Patents by Inventor Joseph Doolan

Joseph Doolan 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).

  • Polyurethane thickeners useful for clear and high gloss aqueous based systems a process for providing rheological properties to clear aqeous-based systems using such thickeners and clear aqueous-based systems containing such thickeners
    Patent number: 5973063
    Abstract: The present invention relates to improved thickening compositions, often referred to as Theological additives, used to provide viscosity control, flow, leveling and other rheological properties to clear aqueous systems such as automotive clear-coat paints and coatings. The invention hereof involves the synthesis of a new family of Theological additives by combining, through a reaction process, chemicals used to make specified polyurethane polymer compositions. These novel copolymers provides the good flow and leveling and gloss retention that polyurethane associative thickeners impart to water-based systems, without the loss of clarity that such polymers have caused in the past. Levels of the rheological thickening composition, varying between about 0.01% and about 10%, based on the total weight of the system to be thickened, have been found to be useful to create novel clear aqueous systems containing such thickening compositions.
    Type: Grant
    Filed: September 24, 1997
    Date of Patent: October 26, 1999
    Assignee: Rheox, Inc.
    Inventors: Joseph Doolan, Charles Cody, Wilbur Mardis, Anthony Ricci, Fred Whitton
  • Aqueous construction compositions with improved water retention properties and a process for providing water retention properties to aqueous construction compositions
    Patent number: 5863975
    Abstract: Water retention additives for aqueous construction systems including joint compounds are described which are the reaction product of monomers comprising carboxylic acid monomers, nonionic vinyl monomers and specific surfactant monomers. Processes for making such polymers are described as well as the use of aqueous construction systems using the polymers. The polymers are useful in joint compounds and a broad range of similar construction systems as cellulosic replacements.
    Type: Grant
    Filed: February 6, 1997
    Date of Patent: January 26, 1999
    Assignee: Rheox Inc.
    Inventors: Fred Whitton, Joseph Doolan