Patents by Inventor Laxmi Samantara

Laxmi Samantara 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: 20200024475
    Abstract: Provided is a coating composition comprising (a) a component A of the formula (R1)dSi(OR2)4?d, wherein R1 is a C1-C3 monovalent hydrocarbon, R2 is an R1 or a hydrogen radical and d is 0, 1 or 2; (b) a component B selected from the group consisting of (R3)aSi(OR4)4?a (Formula 1) and/or (R5O)m(R6)nSi(R9)x(R10)y Si(R11)zSi(R)o(OR7)p (Formula 2); (c) metal oxide particles; (d) UV absorber; (e) a catalyst; and (f) a solvent. The coating composition may provide a coating exhibiting good optical properties as well as durability, abrasion resistance, and/or crack resistance.
    Type: Application
    Filed: July 23, 2018
    Publication date: January 23, 2020
    Inventors: Laxmi Samantara, Jennifer Lynn David, Indumathi Ramakrishnan, Robert Hayes, Karthikeyan Murugesan
  • Publication number: 20170321060
    Abstract: A curable composition includes (i) an acrylic functional silicone material; (ii) an acrylic functional organic material; (iii) an acrylic functional urethane material; and optionally (iv) metal oxide particles. Upon curing, the compositions provide a coating that may exhibit good optical clarity, adhesion to various plastics, and good antifog performance.
    Type: Application
    Filed: May 6, 2016
    Publication date: November 9, 2017
    Inventors: Laxmi Samantara, Indumathi Ramakrishnan, Andreas Haeuseler
  • Patent number: 9801805
    Abstract: The invention is directed to a personal care composition which contains a crosslinked ionic silicone network wherein the crosslinked ionic silicone network is formed by the ring-opening polymerization of oxirane moiety.
    Type: Grant
    Filed: December 16, 2014
    Date of Patent: October 31, 2017
    Assignee: Momentive Performance Materials Inc.
    Inventors: Alok Sarkar, Anubhav Saxena, Laxmi Samantara, Ning Lu
  • Patent number: 9782776
    Abstract: An evacuated container assembly suitable for use in connection with blood collection including: (a) a container member formed of a first polymeric material and having a sidewall and one or more openings; (b) a nanocomposite barrier coating disposed on the container member having a thickness of up to about 30 microns and being derived from an aqueous dispersion including (i) a dispersed barrier matrix polymer; and (ii) a substantially exfoliated silicate filler having an aspect ratio of more than 50; and (c) one or more sealing members disposed in the opening(s) operative to hermetically seal the cavity; wherein the cavity is evacuated and maintains a pressure below atmospheric pressure and exhibits a draw volume loss lower than that of a like assembly without a nanocomposite barrier film by a factor of at least 1.5.
    Type: Grant
    Filed: March 19, 2009
    Date of Patent: October 10, 2017
    Assignee: INMAT, INC.
    Inventors: Paul R. Soskey, Jerome F. Parmer, Jr., Harris A. Goldberg, Douglas P. Karim, Laxmi Samantara, Carrie A. Feeney, Michele Farrell
  • Patent number: 9428617
    Abstract: An ?,?-functionalized polyoxyalkylene-siloxane polymer having the general structural Formula (I): provides improved hydrophilicity and hemocompatibility. The ?,?-functionalized polyoxyalkylene-siloxane polymer may be used to make various polycarbonate/?,?-functionalized polyoxyalkylene-siloxane copolymers and polymer blends, as well as articles including such copolymers and blends.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: August 30, 2016
    Assignee: Momentive Performance Material Inc.
    Inventors: Anuj Mittal, Laxmi Samantara, Samim Alam, Anubhav Saxena, Indumathi Ramakrishnan, Roy U. Rojas-Wahl
  • Patent number: 9376534
    Abstract: The invention is directed to phenyl-containing functional polysiloxanes and polycarbonate-polysiloxane copolymer compositions made therefrom having improved optical clarity and better low temperature impact resistance.
    Type: Grant
    Filed: May 30, 2014
    Date of Patent: June 28, 2016
    Assignee: Momentive Performance Materials Japan LLC
    Inventors: Koji Kanuma, Yataka Horie, Anuj Mittal, Laxmi Samantara, Indumathi Ramakrishnan, Naofumi Kumabe, Narayana Padmanabha Iyer, Samim Alam
  • Publication number: 20160166495
    Abstract: The invention is directed to a personal care composition which contains a crosslinked ionic silicone network wherein the crosslinked ionic silicone network is formed by the ring-opening polymerization of oxirane moiety.
    Type: Application
    Filed: December 16, 2014
    Publication date: June 16, 2016
    Inventors: Alok Sarkar, Anubhav Saxena, Laxmi Samantara, Ning Lu
  • Publication number: 20160083528
    Abstract: An ?,?-functionalized polyoxyalkylene-siloxane polymer having the general structural Formula (I): provides improved hydrophilicity and hemocompatibility. The ?,?-functionalized polyoxyalkylene-siloxane polymer may be used to make various polycarbonate/?,?-functionalized polyoxyalkylene-siloxane copolymers and polymer blends, as well as articles including such copolymers and blends.
    Type: Application
    Filed: September 18, 2015
    Publication date: March 24, 2016
    Inventors: Anuj Mittal, Laxmi Samantara, Samim Alam, Anubhav Saxena, Indumathi Ramakrishnan, Roy U. Rojas-Wahl
  • Publication number: 20150141586
    Abstract: The invention is directed to phenyl-containing functional polysiloxanes and polycarbonate-polysiloxane copolymer compositions made therefrom having improved optical clarity and better low temperature impact resistance.
    Type: Application
    Filed: May 30, 2014
    Publication date: May 21, 2015
    Applicant: MOMENTIVE PERFORMANCE MATERIALS JAPAN LLC
    Inventors: Koji Kanuma, Yataka Horie, Anuj Mittal, Laxmi Samantara, lndumathi Ramakrishnan, Naofumi Kumabe, Narayana Padmanabha Iyer, Samim Alam
  • Patent number: 8367193
    Abstract: The invention relates in one aspect to a post-formulation concentrated nanocomposite dispersion containing an invisible marker dye. The dispersion typically includes a silicate filler and a matrix polymer dispersed in an aqueous medium as well. The dispersions form optically transparent barrier films wherein the dye is effective to indicate film thickness on a substrate. Specific embodiments of this invention include a nanocomposite coating formulation designed to provide transparent high barrier coatings at thicknesses from 1 to 10 microns that include a near infrared (NIR) or infrared (IR) dye that enables rapid measurement of coating thickness and uniformity. The preferred dye imparts no observable color or appearance change, and thus can also function as an identifier for the coating.
    Type: Grant
    Filed: March 19, 2009
    Date of Patent: February 5, 2013
    Assignee: INMAT Inc
    Inventors: Douglas P. Karim, Laxmi Samantara, Carrie A. Feeney, Michele Farrell, Harris A. Goldberg
  • Publication number: 20090285722
    Abstract: An evacuated container assembly suitable for use in connection with blood collection including: (a) a container member formed of a first polymeric material and having a sidewall and one or more openings; (b) a nanocomposite barrier coating disposed on the container member having a thickness of up to about 30 microns and being derived from an aqueous dispersion including (i) a dispersed barrier matrix polymer; and (ii) a substantially exfoliated silicate filler having an aspect ratio of more than 50; and (c) one or more sealing members disposed in the opening(s) operative to hermetically seal the cavity; wherein the cavity is evacuated and maintains a pressure below atmospheric pressure and exhibits a draw volume loss lower than that of a like assembly without a nanocomposite barrier film by a factor of at least 1.5.
    Type: Application
    Filed: March 19, 2009
    Publication date: November 19, 2009
    Inventors: Paul R. Soskey, Jerome F. Parmer, JR., Harris A. Goldberg, Douglas P. Karim, Laxmi Samantara, Carrie A. Feeney, Michele Farrell