Patents by Inventor Baker N. Nimry

Baker N. Nimry 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).

  • Gypsum scale inhibitors for flue gas desulfurization systems
    Patent number: 4818506
    Abstract: Gypsum scale inhibitors useful under wet flue gas desulfurization (FGD) scrubber temperature and pH conditions. The gypsum inhibitors advantageously prevent or minimize gypsum scale formation and crystal growth in mist eliminator wash water and in the scrubber internals. Specific inhibitors contemplated include copolymers of modified acrylic acid/acrylamide; acrylic acid/vinyl acetate; acrylic acid/maleic anhydride; acrylic acid/acrylate ester; and combinations thereof. In addition, gypsum scale inhibitors comprising phosphonate-polymer blends of hexamethylene diamine tetra (methylene phosphonic acid) salts and polymaleate, poly(acrylic acid/ethylacrylate), poly(acrylic acid/N-methoxypropyl acrylamide/acrylamide), poly(acrylic acid/N-propyl acrylamide/acrylamide), and combinations thereof are also contemplated.
    Type: Grant
    Filed: January 15, 1988
    Date of Patent: April 4, 1989
    Assignee: Nalco Chemical Company
    Inventors: Mei-jan L. Lin, Richard J. Mouche, Baker N. Nimry, Dodd W. Fong
  • Polymers for prevention of fouling by iron oxides in cooling systems
    Patent number: 4434059
    Abstract: Industrial process cooling water systems are stabilized against iron precipitation by adding thereto an effective amount of an acrylic acid-acrylamide copolymer having specific weight ratios.
    Type: Grant
    Filed: November 18, 1982
    Date of Patent: February 28, 1984
    Inventors: Donald A. Johnson, Baker N. Nimry
  • Method for the oxidation of water-soluble sulfide compounds to higher oxidation states
    Patent number: 4292293
    Abstract: An improved method for the oxidation of water-soluble inorganic sulfide ions in aqueous systems is disclosed. The method uses a soluble metallic ion catalyst in the presence of an oxidizing agent. The improvement comprises adding to the system a water-soluble anionically-charged polymer having a molecular weight of from 1,000-100,000. Additionally, certain organic phosphonate materials can be used in combination with the polymer.By the use of the polymer or polymer-phosphonate treatment the efficiency of the metallic ion catalyst and the sulfide oxidation step is improved.
    Type: Grant
    Filed: July 28, 1980
    Date of Patent: September 29, 1981
    Assignee: Nalco Chemical Company
    Inventors: Donald A. Johnson, Baker N. Nimry