Patents by Inventor Kalika Ranjan Samant

Kalika Ranjan Samant 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: 20210164131
    Abstract: Disclosed herein are spun yarns comprising melt spun staple fiber comprising a first polymer and a second polymer, wherein the first polymer comprises poly(trimethylene terephthalate) or poly(butylene terephthalate) and the second polymer comprises poly(ethylene terephthalate) or Co-PET, wherein Co-PET is a poly(ethylene terephthalate) copolymer comprising isophthalic acid monomer; and wherein the first polymer comprises poly(trimethylene terephthalate) and the weight ratio of the poly(trimethylene terephthalate) to the second polymer is in the range of from about 80:20 to about 10:90; or the the first polymer comprises poly(butylene terephthalate) and the weight ratio of the poly(butylene terephthalate) to the second polymer is in the range of about 90:10 to about 10:90. The spun yarn may further comprise a second staple fiber such as cotton or wool. The spun yarn is useful in preparing fabrics having advantageous properties.
    Type: Application
    Filed: June 26, 2019
    Publication date: June 3, 2021
    Inventors: Steven R. Ackerman, Akshay Kumar, Dennis Gerard Madeleine, Wayne E. Marsh, Kalika Ranjan Samant
  • Publication number: 20160069018
    Abstract: Poly(trimethylene terephthalate) compositions, and articles made therefrom, having improved flame retardancy are provided. The compositions can be used to make carpets that are suitable for installation where flame retardancy is desired.
    Type: Application
    Filed: November 17, 2015
    Publication date: March 10, 2016
    Inventors: BENJAMIN WEAVER MESSMORE, PAUL ELLIS ROLLIN, JR., JING-CHUNG CHANG, KALIKA RANJAN SAMANT
  • Publication number: 20130034658
    Abstract: In a first aspect the invention is a solid core fibrillation-resistant, synthetic polymeric filament having three substantially equal length convex sides. The sides through substantially rounded tips centered by a distance “a” from the axis of the filament. Each rounded tip has a radius substantially equal to a length “b”. Each tip lies on a circumscribed circle having a radius substantially equal to a length (a+b) and the midpoint of each side lies on an inscribed circle having a radius substantially equal to a length “c”. The filament has a denier-per-filament in the range 10<“dpf”<35; the distance “a” lies in the range 0.00025 inches (6 micrometers)<“a”<0.004 inches (102 micrometers); the distance “b” lies in the range from 0.00008 inches (2 micrometers)<“b”<0.001 inches (24 micrometers); the distance “c” lies in the range from 0.0003 inches (8 micrometers)<“c”<0.0025 inches (64 micrometers); and the modification ratio (“MR”) lies in the range from about 1.1<“MR”<about 2.0.
    Type: Application
    Filed: August 1, 2011
    Publication date: February 7, 2013
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: HARRY VAUGHN SAMUELSON, Kalika Ranjan Samant, Jing-Chung Chang
  • Publication number: 20130029152
    Abstract: In a first aspect the invention is a solid core fibrillation-resistant, synthetic polymeric filament having three substantially equal length convex sides. The sides through substantially rounded tips centered by a distance “a” from the axis of the filament. Each rounded tip has a radius substantially equal to a length “b”. Each tip lies on a circumscribed circle having a radius substantially equal to a length (a+b) and the midpoint of each side lies on an inscribed circle having a radius substantially equal to a length “c”. The filament has a denier-per-filament in the range 10<“dpf”<35; the distance “a” lies in the range 0.00025 inches (6 micrometers)<“a”<0.004 inches (102 micrometers); the distance “b” lies in the range from 0.00008 inches (2 micrometers)<“b”<0.001 inches (24 micrometers); the distance “c” lies in the range from 0.0003 inches (8 micrometers)<“c”<0.0025 inches (64 micrometers); and the modification ratio (“MR”) lies in the range from about 1.1<“MR”<about 2.0.
    Type: Application
    Filed: July 28, 2011
    Publication date: January 31, 2013
    Applicant: E.I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Harry Vayghn SAMUELSON, Kalika Ranjan SAMANT, Jing-Chung CHANG
  • Publication number: 20130029086
    Abstract: In a first aspect the invention is a solid core fibrillation-resistant, synthetic polymeric filament having three substantially equal length convex sides. The sides through substantially rounded tips centered by a distance “a” from the axis of the filament. Each rounded tip has a radius substantially equal to a length “b”. Each tip lies on a circumscribed circle having a radius substantially equal to a length (a+b) and the midpoint of each side lies on an inscribed circle having a radius substantially equal to a length “c”. The filament has a denier-per-filament in the range 10<“dpf”<35; the distance “a” lies in the range 0.00025 inches (6 micrometers)<“a”<0.004 inches (102 micrometers); the distance “b” lies in the range from 0.00008 inches (2 micrometers)<“b”<0.001 inches (24 micrometers); the distance “c” lies in the range from 0.0003 inches (8 micrometers)<“c”<0.0025 inches (64 micrometers); and the modification ratio (“MR”) lies in the range from about 1.1<“MR”<about 2.0.
    Type: Application
    Filed: July 29, 2011
    Publication date: January 31, 2013
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: HARRY VAUGHN SAMUELSON, Kalika Ranjan Samant, Jing-Chung Chang
  • Publication number: 20120128924
    Abstract: The present invention relates to recycled poly(trimethylene terephthalate), and products and processes using the recycled poly(trimethylene terephthalate).
    Type: Application
    Filed: May 18, 2011
    Publication date: May 24, 2012
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Geraldine M. Lenges, Dennis Gerard Madeleine, Kalika Ranjan Samant
  • Publication number: 20110311759
    Abstract: Poly(trimethylene terephthalate) compositions, and articles made therefrom, having improved flame retardancy are provided. The compositions can be used to make carpets that are suitable for installation where flame retardancy is desired.
    Type: Application
    Filed: May 16, 2011
    Publication date: December 22, 2011
    Applicant: E.I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Benjamin Weaver Messmore, Paul Ellis Rollin, JR., Kalika Ranjan Samant, Jing-Chung Chang
  • Patent number: 8008217
    Abstract: A penetration resistant article with an area density less than 1.5 lb/ft2 made of a plurality of fibrous fabric layers that have applied thereto about 1 to 8 percent by weight of a polymer having a glass transition temperature in the range of minus 40 to about 0° C. and a zero shear melt viscosity 2×106 to about 1013 poise at 20° C.
    Type: Grant
    Filed: June 21, 2005
    Date of Patent: August 30, 2011
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Kalika Ranjan Samant, Bryan Benedict Sauer, Minshon J. Chiou
  • Patent number: 7776401
    Abstract: A process of treating a woven fabric by applying to the fabric a viscous polymer in a 5 to 40 wt % solution with a solvent, wherein the polymer has a Tg in the range of about minus 40 to about 0° C. and a zero shear melt viscosity of about 2×106 to about 1013 poise when measured at 20° C. and then evaporating the solvent such that the polymer only partially penetrates the fabric and penetrates to in and between fiber bundles before the polymer solidifies.
    Type: Grant
    Filed: June 21, 2005
    Date of Patent: August 17, 2010
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Bryan Benedict Sauer, Kalika Ranjan Samant, Joseph D. Trentacosta, Minshon J. Chiou, James C. Davis
  • Publication number: 20100159184
    Abstract: In a first aspect the invention is a solid core fibrillation-resistant, synthetic polymeric filament having three substantially equal length convex sides. The sides through substantially rounded tips centered by a distance “a” from the axis of the filament. Each rounded tip has a radius substantially equal to a length “b”. Each tip lies on a circumscribed circle having a radius substantially equal to a length (a+b) and the midpoint of each side lies on an inscribed circle having a radius substantially equal to a length “c”. The filament has a denier-per-filament in the range 10<“dpf”<35; the distance “a” lies in the range 0.00025 inches (6 micrometers)<“a”<0.004 inches (102 micrometers); the distance “b” lies in the range from 0.00008 inches (2 micrometers)<“b”<0.001 inches (24 micrometers); the distance “c” lies in the range from 0.0003 inches (8 micrometers)<“c”<0.0025 inches (64 micrometers); and the modification ratio (“MR”) lies in the range from about 1.1<“MR”< about 2.0.
    Type: Application
    Filed: December 18, 2008
    Publication date: June 24, 2010
    Inventors: HARRY VAUGHN SAMUELSON, Kalika Ranjan Samant, Jing-Chung Chang
  • Publication number: 20100159186
    Abstract: In a first aspect the invention is a solid core fibrillation-resistant, synthetic polymeric filament having three substantially equal length convex sides. The sides through substantially rounded tips centered by a distance “a” from the axis of the filament. Each rounded tip has a radius substantially equal to a length “b”. Each tip lies on a circumscribed circle having a radius substantially equal to a length (a+b) and the midpoint of each side lies on an inscribed circle having a radius substantially equal to a length “c”. The filament has a denier-per-filament in the range 10<“dpf”<35; the distance “a” lies in the range 0.00025 inches (6 micrometers)<“a”<0.004 inches (102 micrometers); the distance “b” lies in the range from 0.00008 inches (2 micrometers)<“b”<0.001 inches (24 micrometers); the distance “c” lies in the range from 0.0003 inches (8 micrometers)<“c”<0.0025 inches (64 micrometers); and the modification ratio (“MR”) lies in the range from about 1.1<“MR”<about 2.0.
    Type: Application
    Filed: December 15, 2009
    Publication date: June 24, 2010
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: HARRY VAUGHN SAMUELSON, Kalika Ranjan Samant, Jing-Chung Chang
  • Patent number: 7556857
    Abstract: A fibrous structure made from a fiber and about 1 to about 15 wt % of a high viscosity polymer that has a glass transition temperature of about minus 40 to about 0° C. and useful for making bullet resistant articles.
    Type: Grant
    Filed: June 21, 2005
    Date of Patent: July 7, 2009
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Bryan Benedict Sauer, Kalika Ranjan Samant, Joseph D. Trentacosta
  • 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: 5804008
    Abstract: A method and apparatus for making a carpet formed from a plurality of tuftstrings bonded to a backing. Methods and apparatii for accurately positioning the tuftstring and ultrasonically bonding multiple tuftstrings to the backing is disclosed.
    Type: Grant
    Filed: August 27, 1997
    Date of Patent: September 8, 1998
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Jeffrey Lee Kennard, Carl Frederick Morin, Kalika Ranjan Samant