Patents by Inventor Nathan Ellis Jacobson

Nathan Ellis Jacobson 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: 7197897
    Abstract: A salt mixture used for chemical strengthening of data recording disks is subjected to sub-micron filtration prior to use to remove certain impurities. Preferably, glass disks are chemically strengthened by ion exchange in a bath of molten sodium nitrate and potassium nitrate. A salt fresh mixture is prepared by starting with high-grade bulk salt in the intended proportions, melting the salt, and filtering the salt in a stainless steel filter, which is preferably approximately 2 micron or smaller. Filtration removes trace amounts of certain contaminants. The salt mixture thus prepared is then used for chemical strengthening of disks in the conventional manner.
    Type: Grant
    Filed: April 4, 2002
    Date of Patent: April 3, 2007
    Assignee: Hitachi Global Storage Technologies Netherlands B.V.
    Inventors: Nathan Ellis Jacobson, Terry Lee Jensen, Rick Allan Sprague
  • Publication number: 20030188552
    Abstract: A salt mixture used for chemical strengthening of data recording disks is subjected to sub-micron filtration prior to use to remove certain impurities. Preferably, glass disks are chemically strengthened by ion exchange in a bath of molten sodium nitrate and potassium nitrate. A salt fresh mixture is prepared by starting with high-grade bulk salt in the intended proportions, melting the salt, and filtering the salt in a stainless steel filter, which is preferably approximately 2 micron or smaller. Filtration removes trace amounts of certain contaminants. The salt mixture thus prepared is then used for chemical strengthening of disks in the conventional manner.
    Type: Application
    Filed: April 4, 2002
    Publication date: October 9, 2003
    Applicant: International Business Machines Corporation
    Inventors: Nathan Ellis Jacobson, Terry Lee Jensen, Rick Allan Sprague
  • Patent number: 6571964
    Abstract: A tray for retaining disks includes first and second longitudinally extending, spaced apart, parallel rods. A plurality of support plates are directly attached to the rods. Each support plate has at least one notch formed therein for receiving a respective support member. A plurality of rails are attached to the support plates. At least three spaced apart wires are provided. Each wire is formed to have a zigzag configuration adapted to receive and support the disk at an outer peripheral edge thereof. One of the wires is disposed to contact the outer periphery of the disk at a position of zero degrees, another one of the wires is disposed to contact the outer periphery of the disk at a position less than 90 degrees, and a further one of the wires is disposed to contact the outer periphery of the disk at a position greater than 270 degrees.
    Type: Grant
    Filed: March 28, 2001
    Date of Patent: June 3, 2003
    Assignee: International Business Machines Corporation
    Inventors: Nathan Ellis Jacobson, Mark LeMarr Kyllo, Steven F. Starcke
  • Publication number: 20020139763
    Abstract: A tray for retaining disks includes first and second longitudinally extending, spaced apart, parallel rods. A plurality of support plates are directly attached to the rods. Each support plate has at least one notch formed therein for receiving a respective support member. A plurality of rails are attached to the support plates. At least three spaced apart wires are provided. Each wire is formed to have a zigzag configuration adapted to receive and support the disk at an outer peripheral edge thereof. One of the wires is disposed to contact the outer periphery of the disk at a position of zero degrees, another one of the wires is disposed to contact the outer periphery of the disk at a position less than 90 degrees, and a further one of the wires is disposed to contact the outer periphery of the disk at a position greater than 270 degrees.
    Type: Application
    Filed: March 28, 2001
    Publication date: October 3, 2002
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Nathan Ellis Jacobson, Mark LeMarr Kyllo, Steven F. Starcke