Patents by Inventor Sanjay Kalhan

Sanjay Kalhan 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).

  • Patent number: 7358217
    Abstract: Quenching oil compositions comprising (1) an oil having kinematic viscosity (ASTM Test Method D-445) at 40° C. ranging from about 4 to about 45 mm2sec?1 (about 40 to about 210 Saybolt Universal Seconds (SUS)) and having a saturated content from about 80% to about 100%; and (2) an alkali metal salt of saligenin derivative and optionally, further comprising at least one of (3) an aliphatic polyolefin having Mn ranging from about 300 to about 10,000; (4) at least one member selected from the group consisting of metal salts of hydrocarbyl substituted phenols, salicylic acids, carboxylic acids, and sulfonic acids; and (5) at least one member selected from the group consisting of hydrocarbyl substituted succinic esters, amides, ester-amides, imides, amine salts, acid-esters, acid-amides ester-amine salts, amide-amine-salts and acid-amine salts, and methods of heat treating metals comprising employing said quenching oils.
    Type: Grant
    Filed: December 16, 2002
    Date of Patent: April 15, 2008
    Assignee: The Lubrizol Corporation
    Inventors: William R. Sweet, Sanjay Kalhan
  • Publication number: 20070072778
    Abstract: Synthetic alkyl arenesulfonates in combination with the salt of a coupled reaction product of (A)(I) high-molecular weight polycarboxylic acylating agent, said acylating agent (A)(I) having at least one hydrocarbyl substituent having an average of from about 20 to about 500 carbon atoms, and at least one (B)(I) low-molecular weight polycarboxylic acylating agent, said acylating agent (B)(I) optionally having at least one hydrocarbyl substituent having an average of about 6 to about 19 carbon atoms, being coupled together by (C) at least one compound having (i) two or more primary amino groups, (ii) two or more secondary amino groups, (iii) at least one primary amino group and at least one secondary amino group, (iv) at least two hydroxyl groups or (v) at least one primary or secondary amino group and at least one hydroxyl group. These salt compositions are useful as emulsifiers in oil-in-water emulsions useful as functional fluids.
    Type: Application
    Filed: November 12, 2004
    Publication date: March 29, 2007
    Inventors: Sanjay Kalhan, Christian Ollinger, Derek Phillips
  • Publication number: 20050039832
    Abstract: Quenching oil compositions comprising (1) an oil having kinematic viscosity (ASTM Test Method D-445) at 40° C. ranging from about 4 to about 45 mm2sec?1 (about 40 to about 210 Saybolt Universal Seconds (SUS)) and having a saturated content from about 80% to about 100%; and (2) an alkali metal salt of saligenin derivative and optionally, further comprising at least one of (3) an aliphatic polyolefin having Mn ranging from about 300 to about 10,000; (4) at least one member selected from the group consisting of metal salts of hydrocarbyl substituted phenols, salicylic acids, carboxylic acids, and sulfonic acids; and (5) at least one member selected from the group consisting of hydrocarbyl substituted succinic esters, amides, ester-amides, imides, amine salts, acid-esters, acid-amides ester-amine salts, amide-amine-salts and acid-amine salts, and methods of heat treating metals comprising employing said quenching oils.
    Type: Application
    Filed: December 16, 2002
    Publication date: February 24, 2005
    Inventors: William Sweet, Sanjay Kalhan
  • Patent number: 6475408
    Abstract: Aqueous metal working fluids containing a water-soluble mist suppressing copolymer are disclosed. The copolymer includes styrene or hydrocarbyl-substituted styrene hydrophobic monomers and hydrophilic monomers. Optionally, the metal working fluid can be an oil-in-water emulsion.
    Type: Grant
    Filed: September 28, 2000
    Date of Patent: November 5, 2002
    Assignee: The Lubrizol Corporation
    Inventors: Richard A. Denis, Sanjay Kalhan, Robert E. Quinn
  • Patent number: 6100225
    Abstract: Aqueous metal working fluids containing a mist suppressing copolymer are disclosed. The copolymer includes hydrophobic and hydrophilic monomers. Optionally, the metal working fluid may be an oil-in-water emulsion.
    Type: Grant
    Filed: July 21, 1997
    Date of Patent: August 8, 2000
    Assignee: The Lubrizol Corporation
    Inventors: Sanjay Kalhan, James T. Mann, Richard A. Denis
  • Patent number: 6020291
    Abstract: Aqueous metal working fluids containing a mist suppressing branched copolymer are disclosed. The copolymer includes hydrophobic and hydrophilic monomers. Optionally, the metal working fluid may be an oil-in-water emulsion.
    Type: Grant
    Filed: November 21, 1997
    Date of Patent: February 1, 2000
    Assignee: The Lubrizol Corporation
    Inventors: Richard M. Lange, Sanjay Kalhan, Richard A. Denis
  • Patent number: 5783529
    Abstract: Metal working compositions which contain rhamsan gum as a mist suppressant exhibit good anti-mist performance and good retention of performance in the presence of prolonged times of shearing.
    Type: Grant
    Filed: October 24, 1997
    Date of Patent: July 21, 1998
    Assignee: The Lubrizol Corporation
    Inventors: Sanjay Kalhan, Edward A. Collins