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).

  • Publication number: 20070161522
    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: November 30, 2006
    Publication date: July 12, 2007
    Inventors: Ashok Cholli, Ashish Dhawan, Rajesh Kumar, Vijayendra Kumar, Suizhou Yang, Taizoon Canteenwala
  • Publication number: 20070154720
    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: Application
    Filed: February 27, 2007
    Publication date: July 5, 2007
    Inventors: Ashok Cholli, Vijayendra Kumar, Jayant Kumar, Virinder Parmar, Lynne Samuelson, Ferdinando Bruno
  • Publication number: 20070154608
    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: Application
    Filed: February 27, 2007
    Publication date: July 5, 2007
    Inventors: Ashok Cholli, Vijayendra Kumar, Javant Kumar, Virinder Parmar, Lynne Samuelson, Ferdinando Bruno
  • Publication number: 20070154430
    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: Application
    Filed: February 27, 2007
    Publication date: July 5, 2007
    Inventors: Ashok Cholli, Vijayendra Kumar, Javant Kumar, Virinder Parmar, Lynne Samuelson, Ferdinando Bruno
  • Publication number: 20070149660
    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: October 27, 2006
    Publication date: June 28, 2007
    Inventors: Vijayendra Kumar, Rajesh Kumar, Ashish Dhawan, Suizhou Yang, Ashok Cholli
  • Patent number: 7223432
    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: April 4, 2003
    Date of Patent: May 29, 2007
    Assignees: University of Massachusettes 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: 20070106059
    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: October 27, 2006
    Publication date: May 10, 2007
    Inventors: Ashok Cholli, Rajesh Kumar, Ashish Dhawan, Suizhou Yang, Vijayendra Kumar
  • Publication number: 20060189824
    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: February 22, 2006
    Publication date: August 24, 2006
    Inventors: Rajesh Kumar, Suizhou Yang, Vijayendra Kumar, Ashok Cholli
  • Publication number: 20060128939
    Abstract: Disclosed is a method for the synthesis of sterically hindered polymeric antioxidants based on phenol type antioxidant monomers. The method includes mono-deacetylating, polymerizing and deacetylating an aryl monomer represented by the following structural formula: to produce a sterically hindered polymeric macromolecular antioxidant. X, R10 and q are as defined herein. The disclosed method is a simple, direct and economical process for the synthesis of sterically hindered polymeric macromolecular antioxidants.
    Type: Application
    Filed: December 2, 2005
    Publication date: June 15, 2006
    Inventors: Vijayendra Kumar, Suizhou Yang, Ashok Cholli
  • Publication number: 20060029706
    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: Application
    Filed: September 26, 2005
    Publication date: February 9, 2006
    Inventors: Ashok Cholli, Vijayendra Kumar, Javant Kumar, Virinder Parmar, Lynne Samuelson, Ferdinando Bruno
  • Publication number: 20050238789
    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: Application
    Filed: January 21, 2005
    Publication date: October 27, 2005
    Applicant: University of Massachusetts Lowell
    Inventors: Ashok Cholli, Ashish Dhawan, Vijayendra Kumar
  • Publication number: 20040214935
    Abstract: One group of polymers comprise repeat units of Structural Formula (I) and/or (II): 1
    Type: Application
    Filed: January 21, 2004
    Publication date: October 28, 2004
    Applicants: University of Massachusetts Lowell, Government of the United States, 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
  • Publication number: 20030230743
    Abstract: Antioxidant polymers of the present invention comprise repeat units that include one or both of Structural Formulas (I) and (II): 1
    Type: Application
    Filed: April 4, 2003
    Publication date: December 18, 2003
    Applicant: University of Massachusetts Lowell
    Inventors: Ashok L. Cholli, Vijayendra Kumar, Jayant Kumar, Virinder Singh Parmar, Lynne Ann Samuelson, Ferdinando F. Bruno
  • Patent number: 6032410
    Abstract: A sod comprising a root support matrix that itself comprises a mixture of soil and/or sand, and shredded carpet fragments, wherein the shredded carpet fragments are from about one-tenth percent (0.1%) to about five percent (5.0%) by weight of the matrix; and a plurality of plants growing in said root support matrix, said plants having roots entangled with said shredded carpet fragments. The shredded carpet fragments comprise a mass of entangled face yarns some of which yarns have bits of carpet backing material attached thereto, wherein at least about ninety percent (90%), and more preferably at least about ninety-five percent (95%), of the bits of carpet backing material have no one dimension greater than about one-quarter (0.25) inch.
    Type: Grant
    Filed: January 28, 1997
    Date of Patent: March 7, 2000
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Vijayendra Kumar
  • Patent number: 6022827
    Abstract: A sod comprising a root support matrix that itself comprises a mixture of soil and/or sand and shredded carpet pieces has a beneficial plant adjuvant disposed on the shredded fabric pieces, preferably in the form of shredded carpet pieces. The beneficial plant adjuvant is initially suspended in an aqueous solution of water and a degradable, slow-release, water-soluble liquid polymer that when dried forms a coating on the surface of the shredded carpet pieces.
    Type: Grant
    Filed: January 28, 1997
    Date of Patent: February 8, 2000
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Vijayendra Kumar, Darryl Alan Meade
  • Patent number: 5906877
    Abstract: This invention provides moisture stable tuftstring carpet assemblies. The pile surface structure comprises a moisture stable backing substrate, a plurality of elongated pile articles each comprising an elongated, moisture stable support strand having bonded thereto a plurality of "U" shaped bundles of multifilament yarn. The pile articles are bonded to the backing substrate. Different backing substrates and support strands may be used.
    Type: Grant
    Filed: March 5, 1996
    Date of Patent: May 25, 1999
    Assignee: E. I. du Pont de Nemours & Co.
    Inventors: Peter Popper, Rashi Akki, Lap-Tak Andrew Cheng, Carmen Anoish Covelli, Sassan Hojabr, George Kevork Kodokian, Vijayendra Kumar, James K. Odle, Kalika Ranjan Samant, Caroline Tjhen Shibata, Wae-Hai Tung, Gregory Paul Weeks, Paul Wesley Yngve
  • Patent number: 5470648
    Abstract: This invention relates to composite fabrics having two layers of nonwoven fabric comprising entangled non-bonded nylon filaments and a reinforcing layer of fiberglass scrim adhesively attached to each of the nonwoven layers. The composite fabrics are useful as backings in a carpet assembly.
    Type: Grant
    Filed: June 10, 1994
    Date of Patent: November 28, 1995
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Paul S. Pearlman, Vijayendra Kumar
  • Sod
    Patent number: 5404671
    Abstract: A novel multi-layer sod and the method for making said sod is disclosed. The sod contains recycled waste products including pieces of carpet and compost.
    Type: Grant
    Filed: October 27, 1993
    Date of Patent: April 11, 1995
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: William H. Farrow, Jr., Vijayendra Kumar, William H. Mitchell
  • Patent number: 4906520
    Abstract: A fabric, useful as a primary carpet backing, woven in both the warp and weft directions from filmy elements in the form of longitudinally-oriented, splittable ribbons formed from a blend of a major amount of polyester and a minor amount of a polyolefin. The ribbons split longitudinally when punctured by a tufting needle, thus providing for a more secure grip on the tufted carpet yarn than that given by conventional polyester backings. The use of polyester as a principal component overcomes certain drawbacks of polypropylene backings. Alternative processes for making these fabrics, each involving a heat-treating step at a temperature of at least 150.degree. F. (66.degree. C.) for a sufficient period of time to render the ribbons splittable, are also disclosed.
    Type: Grant
    Filed: May 2, 1988
    Date of Patent: March 6, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Vijayendra Kumar
  • Patent number: H90
    Abstract: A stitch-bonded fabric having two split-film layers as a weft component and one split-film layer as a warp component held together by a stitching yarn is improved significantly in its performance as a primary backing for a tufted pile carpet by having a nonwoven sheet of continuous organic filaments attached to the warp component. In tufting, the nonwoven sheet becomes the back side of the backing.
    Type: Grant
    Filed: August 23, 1985
    Date of Patent: July 1, 1986
    Inventor: Vijayendra Kumar