Patents by Inventor Nilesh Gunda

Nilesh Gunda 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: 20230323248
    Abstract: The invention provides compositions useful in post-CMP cleaning operations where ceria is present. In one aspect, the invention provides a composition comprising a reducing agent; a chelating agent; an amino(C6-C12 alkyl)alcohol; and water; wherein the composition has a pH of less than about 8. The compositions of the invention were found to show improved ceria removal on, for example, poly silicon (poly Si) substrates. Also provided is a method for cleaning a microelectronic device substrate using such compositions and a kit comprising, in one or more containers, selected components of the compositions.
    Type: Application
    Filed: March 21, 2023
    Publication date: October 12, 2023
    Inventors: Volley Wang, Atanu K. Das, Michael L. White, Chun-I Lee, Nilesh Gunda, Daniela White, Donald Frye
  • Publication number: 20220298639
    Abstract: Described are substrates that include high aspect ratio surfaces and non-high aspect ratio surfaces, at least two coatings, one coating at high aspect ratio surfaces and a second coating at non-high aspect ratio surfaces, and having fluorinated outer surfaces; methods of preparing these coatings; and substrates, surfaces, equipment, and components of equipment that include the coatings.
    Type: Application
    Filed: March 16, 2022
    Publication date: September 22, 2022
    Inventors: Nilesh Gunda, Jayasri Narayanamoorthy, Carlo Waldfried
  • Publication number: 20220154325
    Abstract: Articles and methods relating to coatings having superior plasma etch-resistance and which can prolong the life of RIE components are provided. An article has a vacuum compatible substrate and a protective film overlying at least a portion of the substrate. The film comprises a fluorinated metal oxide containing yttrium wherein the yttrium oxide is deposited using an AC power source. The film has a fluorine atomic % of at least 10 at a depth of 30% of the total thickness of the film and the film has no subsurface cracks below the surface of the film visible when using a laser confocal microscope to view the full depth of the film at a magnification of 1000×.
    Type: Application
    Filed: November 16, 2021
    Publication date: May 19, 2022
    Inventors: Nilesh Gunda, Jijun Lao, Samuel J. Angeloni, Wolfram Neff
  • Patent number: 10961617
    Abstract: Articles and methods relating to coatings having superior plasma etch-resistance and which can prolong the life of RIE components are provided. An article has a vacuum compatible substrate and a protective film overlying at least a portion of the substrate. The film comprises a fluorinated metal oxide containing yttrium.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: March 30, 2021
    Assignee: ENTEGRIS, INC.
    Inventors: I-Kuan Lin, Nilesh Gunda, Dennis Radgowski, Chandra Venkatraman
  • Publication number: 20200378011
    Abstract: Coatings applicable to a variety of substrate articles, structures, materials, and equipment are described. In various applications, the substrate includes metal surface susceptible to formation of oxide, nitride, fluoride, or chloride of such metal thereon, wherein the metal surface is configured to be contacted in use with gas, solid, or liquid that is reactive therewith to form a reaction product that is deleterious to the substrate article, structure, material, or equipment. The metal surface is coated with a protective coating preventing reaction of the coated surface with the reactive gas, and/or otherwise improving the electrical, chemical, thermal, or structural properties of the substrate article or equipment. Various methods of coating the metal surface are described, and for selecting the coating material that is utilized.
    Type: Application
    Filed: June 10, 2020
    Publication date: December 3, 2020
    Inventors: Bryan C. Hendrix, David W. Peters, Weimin Li, Carlo Waldfried, Richard A. Cooke, Nilesh Gunda, I-Kuan Lin
  • Patent number: 10840067
    Abstract: A fluorine plasma resistant coating on a substrate being a component in a semiconductor manufacturing system is disclosed. In one embodiment the composition includes an AlON coating that overlies a substrate, and an optional yttria coating layer that overlies the AlON coating, with a total coating thickness of about 5-6 microns.
    Type: Grant
    Filed: August 8, 2017
    Date of Patent: November 17, 2020
    Assignee: ENTEGRIS, INC.
    Inventor: Nilesh Gunda
  • Publication number: 20190100842
    Abstract: Coatings applicable to a variety of substrate articles, structures, materials, and equipment are described. In various applications, the substrate includes metal surface susceptible to formation of oxide, nitride, fluoride, or chloride of such metal thereon, wherein the metal surface is configured to be contacted in use with gas, solid, or liquid that is reactive therewith to form a reaction product that deleterious to the substrate article, structure material, or equipment. The metal surface is coated with a protective coating preventing reaction of the coated surface with the reactive gas, and/or otherwise improving the electrical, chemical, thermal, or structural properties of the substrate article or equipment. Various methods of coating the metal surface are described, and for selecting the coating material that is utilized.
    Type: Application
    Filed: September 6, 2018
    Publication date: April 4, 2019
    Inventors: Bryan C. Hendrix, David W. Peters, Weimin Li, Carlo Waldfried, Richard A. Cooke, Nilesh Gunda, I-Kuan Lin
  • Publication number: 20180044800
    Abstract: Coatings applicable to a variety of substrate articles, structures, materials, and equipment are described. In various applications, the substrate includes metal surface susceptible to formation of oxide, nitride, fluoride, or chloride of such metal thereon, wherein the metal surface is configured to be contacted in use with gas, solid, or liquid that is reactive therewith to form a reaction product that is deleterious to the substrate article, structure, material, or equipment. The metal surface is coated with a protective coating preventing reaction of the coated surface with the reactive gas, and/or otherwise improving the electrical, chemical, thermal, or structural properties of the substrate article or equipment. Various methods of coating the metal surface are described, and for selecting the coating material that is utilized.
    Type: Application
    Filed: February 13, 2016
    Publication date: February 15, 2018
    Inventors: Bryan C. Hendrix, David W. Peters, Weimin Li, Carlo Waldfried, Richard A. Cooke, Nilesh Gunda, I-Kuan Lin
  • Publication number: 20170338082
    Abstract: A fluorine plasma resistant coating on a substrate being a component in a semiconductor manufacturing system is disclosed. In one embodiment the composition includes an AlON coating that overlies a substrate, and an optional yttria coating layer that overlies the AlON coating, with a total coating thickness of about 5-6 microns.
    Type: Application
    Filed: August 8, 2017
    Publication date: November 23, 2017
    Inventor: Nilesh Gunda
  • Patent number: 9761417
    Abstract: A fluorine plasma resistant coating on a substrate being a component in a semiconductor manufacturing system is disclosed. In one embodiment the composition includes an AlON coating that overlies a substrate, and an optional yttria coating layer that overlies the AlON coating, with a total coating thickness of about 5-6 microns.
    Type: Grant
    Filed: August 9, 2012
    Date of Patent: September 12, 2017
    Assignee: ENTEGRIS, INC.
    Inventor: Nilesh Gunda
  • Publication number: 20160273095
    Abstract: Articles and methods relating to coatings having superior plasma etch-resistance and which can prolong the life of RIE components are provided. An article has a vacuum compatible substrate and a protective film overlying at least a portion of the substrate. The film comprises a fluorinated metal oxide containing yttrium.
    Type: Application
    Filed: September 30, 2015
    Publication date: September 22, 2016
    Inventors: I-Kuan Lin, Nilesh Gunda, Dennis Radgowski, Chandra Venkatraman
  • Publication number: 20140178679
    Abstract: A fluorine plasma resistant coating on a ceramic substrate is disclosed. In one embodiment the composition includes an AlON coating that is about 2 microns thick that overlies a substrate, and having an optional yttria coating layer that is about 3 microns thick overlies the AlON coating.
    Type: Application
    Filed: August 9, 2012
    Publication date: June 26, 2014
    Applicant: ENTEGRIS, INC.
    Inventor: Nilesh Gunda
  • Publication number: 20130108863
    Abstract: In accordance with an embodiment of the invention, there is provided a coated graphite article. The article comprises graphite; and a conductive coating overlaying at least a portion of the graphite. The conductive coating comprises a through-thickness resistance of less than about 50 ohms as measured through the thickness of the graphite and the conductive coating. In accordance with another embodiment of the invention, there is provided a method for manufacturing a graphite article comprising a conductive coating. The method comprises treating graphite of the article with a reactive ion etch process; and after treating the graphite with the reactive ion etch process, applying the conductive coating over at least a portion of the graphite. In a further embodiment according to the invention, there is provided a method for refurbishing a graphite article comprising graphite and an overlaying conductive coating.
    Type: Application
    Filed: April 15, 2011
    Publication date: May 2, 2013
    Inventors: Richard A. Cooke, Nilesh Gunda, Steven Donnell, Yan Liu