Patents by Inventor Chandrashekar Raman

Chandrashekar Raman 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: 20200261969
    Abstract: The present invention relates to a release agent and methods of using a release agent. In particular, the present invention relates to a release agent comprising boron nitride and a fumed metal oxide, which may find use, for example, in metal processing applications.
    Type: Application
    Filed: December 29, 2016
    Publication date: August 20, 2020
    Inventors: Barish Dantal, Chandrashekar Raman
  • Patent number: 9782542
    Abstract: In one aspect, a self-lubricating component is provided for a pharmaceutical packaging assembly. The self-lubricating component comprises a polymer composition and an effective amount of a lubricating additive such as, for example, boron nitride. In another aspect, a pharmaceutical packaging assembly may be provided having a surface thereof coated with a lubricating composition comprising boron nitride. The pharmaceutical packaging composition may be, for example, a pre-filled syringe comprising a body (barrel) and a plunger assembly.
    Type: Grant
    Filed: August 16, 2013
    Date of Patent: October 10, 2017
    Assignee: Momentive Performance Materials Inc.
    Inventors: Samuel Conzone, David M. Rusinko, Chandrashekar Raman, Indumathi Ramakrishnan, Anantharaman Dhanabalan, Mayank Kumar Dubey, Markus Bley, Hans Rafael Winkelbach
  • Publication number: 20160325994
    Abstract: A multi-functional composition including high aspect boron nitride particles providing improved properties such as thermal conductivity, electrical insulation, barrier to moisture, vapor, and gasses, lubrication, friction modification, optical properties, suspension stability, and a system and method for forming such compositions. The high boron nitride particles have an average aspect ratio greater than 300. The multifunctional composition may comprise of a polymer material, fluids, metals, ceramics, glasses, other non-BN fillers and the high aspect ratio boron nitride. Also provided are methods for making such boron nitride particles and compositions.
    Type: Application
    Filed: January 5, 2015
    Publication date: November 10, 2016
    Inventors: Hao QU, Anand MURUGAIAH, Bei XIANG, Chandrashekar RAMAN, Kang YI-LIN
  • Patent number: 9434870
    Abstract: A thermally conductive filler composition and a resin composition comprising such filler compositions. The filler composition comprises a blend of a boron nitride, a graphite, or a combination thereof, a talc, and optionally a silane. The filler composition can further comprise other filler components including, for example, wollastonite, calcium carbonate, or a combination thereof. The filler compositions can be added to a resin composition to provide a thermally conductive resin such as, for example, a thermally conductive plastic.
    Type: Grant
    Filed: December 24, 2014
    Date of Patent: September 6, 2016
    Assignee: Momentive Performance Materials Inc.
    Inventors: Chandrashekar Raman, Bei Xiang, Anand Murugaiah
  • Publication number: 20150275063
    Abstract: A thermally conductive filler composition and a resin composition comprising such filler compositions. The filler composition comprises a blend of a boron nitride, a graphite, or a combination thereof, a talc, and optionally a silane. The filler composition can further comprise other filler components including, for example, wollastonite, calcium carbonate, or a combination thereof. The filler compositions can be added to a resin composition to provide a thermally conductive resin such as, for example, a thermally conductive plastic.
    Type: Application
    Filed: June 10, 2015
    Publication date: October 1, 2015
    Inventors: Chandrashekar Raman, Anand Murugaiah, Bei Xiang, Kang-Yi Lin
  • Publication number: 20150184055
    Abstract: A thermally conductive filler composition and a resin composition comprising such filler compositions. The filler composition comprises a blend of a boron nitride, a graphite, or a combination thereof, a talc, and optionally a silane. The filler composition can further comprise other filler components including, for example, wollastonite, calcium carbonate, or a combination thereof. The filler compositions can be added to a resin composition to provide a thermally conductive resin such as, for example, a thermally conductive plastic.
    Type: Application
    Filed: December 24, 2014
    Publication date: July 2, 2015
    Inventors: Chandrashekar Raman, Bei Xiang, Anand Murugaiah
  • Publication number: 20150034858
    Abstract: A thermally conductive polymer composition comprising (1) a polymer material, and (2) a thermally conductive filler. The thermally conductive filler can be boron nitride. The thermally conductive polymer composition can be used in a molding operation to form a molded article and can reduce the molding cycle time of a molding process. In one embodiment, increasing the thermal conductivity of a polymer material (as compared to the thermal conductivity of the material in the absence of a thermally conductive filler) increases the thermal diffusivity and reduces the cooling time of the article. The present invention also provides methods of forming molded articles from such compositions.
    Type: Application
    Filed: October 17, 2014
    Publication date: February 5, 2015
    Inventors: Chandrashekar Raman, Wayne A. Earley
  • Patent number: 8946333
    Abstract: A thermally conductive filler composition and a resin composition comprising such filler compositions. The filler composition comprises a blend of a boron nitride, a metal oxide, and a silane. The filler composition can further comprise other filler components including, for example, glass fiber or glass flake. The filler compositions can be added to a resin composition to provide a thermally conductive resin such as, for example, a thermally conductive plastic.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: February 3, 2015
    Assignee: Momentive Performance Materials Inc.
    Inventors: Chandrashekar Raman, Bei Xiang, Anand Murugaiah
  • Patent number: 8933157
    Abstract: A boron nitride composition comprising at least two different boron nitride powder materials having different properties, e.g., surface areas, particle size, tap density, etc.
    Type: Grant
    Filed: October 5, 2007
    Date of Patent: January 13, 2015
    Assignee: Momentive Performance Materials Inc.
    Inventors: Paulo Meneghetti, Chandrashekar Raman
  • Patent number: 8680190
    Abstract: A boron nitride composition comprising at least two different boron nitride powder materials having different properties, e.g., surface areas, particle size, tap density, etc.
    Type: Grant
    Filed: October 5, 2007
    Date of Patent: March 25, 2014
    Assignee: Momentive Performance Materials Inc.
    Inventors: Paulo Meneghetti, Chandrashekar Raman
  • Publication number: 20140080951
    Abstract: A thermally conductive plastic composition and a system and method for forming such compositions. The thermally conductive composition comprises a polymer material and a thermally conductive filler, such as boron nitride, and exhibits good in-plane thermal conductivity, through-plane conductivity, or both. The system for forming thermally conductive plastic compositions comprises an extruder and an extruder screw comprising fractional mixing elements. The extruder can also comprise a screw with shovel elements located in a region of the system for introducing a thermally conductive filler into the extruder. The system and method allow for the processing of thermally conductive plastic compositions comprising boron nitride and can allow for the processing of boron nitride agglomerates such that the agglomerates remain sufficiently in tact to provide a composition exhibiting both excellent in-plane and through-plane conductivity.
    Type: Application
    Filed: March 14, 2013
    Publication date: March 20, 2014
    Inventors: Chandrashekar Raman, Bei Xiang, Anand Murugaiah, Don Robert Roden, JR.
  • Publication number: 20140080954
    Abstract: A thermally conductive composition and a system and method for forming such compositions. The thermally conductive composition comprises a polymer material and a thermally conductive filler, such as boron nitride. In one embodiment, a method of forming a composition having high through-plane conductivity comprises mixing an isotropic boron nitride material, such as boron nitride agglomerates, and a polymer resin material under conditions such that the peak stress during mixing does not exceed 80 kPa.
    Type: Application
    Filed: March 14, 2013
    Publication date: March 20, 2014
    Inventors: Chandrashekar Raman, Sadhan Jana, Romny Garcia-Buduen, Kushal Mahinderpal Bahl
  • Publication number: 20140080952
    Abstract: A thermally conductive filler composition and a resin composition comprising such filler compositions. The filler composition comprises a blend of a boron nitride, a metal oxide, and a silane. The filler composition can further comprise other filler components including, for example, glass fiber or glass flake. The filler compositions can be added to a resin composition to provide a thermally conductive resin such as, for example, a thermally conductive plastic.
    Type: Application
    Filed: March 14, 2013
    Publication date: March 20, 2014
    Inventors: Chandrashekar Raman, Bei Xiang, Anand Murugaiah
  • Publication number: 20140077125
    Abstract: A composition comprising exfoliated boron nitride crystals dispersed in a resin matrix and a method of forming such compositions comprises the in situ exfoliation of boron nitride crystals by compounding boron nitride crystals in a resin material with a hard filler material having a hardness greater than the hardness of the boron nitride crystals.
    Type: Application
    Filed: March 14, 2013
    Publication date: March 20, 2014
    Inventors: Kang Yi Lin, Chandrashekar Raman, Bei Xiang, Anand Murugaiah
  • Patent number: 8618185
    Abstract: In one aspect, a self-lubricating component is provided for a pharmaceutical packaging assembly. The self-lubricating component comprises a polymer composition and an effective amount of a lubricating additive such as, for example, boron nitride. In another aspect, a pharmaceutical packaging assembly may be provided having a surface thereof coated with a lubricating composition comprising boron nitride. The pharmaceutical packaging composition may be, for example, a pre-filled syringe comprising a body (barrel) and a plunger assembly.
    Type: Grant
    Filed: October 1, 2010
    Date of Patent: December 31, 2013
    Assignee: Momentive Performance Materials Inc.
    Inventors: Samuel D. Conzone, David M. Rusinko, Chandrashekar Raman
  • Publication number: 20130338606
    Abstract: In one aspect, a self-lubricating component is provided for a pharmaceutical packaging assembly. The self-lubricating component comprises a polymer composition and an effective amount of a lubricating additive such as, for example, boron nitride. In another aspect, a pharmaceutical packaging assembly may be provided having a surface thereof coated with a lubricating composition comprising boron nitride. The pharmaceutical packaging composition may be, for example, a pre-filled syringe comprising a body (barrel) and a plunger assembly.
    Type: Application
    Filed: August 16, 2013
    Publication date: December 19, 2013
    Applicant: MOMENTIVE PERFORMANCE MATERIALS INC.
    Inventors: Samuel Conzone, David M. Rusinko, Chandrashekar Raman, Indumathi Ramakrishnan, Anantharaman Dhanabalan, Mayank Kumar Dubey, Markus Bley, Hans Rafael Winkelbach
  • Patent number: 8530536
    Abstract: In one aspect, a self-lubricating component is provided for a pharmaceutical packaging assembly. The self-lubricating component comprises a polymer composition and an effective amount of a lubricating additive such as, for example, boron nitride. In another aspect, a pharmaceutical packaging assembly may be provided having a surface thereof coated with a lubricating composition comprising boron nitride. The pharmaceutical packaging composition may be, for example, a pre-filled syringe comprising a body (barrel) and a plunger assembly.
    Type: Grant
    Filed: September 8, 2011
    Date of Patent: September 10, 2013
    Inventors: Samuel D. Conzone, David M. Rusinko, Chandrashekar Raman, Indumathi Ramakrishnan, Anantharaman Dhanabalan, Mayank Kumar Dubey, Sumi Dinkar, Mayanglambam Rebika Devi, Markus Bley
  • Publication number: 20120065595
    Abstract: In one aspect, a self-lubricating component is provided for a pharmaceutical packaging assembly. The self-lubricating component comprises a polymer composition and an effective amount of a lubricating additive such as, for example, boron nitride. In another aspect, a pharmaceutical packaging assembly may be provided having a surface thereof coated with a lubricating composition comprising boron nitride. The pharmaceutical packaging composition may be, for example, a pre-filled syringe comprising a body (barrel) and a plunger assembly.
    Type: Application
    Filed: September 8, 2011
    Publication date: March 15, 2012
    Inventors: Samuel D. Conzone, David M. Rusinko, Chandrashekar Raman, Indumathi Ramakrishnan, Anantharaman Dhanabalan, Mayank Kumar Dubey, Sumi Dinkar, Mayanglambam Rebika Devi, Markus Bley
  • Publication number: 20110082430
    Abstract: In one aspect, a self-lubriating component is provided for a pharmaceutical packaging assembly. The self-lubricating component comprises a polymer composition and an effective amount of a lubricating additive such as, for example, boron nitride. In another aspect, a pharmaceutical packaging assembly may be provided having a surface thereof coated with a lubricating composition comprising boron nitride. The pharmaceutical packaging composition may be, for example, a pre-filled syringe comprising a body (barrel) and a plunger assembly.
    Type: Application
    Filed: October 1, 2010
    Publication date: April 7, 2011
    Inventors: Samuel D. Conzone, David M. Rusinko, Chandrashekar Raman
  • Publication number: 20080153960
    Abstract: A boron nitride composition comprising at least two different boron nitride powder materials having different properties, e.g., surface areas, particle size, tap density, etc.
    Type: Application
    Filed: October 5, 2007
    Publication date: June 26, 2008
    Inventors: Paulo Meneghetti, Chandrashekar Raman