Patents by Inventor Tom N. Demopolis

Tom N. Demopolis 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).

  • Publication number: 20180134846
    Abstract: Compositions comprising a polyamidopolyamine and/or a non-poly-meric amidoamine are disclosed for imparting multiple desired characteristics to a variety of industrial compositions. In certain embodiments, these compositions are prepared by condensing a C4 to C16 poly basic acid, monobasic acid or derivative thereof with a polyamine comprising a primary amino group, and in the presence of an optional organic diluent. Certain specific polyamidopolyamine and a non-polymeric amidoamine formulae and compositions containing same are disclosed, as are methods of use of these compositions.
    Type: Application
    Filed: April 14, 2016
    Publication date: May 17, 2018
    Applicant: Houghton Technical Corporation
    Inventors: Joseph F. Warchol, Joseph F. Barbieri, Tom N. Demopolis, John P. Kroetz, Qi Wang, Alla M. Petlyuk, Valarie Yvonne Pearson
  • Patent number: 8460553
    Abstract: The invention provides the combined use of UF and MVR for the treatment of industrial process fluid wastewater that contains recoverable material. The recoverable material desirably has a molecular diameter of less than about 5 to 6 nm and a boiling point of less than about 200 ° C. In one embodiment, the recoverable material may then be utilized in the preparation of another industrial process fluid. In another embodiment, the recoverable material is isolated and retained for later use. The invention thereby provides aqueous industrial process fluid which contains water; one or more of an emulsifier, oil, amine, biocide, thickener, lubricant, dispersant, antioxidant, corrosion inhibitor, alkaline compound, surfactant, and carrier; and one or more chemical compounds recovered from aqueous industrial process fluid wastewater treated with UF and MVR.
    Type: Grant
    Filed: June 24, 2008
    Date of Patent: June 11, 2013
    Assignee: Houghton Technical Corp.
    Inventors: John Michael Burke, Joseph F. Warchol, Tom N. Demopolis
  • Publication number: 20110021837
    Abstract: The invention provides the combined use of UF and MVR for the treatment of industrial process fluid wastewater that contains recoverable material. The recoverable material desirably has a molecular diameter of less than about 5 to 6 nm and a boiling point of less than about 200° C. In one embodiment, the recoverable material may then be utilized in the preparation of another industrial process fluid. In another embodiment, the recoverable material is isolated and retained for later use. The invention thereby provides aqueous industrial process fluid which contains water; one or more of an emulsifier, oil, amine, biocide, thickener, lubricant, dispersant, antioxidant, corrosion inhibitor, alkaline compound, surfactant, and carrier; and one or more chemical compounds recovered from aqueous industrial process fluid wastewater treated with UF and MVR.
    Type: Application
    Filed: June 24, 2008
    Publication date: January 27, 2011
    Inventors: John Michael Burke, Joseph F. Warchol, Tom N. Demopolis
  • Patent number: 5512604
    Abstract: Novel porous copolymers are disclosed which can be used to prepare ion-exchange resins and polymeric adsorbents. The copolymers comprise a copolymer of at least one monovinylidene monomer and a crosslinking monomer and have a unique cellular pore structure. The cellular structure comprises a macroporous void phase which is dispersed within a continuous copolymer phase. The porous void phase comprises a plurality of cellular void spaces which are at least partially enclosed by walls of the continuous copolymer phase. Also disclosed are processes which can be used to prepare the porous copolymers, as well as ion-exchange resins and polymeric adsorbents using the porous copolymers.
    Type: Grant
    Filed: August 28, 1992
    Date of Patent: April 30, 1996
    Assignee: The Dow Chemical Company
    Inventor: Tom N. Demopolis
  • Patent number: 5288307
    Abstract: Hydrocarbon emissions from fuel reservoirs, particularly those associated with motor vehicles, are abated by contacting a vented hydrocarbon fuel vapor stream from the reservoirs with a polymeric adsorbent derived from a macroporous or macroreticular copolymer of at least one monovinylidene aromatic monomer and a crosslinking monomer. The macroporous copolymers are converted into suitable adsorbents by post-polymerization crosslinking in a swollen state in the presence of a Friedel-Crafts catalyst. The resulting adsorbent has improved hydrocarbon adsorption capacity relative to conventional activated carbon adsorbents.
    Type: Grant
    Filed: August 28, 1992
    Date of Patent: February 22, 1994
    Assignee: The Dow Chemical Company
    Inventors: H. Robert Goltz, Tom N. Demopolis