Patents by Inventor Muhammad Inayet Ullah

Muhammad Inayet Ullah 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).

  • Vacuum baking process
    Patent number: 6051169
    Abstract: A method of degassing a disk drive component including heating the drive component to a temperature ranging from about 70.degree. C. to 250.degree. C.; subjecting the drive component to vacuum pressure during heating, the vacuum pressure having a first pressure and a second pressure; and monitoring the vacuum pressure to determine the level of degassing of the disk drive component.
    Type: Grant
    Filed: August 27, 1997
    Date of Patent: April 18, 2000
    Assignee: International Business Machines Corporation
    Inventors: Charles Allan Brown, John Martin Burns, Holavanahally Seshachar Nagaraj, James Joseph O'Neill, Muhammad Inayet Ullah, Leo Volpe, Herman Russell Wendt
  • Method of making magnetic disk with boron carbide overcoat layer and adhesion layer
    Patent number: 6010601
    Abstract: A significantly thinner boron carbide overcoat layer is provided for a magnetic disk which has the same durability as thicker prior art overcoat layers for protecting an underlying magnetic layer. By employing adhesion layers selected from the group consisting of Ge, Ru, WTiSi, WTi, Si, and Y between the magnetic layer and the overcoat layer, the durability of the overcoat layer is significantly increased over a single overcoat layer of B4C. Certain process steps in the making of the B4C overcoat layer still further enhance the durability of the B4C overcoat layer by maintaining the disk or substrate specimen at a floating potential in a plasma chamber and employing low levels of argon pressure and sputtering wattage.
    Type: Grant
    Filed: November 26, 1997
    Date of Patent: January 4, 2000
    Assignee: International Business Machines Corporation
    Inventors: Richard Henry Ahlert, James Kent Howard, Muhammad Inayet Ullah, Richard Donald Umphress
  • Magnetic disk with boron carbide overcoat layer
    Patent number: 5897931
    Abstract: A significantly thinner boron carbide overcoat layer is provided for a magnetic disk which has the same durability as thicker prior art overcoat layers for protecting an underlying magnetic layer. By employing adhesion layers selected from the group consisting of Ge, Ru, WTiSi, WTi, Si, and Y between the magnetic layer and the overcoat layer, the durability of the overcoat layer is significantly increased over a single overcoat layer of B4C. Certain process steps in the making of the B4C overcoat layer still further enhance the durability of the B4C overcoat layer by maintaining the disk or substrate specimen at a floating potential in a plasma chamber and employing low levels of argon pressure and sputtering wattage.
    Type: Grant
    Filed: May 15, 1996
    Date of Patent: April 27, 1999
    Assignee: International Business Machines Corporation
    Inventors: Richard Henry Ahlert, James Kent Howard, Muhammad Inayet Ullah, Richard Donald Umphress
  • Magnetic disk with boron carbide overcoat layer
    Patent number: 5750231
    Abstract: A significantly thinner boron carbide overcoat layer is provided for a magnetic disk which has the same durability as thicker prior art overcoat layers for protecting an underlying magnetic layer. By employing adhesion layers selected from the group consisting of Ge, Ru, WTiSi, WTi, Si, and Y between the magnetic layer and the overcoat layer, the durability of the overcoat layer is significantly increased over a single overcoat layer of B4C. Certain process steps in the making of the B4C overcoat layer still further enhance the durability of the B4C overcoat layer by maintaining the disk or substrate specimen at a floating potential in a plasma chamber and employing low levels of argon pressure and sputtering wattage.
    Type: Grant
    Filed: April 3, 1996
    Date of Patent: May 12, 1998
    Assignee: International Business Machines Corporation
    Inventors: Richard Henry Ahlert, James Kent Howard, Muhammad Inayet Ullah, Richard Donald Umphress