Patents by Inventor Henry T. Bromley

Henry T. Bromley 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).

  • Patent number: 4911830
    Abstract: A low plate-out fluorescent pigment concentrate containing from about 5 up to about 40 weight percent of a fluorescent pigment, based upon the total weight of the fluorescent pigment concentrate, about 5 to about 20 weight percent of an inorganic filler, based upon the total weight of the fluorescent pigment concentrate, and a minimum of 2 up to about 10 weight percent of a silica gel or a precipitated silica, based upon the total weight of the fluorescent pigment concentrate. The inert filler has an average particle size of about 2 microns or less. There is also from about 1 to about 10 weight percent of an organic polymer selected from the group consisting of (i) an oxidized polyethylene wax, (ii) an unoxidized polyethylene wax, (iii) a low molecular weight ethylene-acrylic acid copolymer, (iv) a bivalent metal salt of (1) or (iii), and (v) a combination of at least two of (i), (ii), (iii) and (iv), based upon the total weight of the fluorescent pigment concentrate.
    Type: Grant
    Filed: May 26, 1988
    Date of Patent: March 27, 1990
    Assignee: PMS Consolidated
    Inventors: Henry T. Bromley, Craig J. Bastian