Patents by Inventor Manian Ramesh

Manian Ramesh 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).

  • Dispersion polymers for oil field water clarification
    Patent number: 5330650
    Abstract: One aspect of the invention provides a method of removing emulsified oil from oil field produced water. According to the method, the oil-containing water is treated with an effective amount of a dispersion of a water-soluble cationic polymer.
    Type: Grant
    Filed: October 30, 1992
    Date of Patent: July 19, 1994
    Assignee: Nalco Chemical Company
    Inventors: Norman E. Byrne, Robert A. Marble, Manian Ramesh
  • Hydrophobic polyelectrolytes used in color removal
    Patent number: 5314627
    Abstract: A hydrophobic polyelectrolyte copolymer which is useful in the removal of color in paper mill waste water. The copolymer preferably comprises an acrylamide and a hydrophobic monomer selected from the group consisting of quaternized dimethylaminoethylacrylates and quaternized dimethylaminoethylmethacrylates.
    Type: Grant
    Filed: September 13, 1993
    Date of Patent: May 24, 1994
    Assignee: Nalco Chemical Company
    Inventors: Manian Ramesh, Chandrashekar S. Shetty, Martha R. Finck
  • Hydrophobic polyelectrolytes used in color removal
    Patent number: 5292793
    Abstract: A hydrophobic polyelectrolyte copolymer which is useful in the removal of color in paper mill waste water. The copolymer preferably comprises an acrylamide and a hydrophobic monomer selected from the group consisting of quaternized dimethylaminoethylacrylates and quaternized dimethylaminoethylmethacrylates.
    Type: Grant
    Filed: July 14, 1992
    Date of Patent: March 8, 1994
    Assignee: Nalco Chemical Company
    Inventors: Manian Ramesh, Chandrashekar S. Shetty, Martha R. Finck
  • Hydrophobic polyelectrolytes used in removing color
    Patent number: 5283306
    Abstract: A hydrophobic polyelectrolyte copolymer which is useful in the removal of color in paper mill waste water. The copolymer preferably comprises diallyldimethylammonium chloride and a hydrophobic monomer selected from the group consisting of quaternized dimethylaminoethylacrylates and quaternized dimethylaminoethylmethacrylates.
    Type: Grant
    Filed: August 26, 1992
    Date of Patent: February 1, 1994
    Assignee: Nalco Chemical Company
    Inventors: Manian Ramesh, John W. Sparapany, Martha R. Finck, Kristine S. Siefert, Chandrashekar S. Shetty
  • Hydrophobic polyelectrolyte coagulants for the control of pitch in pulp and paper systems
    Patent number: 5246547
    Abstract: A method for controlling pitch in papermaking systems which comprises the step of adding a hydrophobic polyelectrolyte copolymer coagulant to pulp and paper process water. The hydrophobic polyelectrolyte copolymer coagulant comprises diallyldimethylammonium chloride and a hydrophobic monomer selected from the group consisting of: quaternized dimethylaminoethylacrylates and quaternized dimethylaminoethylmethacrylates.
    Type: Grant
    Filed: July 14, 1992
    Date of Patent: September 21, 1993
    Assignee: Nalco Chemical Company
    Inventors: Martha R. Finck, Carol S. Greer, Manian Ramesh
  • Pulp and paper mill wastewater color removal
    Patent number: 5200089
    Abstract: The invention provides a method for decolorizing an effluent stream from a pulp mill plant comprising the step of adding an effective amount of a decolorizing composition including a ferrous sulfate and a water-soluble cationic amine polymer.
    Type: Grant
    Filed: August 12, 1991
    Date of Patent: April 6, 1993
    Assignee: Nalco Chemical Company
    Inventors: Kristine S. Siefert, Manian Ramesh, Martha R. Finck, Chandrashekar S. Shetty