Patents by Inventor Kostan B. Charkhutian

Kostan B. Charkhutian 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).

  • Metal oxides dispersant composition
    Patent number: 7857989
    Abstract: This invention relates to metal oxides dispersant compositions comprising (a) certain a metal oxides dispersant, and (b) an oxime. The invention also relates to a process for dispersing metal oxides in an aqueous system that involves adding the dispersant composition to the aqueous system.
    Type: Grant
    Filed: March 13, 2007
    Date of Patent: December 28, 2010
    Assignee: Ashland Licensing and Intellectual Property LLC
    Inventors: Edward S. Beardwood, Kostan B. Charkhutian
  • Metal oxides dispersant composition
    Patent number: 7204937
    Abstract: This invention relates to metal oxides dispersant compositions comprising (a) certain a metal oxides dispersant, and (b) an oxime. The invention also relates to a process for dispersing metal oxides in an aqueous system that involves adding the dispersant composition to the aqueous system.
    Type: Grant
    Filed: January 10, 2003
    Date of Patent: April 17, 2007
    Assignee: Ashland Licensing and Intellectual Property LLC
    Inventors: Edward S. Beardwood, Kostan B. Charkhutian
  • Process for inhibiting scale and fouling on the metal surfaces exposed to an aqeuous system
    Patent number: 6797177
    Abstract: This invention relates to a process for inhibiting scale and fouling on metal surfaces exposed to an aqueous system, particularly a circulating aqueous system. The process comprises adding glutamic acid N,N diacetic acid, or salts thereof, to the aqueous system. Glutamic acid N,N diacetic acid, or salts thereof, act as a chelating agent and is biodegradable. The process is particularly useful for inhibiting the formation of scale and fouling on metal surfaces of steam generating and cooling systems.
    Type: Grant
    Filed: July 18, 2002
    Date of Patent: September 28, 2004
    Assignee: Ashland Inc.
    Inventors: Kostan B. Charkhutian, Bruce L. Libutti, Frank L. M. De Cordt, John S. Ruffini
  • Process for inhibiting scale and fouling on the metal surfaces exposed to an aqeuous system
    Publication number: 20040011743
    Abstract: This invention relates to a process for inhibiting scale and fouling on metal surfaces exposed to an aqueous system, particularly a circulating aqueous system. The process comprises adding glutamic acid N,N diacetic acid, or salts thereof, to the aqueous system. Glutamic acid N,N diacetic acid, or salts thereof, act as a chelating agent and is biodegradable. The process is particularly useful for inhibiting the formation of scale and fouling on metal surfaces of steam generating and cooling systems.
    Type: Application
    Filed: July 18, 2002
    Publication date: January 22, 2004
    Inventors: Kostan B. Charkhutian, Bruce L. Libutti, Frank L. M. De Cordt, John S. Ruffini
  • Composition for removing dissolved oxygen from a fluid
    Patent number: 6669853
    Abstract: This invention relates to compositions, which are useful in removing dissolved oxygen from a fluid stream, preferably an aqueous stream. The compositions comprise blend of an oxime and a primary hydroxylamine. This invention also relates to a process for removing oxygen from an aqueous system, which comprises adding an oxime and a primary hydroxylamine to a fluid system.
    Type: Grant
    Filed: August 9, 2001
    Date of Patent: December 30, 2003
    Assignee: Ashland Inc.
    Inventors: Kostan B. Charkhutian, Bruce L. Libutti, Frank L. M. De Cordt, Martti Samuli Ahomäki
  • Metal oxides dispersant composition
    Publication number: 20030129078
    Abstract: This invention relates to metal oxides dispersant compositions comprising (a) certain a metal oxides dispersant, and (b) an oxime. The invention also relates to a process for dispersing metal oxides in an aqueous system that involves adding the dispersant composition to the aqueous system.
    Type: Application
    Filed: January 10, 2003
    Publication date: July 10, 2003
    Applicant: Ashland Inc.
    Inventors: Edward S. Beardwood, Kostan B. Charkhutian
  • Metal oxides dispersant composition
    Publication number: 20030085175
    Abstract: This invention relates to metal oxides dispersant compositions comprising (a) certain a metal oxides dispersant, and (b) an oxime. The invention also relates to a process for dispersing metal oxides in an aqueous system that involves adding the dispersant composition to the aqueous system.
    Type: Application
    Filed: February 21, 2001
    Publication date: May 8, 2003
    Inventors: Edward S. Beardwood, Kostan B. Charkhutian
  • Composition for removing dissloved oxygen from a fluid
    Publication number: 20030047520
    Abstract: This invention relates to compositions, which are useful in removing dissolved oxygen from a fluid stream, preferably an aqueous stream. The compositions comprise blend of an oxime and a primary hydroxylamine. This invention also relates to a process for removing oxygen from an aqueous system, which comprises adding an oxime and a primary hydroxylamine to a fluid system.
    Type: Application
    Filed: August 9, 2001
    Publication date: March 13, 2003
    Inventors: Kostan B. Charkhutian, Bruce L. Libutti, Frank L. M. De Cordt, Martti Samuli Ahomaki
  • Process for dispersing iron oxide in steam generating boilers
    Patent number: 6337047
    Abstract: This invention relates to a process for dispersing corrosion products, specifically iron oxide, in steam generating boilers. Improved dispersion is achieved by adding a dispersant to a feedpoint of the steam generating boiler where the composition comprises: (a) a copolymer of sulfonated styrene and maleic anhydride or maleic acid; and (b) diethylenetriamine penta (methylene phosphonic acid).
    Type: Grant
    Filed: October 30, 1998
    Date of Patent: January 8, 2002
    Assignee: Ashland Inc.
    Inventors: Kostan B. Charkhutian, Bruce L. Libutti, Kaj D. Rondum