Patents by Inventor Vijay Prakash

Vijay Prakash 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: 20150206545
    Abstract: Embodiments of the present invention generally relate to a HAMR head including a near field transducer having an antenna, a surface diffusion inhibitor layer disposed on a portion of the antenna and an aperture disposed over the surface diffusion inhibitor layer. The surface diffusion inhibitor layer has a greater melting point than the antenna, and the surface diffusion inhibitor layer material is immiscible in the antenna material.
    Type: Application
    Filed: March 4, 2015
    Publication date: July 23, 2015
    Inventors: Hamid BALAMANE, Vijay Prakash Singh RAWAT
  • Publication number: 20150186836
    Abstract: The present subject matter relates to method(s) and system(s) to manage home inventory based on health of a user. The method comprises obtaining at least one health target for the user, wherein the at least one target is related to at least one health parameter. Further, querying a recipe recommender data to recommend at least one recipe based on the at least one health target. The method further comprises ascertaining the availability of one or more items to be used in the at least one recipe in a home inventory of the user, wherein the availability is ascertained based on an available stock and expiry date, and wherein the available stock of each item from among the one or more items is determined periodically, by using a core analytics engine, to manage the home inventory and health of the user.
    Type: Application
    Filed: December 31, 2013
    Publication date: July 2, 2015
    Applicant: TATA CONSULTANCY SERVICES LIMITED
    Inventors: Himanshu CHOUHAN, Murugan K, Vijay Prakash SRINIVASAN
  • Publication number: 20150170683
    Abstract: The present invention generally relates to a HAMR head. An insulating layer isolates the NFT from the magnetic lip of the magnetic pole. A noble metal alloy diffusion barrier layer is present between the insulating layer and the magnetic lip to prevent diffusion from the insulating layer into the magnetic lip. The noble metal alloy has a melting point of greater than about 1065 degrees Celsius, and the noble metals may be selected from Au, Pt, Ir, Re and Ru. The alloying elements comprise less than 10 percent of the alloy. The alloying elements can include Rh, W, Mo, Ni, Pt, Co, B, Ru and combinations thereof. The diffusion barrier layer may surround the magnetic lip, may surround the insulating layer, or may simply be at the interface of the insulating layer and the magnetic lip.
    Type: Application
    Filed: December 18, 2013
    Publication date: June 18, 2015
    Applicant: HGST Netherlands B.V.
    Inventors: Hamid BALAMANE, Vijay Prakash Singh RAWAT, Matteo STAFFARONI, Barry C. STIPE
  • Publication number: 20150170685
    Abstract: The embodiments of the present invention generally relate to a magnetic head having a magnetic lip. The vertical sides and the bottom of the magnetic lip are covered by one or more conductive layers. In one embodiment, the bottom of the magnetic lip is covered by a first conductive layer and the vertical sides of the magnetic lip are covered by a second conductive layer. The conductive layers are made of a material that would not react with oxygen, thus no oxide films are formed on the vertical sides and the bottom of the magnetic lip during the manufacturing of the magnetic head.
    Type: Application
    Filed: March 2, 2015
    Publication date: June 18, 2015
    Inventors: Hamid BALAMANE, Vijay Prakash Singh RAWAT, Matteo STAFFARONI
  • Patent number: 9047908
    Abstract: A heat-assisted magnetic recording (HAMR) head in which the core of the optical waveguide has an end face that abuts the NFT and the write pole lip has a diffusion barrier between the end face of the waveguide core and the write pole lip. The diffusion barrier layer may also be located between the waveguide core end face and the NFT, in which case it is formed of an optically transparent material, like TaNx, TiNx, ZrNx, HfNx, NbNx, CrNx, VNx, TiC, TaC, WC, SiC or SiNx, or a layer of Au, Ru, Rh or Ir with a thickness less than 5 nm. In addition to being located between both the NFT and the write pole lip and the waveguide core end face, the diffusion barrier layer may also be located between the waveguide core and the lower waveguide cladding layer.
    Type: Grant
    Filed: April 23, 2013
    Date of Patent: June 2, 2015
    Assignee: HGST Netherlands B.V.
    Inventors: Vijay Prakash Singh Rawat, Neil Leslie Robertson
  • Publication number: 20150122772
    Abstract: A method of forming a wave guide for a heat assisted magnetic recording slider of a disk drive includes depositing a layer of waveguide material onto a substrate, and depositing a layer of a hard mask material onto the waveguide material. The method then includes depositing a layer of photoresist onto the hard mask material, and exposing the photoresist to produce a hard mask pattern that includes a waveguide pattern. The method also includes stripping the photoresist material leaving the hard mask pattern having a first line edge roughness. The method also includes removing the waveguide material not covered by the hard mask, the waveguide having sidewalls which having a line edge roughness which is substantially equal to the first line edge roughness. Also disclosed is an apparatus for accomplishing the method.
    Type: Application
    Filed: November 7, 2013
    Publication date: May 7, 2015
    Applicant: HGST Netherlands B.V.
    Inventors: Thomas William CLINTON, Kanaiyalal Chaturdas PATEL, Vijay Prakash Singh RAWAT, Sue Siyang ZHANG
  • Patent number: 8988827
    Abstract: Embodiments of the present invention generally relate to a HAMR head including a near field transducer having an antenna, a surface diffusion inhibitor layer disposed on a portion of the antenna and an aperture disposed over the surface diffusion inhibitor layer. The surface diffusion inhibitor layer has a greater melting point than the antenna, and the surface diffusion inhibitor layer material is immiscible in the antenna material.
    Type: Grant
    Filed: January 17, 2014
    Date of Patent: March 24, 2015
    Assignee: HGST Netherlands B.V.
    Inventors: Hamid Balamane, Vijay Prakash Singh Rawat
  • Patent number: 8976489
    Abstract: The embodiments of the present invention generally relate to a magnetic head having a magnetic lip. The vertical sides and the bottom of the magnetic lip are covered by one or more conductive layers. In one embodiment, the bottom of the magnetic lip is covered by a first conductive layer and the vertical sides of the magnetic lip are covered by a second conductive layer. The conductive layers are made of a material that would not react with oxygen, thus no oxide films are formed on the vertical sides and the bottom of the magnetic lip during the manufacturing of the magnetic head.
    Type: Grant
    Filed: May 31, 2013
    Date of Patent: March 10, 2015
    Assignee: HGST Netherlands B.V.
    Inventors: Hamid Balamane, Vijay Prakash Singh Rawat, Matteo Staffaroni
  • Publication number: 20140355400
    Abstract: The embodiments of the present invention generally relate to a magnetic head having a magnetic lip. The vertical sides and the bottom of the magnetic lip are covered by one or more conductive layers. In one embodiment, the bottom of the magnetic lip is covered by a first conductive layer and the vertical sides of the magnetic hp are covered by a second conductive layer. The conductive layers are made of a material that would not react with oxygen, thus no oxide films are formed on the vertical sides and the bottom of the magnetic lip during the manufacturing of the magnetic head.
    Type: Application
    Filed: May 31, 2013
    Publication date: December 4, 2014
    Applicant: HGST NETHERLANDS B.V.
    Inventors: Hamid BALAMANE, Vijay Prakash Singh RAWAT, Matteo STAFFARONI
  • Publication number: 20140313872
    Abstract: A heat-assisted magnetic recording (HAMR) head in which the core of the optical waveguide has an end face that abuts the NFT and the write pole lip has a diffusion barrier between the end face of the waveguide core and the write pole lip. The diffusion barrier layer may also be located between the waveguide core end face and the NFT, in which case it is formed of an optically transparent material, like TaNx, TiNx, ZrNx, HfNX, NbNx, CrNx, VNx, TiC, TaC, WC, SiC or SiNx, or a layer of Au, Ru, Rh or Ir with a thickness less than 5 nm. In addition to being located between both the NFT and the write pole lip and the waveguide core end face, the diffusion barrier layer may also be located between the waveguide core and the lower waveguide cladding layer.
    Type: Application
    Filed: April 23, 2013
    Publication date: October 23, 2014
    Applicant: HGST Netherlands B.V.
    Inventors: Vijay Prakash Singh Rawat, Neil Leslie Robertson
  • Publication number: 20130067378
    Abstract: Various embodiments provide a user interface that displays a history of resource usage of a computing device's applications over time. Historical resource usage data can be presented in a manner which informs the user, on an application-by-application basis, of each application's resource usage across a plurality of resources. In at least some embodiments, the user interface can provide one or more instrumentalities that enable the user to interact with and/or modify operational characteristics of various applications based upon the presented historical resource usage data.
    Type: Application
    Filed: September 9, 2011
    Publication date: March 14, 2013
    Applicant: Microsoft Corporation
    Inventors: Jonathan M. Au, Peter Seraphim Ponomarev, Sharif S. Farag, Kevin Michael Woley, Sharad Kylasam, Mark Yalovsky, Krishna Venkatesh, Shankar Seal, Srinivas Raghu Gatta, Rajeev Agrawal, Vijay Prakash
  • Patent number: 8252437
    Abstract: A magnetic recording disk has surface features of elevated lands and recessed grooves, and a planarized upper surface. A chemical-mechanical-polishing (CMP) stop layer is deposited over the lands and into the recesses. An adhesion film, like silicon, is deposited over the CMP stop layer, and fill material containing a silicon oxide (SiOx) is deposited over and in contact with the adhesion film. The adhesion film improves the adhesion of the SiOx fill material and prevents delamination during a subsequent two-step CMP planarizing process.
    Type: Grant
    Filed: October 28, 2010
    Date of Patent: August 28, 2012
    Assignee: Hitachi Global Storage Technologies Netherlands B.V.
    Inventors: Vijay Prakash Singh Rawat, Kurt Allan Rubin
  • Publication number: 20120107646
    Abstract: A magnetic recording disk has surface features of elevated lands and recessed grooves, and a planarized upper surface. A chemical-mechanical-polishing (CMP) stop layer is deposited over the lands and into the recesses. An adhesion film, like silicon, is deposited over the CMP stop layer, and fill material containing a silicon oxide (SiOx) is deposited over and in contact with the adhesion film. The adhesion film improves the adhesion of the SiOx fill material and prevents delamination during a subsequent two-step CMP planarizing process.
    Type: Application
    Filed: October 28, 2010
    Publication date: May 3, 2012
    Applicant: HITACHI GLOBAL STORAGE TECHNOLOGIES NETHERLANDS B.V.
    Inventors: Vijay Prakash Singh Rawat, Kurt Allan Rubin
  • Publication number: 20090283747
    Abstract: A light emitting diode having a metallized silicon substrate including a silicon base, a buffer layer disposed on the silicon base, a metal layer disposed on the buffer layer, and light emitting layers disposed on the metal layer. The buffer layer can be AlN, and the metal layer ZrN. The light emitting layers can include GaN and InGaN. The metallized silicon substrate can also include an oxidation prevention layer disposed on the metal layer. The oxidation prevention layer can be AlN. The light emitting diode can be formed using an organometallic vapor phase epitaxy process. The intermediate ZrN/AlN layers enable epitaxial growth of GaN on silicon substrates using conventional organometallic vapor phase epitaxy. The ZrN layer provides an integral back reflector, ohmic contact to n-GaN. The AlN layer provides a reaction barrier, thermally conductive interface layer, and electrical isolation layer.
    Type: Application
    Filed: April 15, 2009
    Publication date: November 19, 2009
    Inventors: Mark Oliver Harwood, Vijay Prakash Singh Rawat, Timothy David Sands, Jeremy Leroy Schroeder