Patents by Inventor Robert W. Novak

Robert W. Novak 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).

  • Use of alkenyl succinic anhydride compounds derived from symmetrical olefins in internal sizing for paper production
    Patent number: 7455751
    Abstract: A method of sizing paper for use in applications which require resistance to liquids comprising incorporating in the paper a size composition comprising one or more alkenyl succinic anhydride (ASA) compounds prepared from the reaction of maleic anhydride and one or more substantially symmetrical C20-C28 internal olefins.
    Type: Grant
    Filed: April 15, 2005
    Date of Patent: November 25, 2008
    Assignee: Nalco Company
    Inventors: William J. Ward, Krzysztof Andruszkiewicz, Ross T. Gray, Timothy Patrick McGinnis, Robert W. Novak
  • Papermaking process with improved drainage and retention
    Patent number: 5266164
    Abstract: The invention provides a method for improving the retention of mineral fillers and cellulose fibers on a cellulosic fiber sheet. The method comprising the steps of preparing a cellulose pulp slurry; adding before a shearing step an effective amount of a copolymer flocculant to the cellulose pulp slurry, the copolymer flocculant is a high molecular weight cationic copolymer of acrylamide and diallyl dimethyl ammonium chloride, the flocculant copolymer should contain from about 20 to about 60 mole percent diallyl dimethyl ammonium chloride mer units. After a shearing step adding an effective amount of a high molecular weight water-soluble anionic flocculant. A cellulosic fiber sheet is then formed from the cellulose pulp slurry which includes both the copolymer flocculant and anionic flocculant.
    Type: Grant
    Filed: November 13, 1992
    Date of Patent: November 30, 1993
    Assignee: Nalco Chemical Company
    Inventors: Robert W. Novak, Thomas C. Fallon
  • Emulsification of alkenyl succinic anhydride sizing agents
    Patent number: 4606773
    Abstract: Emulsion of alkenyl succinic anhydride sizing agents are prepared using a cationic water-soluble polymer and a cationic starch as an emulsifier.
    Type: Grant
    Filed: December 10, 1984
    Date of Patent: August 19, 1986
    Assignee: Nalco Chemical Company
    Inventor: Robert W. Novak
  • Stable isocyanic acid compositions
    Patent number: 4418047
    Abstract: Stable isocyanic acid compositions containing isocyanic acid in an organic solvent therefor, having a small amount of a labile halide compound, such as carbamoyl chloride.
    Type: Grant
    Filed: September 23, 1981
    Date of Patent: November 29, 1983
    Assignee: American Cyanamid Company
    Inventors: Steven L. Trenbeath, Robert W. Novak, Allan M. Feldman
  • Blocked isocyanate
    Patent number: 4374771
    Abstract: The novel compound, N,N'-methylenebis (hexahydro-2-oxo-1H-azepine-1-carboxamide) which is useful as a blocked isocyanate to introduce the functionality of methylene diisocyanate and which is prepared by the reaction of isocyanic acid and caprolactam followed by reaction with formaldehyde.
    Type: Grant
    Filed: March 8, 1982
    Date of Patent: February 22, 1983
    Assignee: American Cyanamid Company
    Inventors: Balwant Singh, Robert W. Novak
  • Method for drying isocyanic acid
    Patent number: 4374107
    Abstract: Removing water from wet isocyanic acid in organic solution of said isocyanic acid by addition hereto of a hydrogen halide or a compound which forms hydrogen halide in said solution in amount sufficient to provide a molar excess of hydrogen halide in said solution relative to the water, and ammonia if any, present in said solution.
    Type: Grant
    Filed: September 23, 1981
    Date of Patent: February 15, 1983
    Assignee: American Cyanamid Company
    Inventors: Steven L. Trenbeath, Robert W. Novak, Allan M. Feldman