Patents by Inventor Sevim Z. Erhan

Sevim Z. Erhan 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: 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
  • Patent number: 7691946
    Abstract: Biopolymeric hydrogel precursors are prepared by means of a ring-opening polymerization of epoxidized vegetable oils, followed by chemical hydrolysis. The recovered hydrogels having properties similar to Pluronic® type surfactants would have a plurality of end-use applications, including use as food additives and pharmaceutical ingredients. This invention provides the potential for an enhanced market for vegetable oils, and particularly for soybean oil.
    Type: Grant
    Filed: September 30, 2005
    Date of Patent: April 6, 2010
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventors: Zengshe Liu, 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
  • Patent number: 6613378
    Abstract: An edible adhesive is made by cross-linking a sugar with a polyfunctional acid. The adhesive has the property of binding two articles together for a limited period of time and then controllably releasing the adhesive bond between the articles when in contact with a liquid, such as a liquid beverage.
    Type: Grant
    Filed: October 18, 2000
    Date of Patent: September 2, 2003
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventors: Selim M. Erhan, Sevim Z. Erhan, Kenneth Eskins
  • Patent number: 6583302
    Abstract: Triglyceride oils having unsaturated fatty acid substituents are modified to convert sites of unsaturation to C-2 to C-10 diesters. The resulting derivatives are characterized by thermal and oxidative stability, have low temperature performance properties and are environmentally-friendly. They have utility as hydraulic fluids, lubricants, metal working fluids and other industrial fluids. The triglyceride oils are most easily prepared via epoxidized vegetable oils which are converted to the diesters in either a one- or two-step reaction.
    Type: Grant
    Filed: January 25, 2002
    Date of Patent: June 24, 2003
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventors: Sevim Z. Erhan, Atanu Adhvaryu, Zengshe Liu
  • Patent number: 6528571
    Abstract: Composite formulations useful in the production of objects by the solid freeform fabrication method comprise (A) an epoxidized drying oil (primary resin); (B) a curing agent; (C) a fibrous filler; (D) a thixotropic agent and optionally (E) a secondary resin. These composites are characterized by unique physical properties including enhanced biodegradability.
    Type: Grant
    Filed: November 22, 2000
    Date of Patent: March 4, 2003
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventors: Sevim Z. Erhan, Zengshe Liu, Paul D. Calvert
  • Patent number: 5713990
    Abstract: Sheet-fed and heat-set web offset ink vehicles, which do not require any volatile organic compounds, are prepared by blending: (I) as the major component, a petroleum resin, an alkyd resin or a heat bodied oil; (II) a non-bodied vegetable oil; and (III) one or more fatty acid esters. Inks prepared from these vehicles are quick drying and meet or exceed industry standards in regard to ruboff resistance, viscosity, and tackiness.
    Type: Grant
    Filed: March 27, 1996
    Date of Patent: February 3, 1998
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventors: Sevim Z. Erhan, Marvin O. Bagby
  • Patent number: 5122188
    Abstract: Printing inks, which do not require any petroleum-derived component, are prepared from vegetable oils by heat bodying the oils to within a specified viscosity range. The process is easily tailored to give products having viscosity, tackiness, ruboff resistance, and color density properties which meet or exceed industry standards. The inherent light coloration of the vehicles permits formulation into colored inks having substantially reduced pigment levels.
    Type: Grant
    Filed: May 3, 1990
    Date of Patent: June 16, 1992
    Assignee: The United States of America, as represented by the Secretary of Agriculture
    Inventors: Sevim Z. Erhan, Marvin O. Bagby
  • Patent number: RE42313
    Abstract: Triglyceride oils having unsaturated fatty acid substituents are modified to convert sites of unsaturation to C-2 to C-10 diesters. The resulting derivatives are characterized by thermal and oxidative stability, have low temperature performance properties and are environmentally-friendly. They have utility as hydraulic fluids, lubricants, metal working fluids and other industrial fluids. The triglyceride oils are most easily prepared via epoxidized vegetable oils which are converted to the diesters in either a one- or two-step reaction.
    Type: Grant
    Filed: June 7, 2005
    Date of Patent: April 26, 2011
    Assignees: The United States of America as repesented by the Secretary of Agriculture, The Penn State Research Foundation
    Inventors: Sevim Z. Erhan, Atanu Adhvaryu, Zengshe Liu