Patents by Inventor Tushar Keshubhai Suther

Tushar Keshubhai Suther 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).

  • Magnetic recording disk having pre-patterned surface features and planarized surface
    Patent number: 8168311
    Abstract: A magnetic recording disk with pre-patterned surface features of elevated lands and recessed grooves or trenches, like a discrete-track media (DTM) or bit-patterned media (BPM) disk, has a planarized surface. A multilayered disk overcoat is used to protect the recording layer, and at least one of the overcoat layers functions as a stop layer for terminating a chemical-mechanical polishing (CMP) process that substantially planarizes the disk. All of the layers of the multilayered overcoat are located above the lands, but none of the overcoat layers, or a number of layers less than the number of layers over the lands, is located above the recesses.
    Type: Grant
    Filed: April 2, 2010
    Date of Patent: May 1, 2012
    Assignee: Hitachi Global Storage Technologies Netherlands B.V.
    Inventors: Charles Mathew Mate, Franck Dreyfus Rose, Kurt Allan Rubin, Steven Gary Schmid, Tushar Keshubhai Suther
  • MAGNETIC RECORDING DISK HAVING PRE-PATTERNED SURFACE FEATURES AND PLANARIZED SURFACE
    Publication number: 20110244273
    Abstract: A magnetic recording disk with pre-patterned surface features of elevated lands and recessed grooves or trenches, like a discrete-track media (DTM) or bit-patterned media (BPM) disk, has a planarized surface. A multilayered disk overcoat is used to protect the recording layer, and at least one of the overcoat layers functions as a stop layer for terminating a chemical-mechanical polishing (CMP) process that substantially planarizes the disk. All of the layers of the multilayered overcoat are located above the lands, but none of the overcoat layers, or a number of layers less than the number of layers over the lands, is located above the recesses.
    Type: Application
    Filed: April 2, 2010
    Publication date: October 6, 2011
    Inventors: Charles Mathew Mate, Franck Dreyfus Rose, Kurt Allan Rubin, Steven Gary Schmid, Tushar Keshubhai Suther