  • Defoamer composition and use thereof
    Patent number: 4377493
    Abstract: A defoamer comprised of silica having hydrophobic surfaces dispersed in a water insoluble hydrophobic organic liquid, wherein the silica has a surface area of no greater than 0.1 m.sup.2 /g and the hydrophobic silica comprises in excess of 25 wt. percent of the composition.
    Type: Grant
    Filed: June 26, 1981
    Date of Patent: March 22, 1983
    Assignee: Drew Chemical Corporation
    Inventors: Francis J. Boylan, Clemmon Porter, Olga D. Bruno
  • Liquid defoamer and process of use thereof
    Patent number: 4340500
    Abstract: A free flowing aqueous defoamer comprised of alcohol, a fatty acid, a soap of a fatty acid and an anionic and/or non-ionic surfactant which prevents formation of a gelled mass of the solids and provides a free flowing dispersion of the solids in the water, with the solids contents being at least 5%, preferably at least 20%, all by weight. In a preferred embodiment, the composition includes a water soluble metal salt to render the surfaces of the solids hydrophobic. The defoamer has particular applicability for defoaming paper machine stock.
    Type: Grant
    Filed: March 2, 1981
    Date of Patent: July 20, 1982
    Assignee: Drew Chemical Corporation
    Inventor: Francis J. Boylan
  • Liquid defoamer and defoaming process
    Patent number: 4303549
    Abstract: A free flowing aqueous defoamer comprised of a solid alcohol, a solid fatty acid, a soap of a solid fatty acid and an anionic and/or non-ionic surfactant which prevents formation of a gelled mass of the solids and provides a free flowing dispersion of the solids in the water, with the solids contents being at least 5%, preferably at least 20%, all by weight, and with such solids having been treated to provide hydrophobic surfaces. A water soluble salt of a metal having a valence of greater than 1, such as aluminum, iron, magnesium, or calcium may be added to the composition to provide hydrophobic particle surfaces.
    Type: Grant
    Filed: March 31, 1980
    Date of Patent: December 1, 1981
    Assignee: Drew Chemical Corporation
    Inventor: Francis J. Boylan