Patents by Inventor Alan Jun-Yuen Tam

Alan Jun-Yuen Tam 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).

  • Method of electroplating a nickel-iron alloy film with a graduated composition
    Patent number: 6599411
    Abstract: In the NiFe electroplating method of the present invention, the atomic percent (at. %) composition of Ni and Fe in NiFe electroplated material is controlled by selection of the duty cycle of the electroplating current during the electroplating process. Generally, for a particular electroplating bath, where the electroplating current duty cycle is greatest the NiFe electroplated material has a higher Fe at. %, and where the electroplating current duty cycle is reduced, a lower Fe at. %. Therefore, electroplated NiFe components from a single electroplating bath can have differing NiFe concentrations where the electroplating current duty cycle is altered. Additionally, NiFe components can be electroplated with a graduated or changing Ni and Fe concentration by altering the electroplating current duty cycle during the electroplating process.
    Type: Grant
    Filed: April 20, 2001
    Date of Patent: July 29, 2003
    Assignee: Hitachi Global Storage Technologies Netherlands, B.V.
    Inventors: Thomas Edward Dinan, Neil Leslie Robertson, Alan Jun-Yuen Tam
  • Method of electroplating a nickel-iron alloy film with a graduated composition
    Publication number: 20020153255
    Abstract: In the NiFe electroplating method of the present invention, the atomic percent (at. %) composition of Ni and Fe in NiFe electroplated material is controlled by selection of the duty cycle of the electroplating current during the electroplating process. Generally, for a particular electroplating bath, where the electroplating current duty cycle is greatest the NiFe electroplated material has a higher Fe at. %, and where the electroplating current duty cycle is reduced, a lower Fe at. %. Therefore, electroplated NiFe components from a single electroplating bath can have differing NiFe concentrations where the electroplating current duty cycle is altered. Additionally, NiFe components can be electroplated with a graduated or changing Ni and Fe concentration by altering the electroplating current duty cycle during the electroplating process.
    Type: Application
    Filed: April 20, 2001
    Publication date: October 24, 2002
    Inventors: Thomas Edward Dinan, Neil Leslie Robertson, Alan Jun-Yuen Tam