Patents by Inventor Janardan Nath

Janardan Nath 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: 11656555
    Abstract: An illumination adjustment apparatus, to adjust a cross slot illumination of a beam in a lithographic apparatus, includes a plurality of fingers to adjust the cross slot illumination to conform to a selected intensity profile. Each finger has a distal edge that includes at least two segments. The two segments form an indentation of the distal edge.
    Type: Grant
    Filed: April 14, 2020
    Date of Patent: May 23, 2023
    Assignees: ASML HOLDING N.V., ASML NETHERLANDS B V
    Inventors: Janardan Nath, Kalyan Kumar Mankala, Todd R. Downey, Joseph Harry Lyons, Ozer Unluhisarcikli, Alexander Harris Ledbetter, Nicholas Stephen Apone, Tian Gang
  • Publication number: 20220390832
    Abstract: A method for source mask optimization or mask only optimization used to image a pattern onto a substrate. The method includes determining a non-uniform illumination intensity profile for illumination; and determining one or more adjustments for the pattern based on the non-uniform illumination intensity profile until a determination that features patterned onto a substrate substantially match a target design. The non-uniform illumination intensity profile may be determined based on an illumination optical system and projection optics of a lithographic apparatus. In some embodiments, the lithographic apparatus includes a slit, and the non-uniform illumination profile is a through slit non-uniform illumination intensity profile. Determining the one or more adjustments for the pattern may include performing optical proximity correction, for example.
    Type: Application
    Filed: November 18, 2020
    Publication date: December 8, 2022
    Applicants: ASML HOLDING N.V., ASML NETHERLANDS B.V.
    Inventors: Janardan NATH, Christopher John MASON, Duan-Fu Stephen HSU, Todd R. DOWNEY, Tian GANG
  • Publication number: 20220214622
    Abstract: An illumination adjustment apparatus, to adjust a cross slot illumination of a beam in a lithographic apparatus, includes a plurality of fingers to adjust the cross slot illumination to conform to a selected intensity profile. Each finger has a distal edge that includes at least two segments. The two segments form an indentation of the distal edge.
    Type: Application
    Filed: April 14, 2020
    Publication date: July 7, 2022
    Applicants: ASML HOLDING N.V., ASML NETHERLANDS B.V.
    Inventors: Janardan NATH, Kalyan Kumar MANKALA, Todd R. DOWNEY, Joseph Harry LYONS, Ozer UNLUHISARCIKLI, Alexander Harris LEDBETTER, Nicholas Stephen APONE, Tian GANG
  • Patent number: 10797676
    Abstract: Acoustic resonators with enhanced boundary conditions are disclosed. In an example aspect, a resonator includes a volume of piezoelectric material including an upper surface and a lower surface. The resonator also includes a bottom electrode extending along a portion of the lower surface of the volume of piezoelectric material. The resonator further includes a multi-layered top electrode extending along a portion of the upper surface of the volume of piezoelectric material. The multi-layered top electrode includes an active region including an interface layer of a first thickness, where the active region overlaps a portion of the bottom electrode. The multi-layered top electrode also includes a frame region including the interface layer of a second thickness, where the second thickness is greater than the first thickness. The multi-layered top electrode further includes an outer region including the interface layer of a third thickness, where the third thickness is less than the second thickness.
    Type: Grant
    Filed: September 15, 2017
    Date of Patent: October 6, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Oscar Menendez-Nadal, Thomas Bain Pollard, Brian Hal Fisher, Janardan Nath
  • Patent number: 10523179
    Abstract: Example implementations of a bulk acoustic wave resonator with an optimized outer perimeter are disclosed. In an example aspect, a resonator includes a truncated-ellipsoid-shaped active region. The active region includes an outer electrode disposed as a first layer of the active region. The active layer also includes a piezoelectric layer disposed as a second layer of the active region with the piezoelectric layer disposed interior to the outer electrode. The active layer further includes an inner electrode disposed as a third layer of the active region with the inner electrode disposed interior to the piezoelectric layer.
    Type: Grant
    Filed: September 18, 2017
    Date of Patent: December 31, 2019
    Assignee: SnapTrack, Inc.
    Inventors: Oscar Menendez-Nadal, Thomas Bain Pollard, Brian Hal Fisher, Janardan Nath
  • Publication number: 20190089326
    Abstract: Acoustic resonators with enhanced boundary conditions are disclosed. In an example aspect, a resonator includes a volume of piezoelectric material including an upper surface and a lower surface. The resonator also includes a bottom electrode extending along a portion of the lower surface of the volume of piezoelectric material. The resonator further includes a multi-layered top electrode extending along a portion of the upper surface of the volume of piezoelectric material. The multi-layered top electrode includes an active region including an interface layer of a first thickness, where the active region overlaps a portion of the bottom electrode. The multi-layered top electrode also includes a frame region including the interface layer of a second thickness, where the second thickness is greater than the first thickness. The multi-layered top electrode further includes an outer region including the interface layer of a third thickness, where the third thickness is less than the second thickness.
    Type: Application
    Filed: September 15, 2017
    Publication date: March 21, 2019
    Inventors: Oscar Menendez-Nadal, Thomas Bain Pollard, Brian Hal Fisher, Janardan Nath
  • Publication number: 20190089332
    Abstract: Example implementations of a bulk acoustic wave resonator with an optimized outer perimeter are disclosed. In an example aspect, a resonator includes a truncated-ellipsoid-shaped active region. The active region includes an outer electrode disposed as a first layer of the active region. The active layer also includes a piezoelectric layer disposed as a second layer of the active region with the piezoelectric layer disposed interior to the outer electrode. The active layer further includes an inner electrode disposed as a third layer of the active region with the inner electrode disposed interior to the piezoelectric layer.
    Type: Application
    Filed: September 18, 2017
    Publication date: March 21, 2019
    Inventors: Oscar Menendez-Nadal, Thomas Bain Pollard, Brian Hal Fisher, Janardan Nath
  • Patent number: 10101212
    Abstract: A wavelength selective bolometer includes a substrate configured to serve as a foundation for the apparatus and a thermal isolation gap established between the substrate and subsequent solid material layers. A conducting ground plane layer is disposed above the thermal isolation gap, and a first dielectric layer is mated to a top surface of the conducting ground plane. A temperature sensing material layer is mated to a top surface of the first dielectric layer, and a plurality of interconnects is placed in electrical communication with the temperature sensing material layer. A second dielectric layer is mated to a top surface of the temperature sensing material, and at least one conductive element is mated to a top surface of the second dielectric layer. The dimensions of the conductive element and other variables are chosen to achieve resonant absorption of selected wavelengths of radiation incident thereupon.
    Type: Grant
    Filed: March 13, 2017
    Date of Patent: October 16, 2018
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Justin W Cleary, Robert E Peale, Evan Smith, Janardan Nath