Patents by Inventor Vijayendra Kumar

Vijayendra Kumar 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: 8252884
    Abstract: Disclosed are compositions comprising antioxidants and stabilizers, such as, acid scavengers or organic phosphorus stabilizers, and optionally further comprising co-stabilizers. The disclosed compositions are useful as stabilizers for polyolefins and other polymeric materials. The disclosed compositions and methods generally provide longer shelf lifes and better oxidative resistance to materials than currently available antioxidants.
    Type: Grant
    Filed: August 24, 2011
    Date of Patent: August 28, 2012
    Assignee: Polnox Corporation
    Inventors: Vijayendra Kumar, Rajesh Kumar, Ashish Dhawan, Sui-Zhou Yang, Ashok L. Cholli
  • Publication number: 20120142968
    Abstract: Disclosed are compounds represented by structural formula (I): methods of producing compounds represented by structural formula (I). and their use in inhibiting oxidation in an oxidizable material.
    Type: Application
    Filed: November 17, 2011
    Publication date: June 7, 2012
    Applicant: Polnox Corporation
    Inventors: Rajesh Kumar, Suizhou Yang, Vijayendra Kumar, Ashok L. Cholli
  • Publication number: 20120071596
    Abstract: Disclosed are compositions comprising antioxidants and stabilizers, such as, acid scavengers or organic phosphorus stabilizers, and optionally further comprising co-stabilizers. The disclosed compositions are useful as stabilizers for polyolefins and other polymeric materials. The disclosed compositions and methods generally provide longer shelf lifes and better oxidative resistance to materials than currently available antioxidants.
    Type: Application
    Filed: August 24, 2011
    Publication date: March 22, 2012
    Inventors: Vijayendra Kumar, Rajesh Kumar, Ashish Dhawan, Sui-Zhou Yang, Ashok L. Cholli
  • Publication number: 20120004150
    Abstract: Compositions comprise first antioxidants and first additives, such as, a surface additives, performance enhancing additives and lubricant protective additives and optionally second additives and/or second antioxidants. The compositions are useful to improve lubricants, lubricant oils and other lubricant materials. The compositions and methods generally provide longer shelf lives, increased oxidative resistance, improved quality and/or enhanced performance to lubricants or lubricant oils.
    Type: Application
    Filed: June 21, 2011
    Publication date: January 5, 2012
    Inventors: Ashok L. Cholli, Ashish Dhawan, Rajesh Kumar, Vijayendra Kumar, Suizhou Yang, Taizoon Canteenwala
  • Patent number: 8080689
    Abstract: Disclosed are compounds represented by structural formula (I): methods of producing compounds represented by structural formula (I), and their use in inhibiting oxidation in an oxidizable material.
    Type: Grant
    Filed: August 11, 2010
    Date of Patent: December 20, 2011
    Assignee: Polnox Corporation
    Inventors: Rajesh Kumar, Suizhou Yang, Vijayendra Kumar, Ashok L. Cholli
  • Patent number: 8008423
    Abstract: Disclosed are compositions comprising antioxidants and stabilizers, such as, acid scavengers or organic phosphorus stabilizers, and optionally further comprising co-stabilizers. The disclosed compositions are useful as stabilizers for polyolefins and other polymeric materials. The disclosed compositions and methods generally provide longer shelf lifes and better oxidative resistance to materials than currently available antioxidants.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: August 30, 2011
    Assignee: Polnox Corporation
    Inventors: Vijayendra Kumar, Rajesh Kumar, Ashish Dhawan, Sui-Zhou Yang, Ashok L. Cholli
  • Publication number: 20110040125
    Abstract: Disclosed are compounds represented by structural formula (I): methods of producing compounds represented by structural formula (I), and their use in inhibiting oxidation in an oxidizable material.
    Type: Application
    Filed: August 11, 2010
    Publication date: February 17, 2011
    Applicant: Polnox Corporation
    Inventors: Rajesh Kumar, Suizhou Yang, Vijayendra Kumar, Ashok L. Cholli
  • Publication number: 20100305251
    Abstract: Disclosed are compositions comprising antioxidants and stabilizers, such as, acid scavengers or organic phosphorus stabilizers, and optionally further comprising co-stabilizers. The disclosed compositions are useful as stabilizers for polyolefins and other polymeric materials. The disclosed compositions and methods generally provide longer shelf lifes and better oxidative resistance to materials than currently available antioxidants.
    Type: Application
    Filed: May 28, 2010
    Publication date: December 2, 2010
    Inventors: Vijayendra Kumar, Rajesh Kumar, Ashish Dhawan, Sui-Zhou Yang, Ashok L. Cholli
  • Patent number: 7799948
    Abstract: Disclosed are compounds represented by structural formula (I): methods of producing compounds represented by structural formula (I), and their use in inhibiting oxidation in an oxidizable material.
    Type: Grant
    Filed: February 22, 2006
    Date of Patent: September 21, 2010
    Assignee: Polnox Corporation
    Inventors: Rajesh Kumar, Suizhou Yang, Vijayendra Kumar, Ashok L. Cholli
  • Patent number: 7767853
    Abstract: The present invention is directed to a compound represented by Structural Formula I: wherein the variables are described herein. Also included are methods of making the compounds of Structural Formula (I) and methods of using the compounds as antioxidants.
    Type: Grant
    Filed: October 17, 2007
    Date of Patent: August 3, 2010
    Assignee: Polnox Corporation
    Inventors: Ashok L. Cholli, Rajesh Kumar, Taizoon Canteenwala, Vijayendra Kumar
  • Patent number: 7754267
    Abstract: Antioxidant polymers of the present invention comprise repeat units that include one or both of Structural Formulas (I) and (II): wherein: R is —H or a substituted or unsubstituted alkyl, acyl or aryl group; Ring A is substituted with at least one tert-butyl group or substituted or unsubstituted n-alkoxycarbonyl group; Ring B is substituted with at least one —H and at least one tert-butyl group or substituted or unsubstituted n-alkoxycarbonyl group; Rings A and B are each optionally substituted with one or more groups selected from the group consisting of —OH, —NH, —SH, a substituted or unsubstituted alkyl or aryl group, and a substituted or unsubstituted alkoxycarbonyl group; n is an integer equal to or greater than 2; and p is an integer equal to or greater than 0. The invention also includes methods of using and preparing these polymers.
    Type: Grant
    Filed: February 27, 2007
    Date of Patent: July 13, 2010
    Assignees: The United States of America as represented by the Secretary of the Army, University of Massachusetts Lowell
    Inventors: Ashok L. Cholli, Vijayendra Kumar, Javant Kumar, Virinder Singh Parmar, Lynne Ann Samuelson, Ferdinando F. Bruno
  • Patent number: 7727571
    Abstract: Antioxidant polymers of the present invention comprise repeat units that include one or both of Structural Formulas (I) and (II): wherein: R is —H or a substituted or unsubstituted alkyl, acyl or aryl group; Ring A is substituted with at least one tert-butyl group or substituted or unsubstituted n-alkoxycarbonyl group; Ring B is substituted with at least one —H and at least one tert-butyl group or substituted or unsubstituted n-alkoxycarbonyl group; Rings A and B are each optionally substituted with one or more groups selected from the group consisting of —OH, —NH, —SH, a substituted or unsubstituted alkyl or aryl group, and a substituted or unsubstituted alkoxycarbonyl group; n is an integer equal to or greater than 2; and p is an integer equal to or greater than 0. The invention also includes methods of using and preparing these polymers.
    Type: Grant
    Filed: February 27, 2007
    Date of Patent: June 1, 2010
    Assignees: University of Massachusetts Lowell, The United States of America as represented by the Secretary of the Army
    Inventors: Ashok L. Cholli, Vijayendra Kumar, Javant Kumar, Virinder Singh Parmar, Lynne Ann Samuelson, Ferdinando F. Bruno
  • Patent number: 7705075
    Abstract: Disclosed are compositions comprising antioxidants and stabilizers, such as, acid scavengers or organic phosphorus stabilizers, and optionally further comprising co-stabilizers. The disclosed compositions are useful as stabilizers for polyolefins and other polymeric materials. The disclosed compositions and methods generally provide longer shelf lives and better oxidative resistance to materials than currently available antioxidants.
    Type: Grant
    Filed: April 15, 2008
    Date of Patent: April 27, 2010
    Assignee: Polnox Corporation
    Inventors: Vijayendra Kumar, Rajesh Kumar, Ashish Dhawan, Suizhou Yang, Ashok L. Cholli
  • Publication number: 20100084607
    Abstract: Disclosed are macromolecular antioxidants represented by a structural formula selected from I-VI: and polymeric macromolecular antioxidants comprises at least one repeating unit represented by a structural formula selected from VIIa, VIIb, VIIIa, VIIIb or a combination thereof: possessing superior oxidative resistance and higher thermal stability than commercially available antioxidants, and synthesis and applications of these macromolecular antioxidants and polymeric macromolecular antioxidants.
    Type: Application
    Filed: August 12, 2009
    Publication date: April 8, 2010
    Applicant: Polnox Corporation
    Inventors: Ashok L. Cholli, Rajesh Kumar, Ashish Dhawan, Suizhou Yang, Vijayendra Kumar
  • Patent number: 7601378
    Abstract: The following is an examiner's statement of reasons for allowance: an antioxidant polymer and method of preparing, the antioxidant comprising repeat units that include one or both of Structural Formulas (I) and (II) wherein R is —H or a substituted or unsubstituted alkyl, acyl or aryl group; Ring A is substituted with at least one tert-butyl group or substituted or unsubstituted n-alkoxycarbonyl group; Ring B is substituted with at least one —H and at least one tert-butyl group or substituted or unsubstituted n-alkoxycarbonyl group is not taught nor fairly suggested by the prior art or any combination thereof.
    Type: Grant
    Filed: September 26, 2005
    Date of Patent: October 13, 2009
    Assignees: University of Massachusetts Lowell, The United States of America as represented by the Secretary of the Army
    Inventors: Ashok L. Cholli, Vijayendra Kumar, Jayant Kumar, Virinder Singh Parmar, Lynne Ann Samuelson, Ferdinando F. Bruno
  • Patent number: 7595074
    Abstract: A method of preparing a phenolic polymer comprising: a) protecting at least one hydroxyl group of a substituted or unsubstituted phenol represented by Structural Formula (XXIX), wherein: R11, R12, R13, R14 and R15 are independently —H, —OH, —NH, —SH, a substituted or unsubstituted alkyl or aryl group, a substituted or unsubstituted alkoxycarbonyl or aryloxycarbonyl group, a substituted or unsubstituted alkoxy group or a saturated or unsaturated carboxylic acid group; or R11, R12, R13, R14 or R15, in conjunction with an adjacent R11, R12, R13, R14 or R15, forms a substituted or unsubstituted alkylene dioxy group; provided that at least one of R11, R12, R13, R14 or R15 is a tert-butyl group 1-ethenyl-2-carboxylic acid or ester thereof, a substituted or unsubstituted alkylene dioxy group or a substituted or unsubstituted n-alkoxycarbonyl group, at least one of R11, R12, R13, R14 or R15 is a hydroxyl group, and at least one of R11, R12, R13, R14 and R15 is —H; with a protecting group, wherein thereby obtaining on
    Type: Grant
    Filed: January 21, 2004
    Date of Patent: September 29, 2009
    Assignees: University of Massachusetts Lowell, The United States of America as represented by the Secretary of the Army
    Inventors: Ashok L. Cholli, Vijayendra Kumar, Ashish Dhawan, Jayant Kumar, Virinder Singh Parmar, Lynne Ann Samuelson, Ferdinando F. Bruno
  • Patent number: 7507454
    Abstract: Antioxidant polymers of the present invention comprise repeat units that include one or both of Structural Formulas (I) and (II): wherein: R is —H or a substituted or unsubstituted alkyl, acyl or aryl group; Ring A is substituted with at least one tert-butyl group or substituted or unsubstituted n-alkoxycarbonyl group; Ring B is substituted with at least one —H and at least one tert-butyl group or substituted or unsubstituted n-alkoxycarbonyl group; Rings A and B are each optionally substituted with one or more groups selected from the group consisting of —OH, —NH, —SH, a substituted or unsubstituted alkyl or aryl group, and a substituted or unsubstituted alkoxycarbonyl group; n is an integer equal to or greater than 2; and p is an integer equal to or greater than 0. The invention also includes methods of using and preparing these polymers.
    Type: Grant
    Filed: February 27, 2007
    Date of Patent: March 24, 2009
    Assignees: University of Massachusetts Lowell, United States of America as represented by the Secretary of the Army
    Inventors: Ashok L. Cholli, Vijayendra Kumar, Jayant Kumar, Virinder Singh Parmar, Lynne Ann Samuelson, Ferdinando F. Bruno
  • Publication number: 20080293856
    Abstract: Disclosed are compositions comprising antioxidants and stabilizers, such as, acid scavengers or organic phosphorus stabilizers, and optionally further comprising co-stabilizers. The disclosed compositions are useful as stabilizers for polyolefins and other polymeric materials. The disclosed compositions and methods generally provide longer shelf lives and better oxidative resistance to materials than currently available antioxidants.
    Type: Application
    Filed: April 15, 2008
    Publication date: November 27, 2008
    Inventors: Vijayendra Kumar, Rajesh Kumar, Ashish Dhawan, Suizhou Yang, Ashok L. Cholli
  • Publication number: 20080249335
    Abstract: The present invention is directed to a compound represented by Structural Formula I: wherein the variables are described herein. Also included are methods of making the compounds of Structural Formula (I) and methods of using the compounds as antioxidants.
    Type: Application
    Filed: October 17, 2007
    Publication date: October 9, 2008
    Inventors: Ashok L. Cholli, Rajesh Kumar, Taizoon Canteenwala, Vijayendra Kumar
  • Patent number: 7323511
    Abstract: A method of preparing an antioxidant polymer includes forming or obtaining a first polymer having reactive pendant groups, where the first polymer does not include cyclic anhydride repeat units, and derivatizing the first polymer with an antioxidant. Another method of preparing an antioxidant polymer includes forming or obtaining a first polymer having reactive pendant groups and derivatizing the first polymer with an antioxidant, where the antioxidant is attached to the first polymer by an acetal, amide, amine, carbamate, carbonate, ester, ether or thioether linkage or by a carbon-carbon bond. The invention is also directed to polymers that are generally prepared by these methods, compositions that include such polymers and methods of using such polymers.
    Type: Grant
    Filed: January 21, 2005
    Date of Patent: January 29, 2008
    Assignee: University of Massachusetts Lowell
    Inventors: Ashok L. Cholli, Ashish Dhawan, Vijayendra Kumar