Patents by Inventor Brajendra K. Sharma

Brajendra K. Sharma 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: 9156859
    Abstract: Chemically-modified fatty acids prepared by reacting epoxidized fatty acids, their esters or triglyceride oils with borate compounds. The fatty acid derivatives produced are of the formula: wherein R is an H, branched or straight chain alkyl or alkenyl group, aromatic-containing group, glycerol, or glyceride, R? is a C3 to C29 aliphatic chain comprising one or more of the derivatized methylene groups of the formula: wherein m, n, and p are independently selected from 0 and 1; X is selected from O, NH, C(O)O, S, —C?N, —N?C?O, —N?C; and a borate of the formula: and R1 is selected from aryl, and straight, branched, cyclic or heterocyclic hydrocarbons or substituted hydrocarbons. These fatty acid derivatives have utility as antiwear/antifriction additives for industrial oils, fuels, and automotive applications.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: October 13, 2015
    Assignees: The United States of America, as represented by the Secretary of Agriculture, The Penn State Research Foundation
    Inventors: Glenn L. Heise, Brajendra K. Sharma, Sevim Z. Erhan
  • Patent number: 8841470
    Abstract: Chemically-modified fatty acids are prepared by reacting epoxidized fatty acids, their esters or triglyceride oils with amines of cyclic or aromatic hydrocarbons. The fatty acid derivatives produced are of the formula: wherein R is an H, branched or straight chain alkyl or alkenyl group, aromatic-containing group, glycerol, or glyceride, R? is a C3 to C29 aliphatic chain comprising one or more of the derivatized methylene groups of the formula: wherein R1 and R2 are independently selected from the group consisting of H, cyclic hydrocarbons, substituted cyclic hydrocarbons, and aryl groups, with the proviso that only one of said R1 and R2 may be H. These fatty acid derivatives have utility as antiwear/antifriction additives for industrial oils and automotive applications.
    Type: Grant
    Filed: August 24, 2011
    Date of Patent: September 23, 2014
    Assignees: The United States of America, as represented by the Secretary of Agriculture, The Penn State Research Foundation
    Inventors: Atanu Biswas, Kenneth M. Doll, Huai Nan Cheng, Brajendra K. Sharma
  • Patent number: 8822712
    Abstract: Chemically-modified triglycerides are prepared by reacting epoxidized triglyceride oils with phosphorus-based acid hydroxide or esters. The phosphorus-containing triglyceride derivatives are of the formula: wherein R1?, R2? and R3? are independently selected from C3 to C29 aliphatic fatty acid residues, at least one of which comprising one or both of the derivatized methylene groups of the formula: wherein m is 0, 1 or 2, n is 0 or 1, q is 1, 2 or 3, and R and R? are independently selected from the group consisting of H, straight, branched or cyclic hydrocarbons and substituted hydrocarbons, and aryl groups. The phosphorus-containing triglyceride derivatives so produced have utility as antiwear/antifriction additives for industrial oils and automotive applications.
    Type: Grant
    Filed: August 30, 2011
    Date of Patent: September 2, 2014
    Assignees: The United States of America, as represented by the Secretary of Agriculture, The Penn State Research Foundation
    Inventors: Kenneth M. Doll, Brajendra K. Sharma, Paulo A. Suarez
  • Patent number: 8173825
    Abstract: Fatty acid ester derivatives and a process for their production from unsaturated fatty acids are disclosed. The process comprises: a) reacting an unsaturated fatty acid or an ester thereof having one or more sites of unsaturation, with an epoxidation reagent to form a fatty acid epoxide wherein at least one of the sites of unsaturation of the fatty acid or fatty acid ester is converted to an oxirane ring; and b) reacting the fatty acid epoxide produced in a) with a carboxylic acid to form a hydroxy fatty acid ester derivative wherein the oxirane ring is opened and converted to a hydroxy ester comprising a hydroxyl group at one carbon of the opened oxirane ring and an ester of the carboxylic acid at the other carbon of the opened oxirane ring.
    Type: Grant
    Filed: March 13, 2007
    Date of Patent: May 8, 2012
    Assignees: The United States of America, as represented by the Secretary of Agriculture, The Penn State Research Foundation
    Inventors: Sevim Z. Erhan, Kenneth M. Doll, Brajendra K. Sharma
  • Publication number: 20120083433
    Abstract: Chemically-modified fatty acids prepared by reacting epoxidized fatty acids, their esters or triglyceride oils with borate compounds. The fatty acid derivatives produced are of the formula: wherein R is an H, branched or straight chain alkyl or alkenyl group, aromatic-containing group, glycerol, or glyceride, R? is a C3 to C29 aliphatic chain comprising one or more of the derivatized methylene groups of the formula: wherein m, n, and p are independently selected from 0 and 1; X is selected from O, NH, C(O)O, S, —C?N, —N?C?O, —N?C; and a borate of the formula: and R1 is selected from aryl, and straight, branched, cyclic or heterocyclic hydrocarbons or substituted hydrocarbons. These fatty acid derivatives have utility as antiwear/antifriction additives for industrial oils, fuels, and automotive applications.
    Type: Application
    Filed: September 23, 2011
    Publication date: April 5, 2012
    Inventors: Glenn L. Heise, Brajendra K. Sharma, Sevim Z. Erhan
  • Publication number: 20080154053
    Abstract: Fatty acid ester derivatives and a process for their production from unsaturated fatty acids are disclosed. The process comprises: a) reacting an unsaturated fatty acid or an ester thereof having one or more sites of unsaturation, with an epoxidation reagent to form a fatty acid epoxide wherein at least one of the sites of unsaturation of the fatty acid or fatty acid ester is converted to an oxirane ring; and b) reacting the fatty acid epoxide produced in a) with a carboxylic acid to form a hydroxy fatty acid ester derivative wherein the oxirane ring is opened and converted to a hydroxy ester comprising a hydroxyl group at one carbon of the opened oxirane ring and an ester of the carboxylic acid at the other carbon of the opened oxirane ring.
    Type: Application
    Filed: March 13, 2007
    Publication date: June 26, 2008
    Applicants: The Unites States of America, as represented by the Secretary of Agriculture, The Penn State Research Foundation
    Inventors: Sevim Z. Erhan, Kenneth M. Doll, Brajendra K. Sharma
  • Patent number: 7279448
    Abstract: A novel class of chemically-modified vegetable oils is prepared by reacting epoxidized triglyceride oils with thiols. The resultant poly(hydroxy thioether) derivatives have utility as antiwear/antifriction additives for environmentally-friendly industrial oils and automotive applications.
    Type: Grant
    Filed: July 8, 2004
    Date of Patent: October 9, 2007
    Assignees: The United States of America, as represented by the Secretary of Agriculture, The PENN State Research Foundation
    Inventors: Sevim Z. Erhan, Atanu Adhvaryu, Brajendra K. Sharma