Patents by Inventor Dhritisunder Bhattacharya

Dhritisunder Bhattacharya 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: 11603610
    Abstract: A conformable noise control article useful reducing noise in a motor vehicle is provided. The article includes a nonwoven fiber web that is impregnated with a polymeric matrix composition having low (Tg) and high (Tg) polymers, additives and inorganic fillers. The density of the noise control article is at least ten times more than the density of the nonwoven fiber web. The article has an air flow resistivity that is at least ninety times greater than the air flow resistivity of a bare nonwoven web and exhibits a sound transmission loss in the frequency spectrum of 125 Hz to 5000 Hz.
    Type: Grant
    Filed: July 10, 2018
    Date of Patent: March 14, 2023
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Alex Varghese, Deval Yogendra SurendraKumar Vashistha, Dhritisunder Bhattacharya, Satish Palled
  • Publication number: 20200173072
    Abstract: A conformable noise control article useful reducing noise in a motor vehicle is provided. The article includes a nonwoven fiber web that is impregnated with a polymeric matrix composition having low (Tg) and high (Tg) polymers, additives and inorganic fillers. The density of the noise control article is at least ten times more than the density of the nonwoven fiber web. The article has an air flow resistivity that is at least ninety times greater than the air flow resistivity of a bare nonwoven web and exhibits a sound transmission loss in the frequency spectrum of 125 Hz to 5000 Hz.
    Type: Application
    Filed: July 10, 2018
    Publication date: June 4, 2020
    Inventors: Alex Varghese, Deval Yogendra SurendraKumar Vashistha, Dhritisunder Bhattacharya, Satish Palled
  • Publication number: 20190022828
    Abstract: The present invention relates to abrasive articles, more specifically to coated abrasive article with non-woven backing and a method of their preparation.
    Type: Application
    Filed: December 21, 2016
    Publication date: January 24, 2019
    Inventors: Deval Y. Vashistha, Raju B.S. Thakur, Samir H. Soni, Dhritisunder Bhattacharya, Satish V. Palled
  • Patent number: 9988173
    Abstract: The present Invention discloses two robot assisted automated methods for application of decals on complex 3 dimensional surfaces without wrinkle and bubble. The method includes loading of objects having 3D surfaces on an object holding fixture manually from a conveyor belt, picking up a first application fixture automatically by a robot, peeling off the liner disposed on the decal manually and placing the decal on the first application fixture which holds the decal by suction, positioning the decal with exposed adhesive accurately on a first 3D surface of the object and switching off the suction automatically leaving the decal placed on the 3D surface of the object, placing the first application fixture back and picking up a second application fixture automatically by the robot for squeegee application, applying the second application fixture to complete the squeegee application by pressurizing the decal.
    Type: Grant
    Filed: September 25, 2014
    Date of Patent: June 5, 2018
    Assignee: 3M Innovative Properties Company
    Inventors: Aby Varghese, Murthy V. N. Arelekatti, Dhritisunder Bhattacharya
  • Publication number: 20160229577
    Abstract: The present Invention discloses two robot assisted automated methods for application of decals on complex 3 dimensional surfaces without wrinkle and bubble. The method includes loading of objects having 3D surfaces on an object holding fixture manually from a conveyor belt, picking up a first application fixture automatically by a robot, peeling off the liner disposed on the decal manually and placing the decal on the first application fixture which holds the decal by suction, positioning the decal with exposed adhesive accurately on a first 3D surface of the object and switching off the suction automatically leaving the decal placed on the 3D surface of the object, placing the first application fixture back and picking up a second application fixture automatically by the robot for squeegee application, applying the second application fixture to complete the squeegee application by pressurizing the decal.
    Type: Application
    Filed: September 25, 2014
    Publication date: August 11, 2016
    Inventors: Aby Varghese, Murthy V. N. Arelekatti, Dhritisunder Bhattacharya
  • Patent number: 8911542
    Abstract: The invention relates to an anti-corrosive composition comprising an active material of formula I wherein R is an aliphatic chain of C12 to C20 and n?20; an anti-corrosive pigment, a filler mixture, and a diluent or carrier. The invention also relates to a process for preparing the anticorrosive composition and a metal substrate having a coating comprising the anti-corrosive composition.
    Type: Grant
    Filed: December 15, 2011
    Date of Patent: December 16, 2014
    Assignee: 3M Innovative Properties Company
    Inventors: Samir H. Soni, Dhritisunder Bhattacharya
  • Publication number: 20130280543
    Abstract: The invention relates to an anti-corrosive composition comprising an active material of formula I wherein R is an aliphatic chain of C12 to C20 and n?20; an anti-corrosive pigment, a filler mixture, and a diluent or carrier. The invention also relates to a process for preparing the anticorrosive composition and a metal substrate having a coating comprising the anti-corrosive composition.
    Type: Application
    Filed: December 15, 2011
    Publication date: October 24, 2013
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Soni H. Samir, Dhritisunder Bhattacharya
  • Patent number: D835369
    Type: Grant
    Filed: October 27, 2015
    Date of Patent: December 4, 2018
    Assignee: 3M Innovative Properties Company
    Inventors: Raju B. Thakur, Naveen Machama, Dhritisunder Bhattacharya