Patents by Inventor Johannes Thomas Paul

Johannes Thomas Paul 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).

  • Conductive stud for magnetic recording devices and method of making the same
    Patent number: 7336445
    Abstract: A magnetic recording device makes use of an “anchored” conductive stud which is securely attached within its surrounding insulator materials. The conductive stud is formed over a conductive layer which is coupled to or part of a read or a write head element of the magnetic recording device. The conductive stud has a top stud portion and a bottom undercut portion formed over the conductive layer. In one illustrated embodiment, the bottom undercut portion has a width that is greater than the width of the top stud portion. Since an insulator is formed around the conductive stud and over its bottom undercut portion, a secure coupling between the conductive stud and the conductive layer is provided. Preferably, the conductive layer is made of copper (Cu), the conductive stud is made of gold (Au), and the insulator is alumina (Al2O3). A seed layer may be formed between the conductive stud and the conductive layer. A method of making the conductive stud using a photolithography process is also disclosed.
    Type: Grant
    Filed: January 4, 2006
    Date of Patent: February 26, 2008
    Assignee: Hitachi Global Storage Technologies Netherlands B.V.
    Inventors: Rainer Klaus Krause, Jan Marien, Johannes Thomas Paul, Gunther Wilhelm Sandmann, Gerhard Anton Scherb, Hubert Erwin Schuy, Stefan Seifried
  • Method of making conductive stud for magnetic recording devices
    Patent number: 7020959
    Abstract: Methods of making a magnetic recording device with an “anchored” conductive stud which is securely attached within its surrounding insulator materials. The conductive stud is formed over a conductive layer which is coupled to or part of a read or a write head element of the magnetic recording device. The conductive stud has a top stud portion and a bottom undercut portion formed over the conductive layer. In one illustrated embodiment, the bottom undercut portion has a width that is greater than the width of the top stud portion. Since an insulator is formed around the conductive stud and over its bottom undercut portion, a secure coupling between the conductive stud and the conductive layer is provided. Preferably, the conductive layer is made of copper (Cu), the conductive stud is made of gold (Au), and the insulator is alumina (Al2O3). A seed layer may be formed between the conductive stud and the conductive layer.
    Type: Grant
    Filed: December 6, 2002
    Date of Patent: April 4, 2006
    Assignee: Hitachi Global Storage Technologies Netherlands B.V.
    Inventors: Rainer Klaus Krause, Jan Marien, Johannes Thomas Paul, Gunther Wilhelm Sandmann, Gerhard Anton Scherb, Hubert Erwin Schuy, Stefan Seifried
  • Conductive stud for magnetic recording devices and method of making the same
    Publication number: 20040109258
    Abstract: A magnetic recording device makes use of an “anchored” conductive stud which is securely attached within its surrounding insulator materials. The conductive stud is formed over a conductive layer which is coupled to or part of a read or a write head element of the magnetic recording device. The conductive stud has a top stud portion and a bottom undercut portion formed over the conductive layer. In one illustrated embodiment, the bottom undercut portion has a width that is greater than the width of the top stud portion. Since an insulator is formed around the conductive stud and over its bottom undercut portion, a secure coupling between the conductive stud and the conductive layer is provided. Preferably, the conductive layer is made of copper (Cu), the conductive stud is made of gold (Au), and the insulator is alumina (Al2O3). A seed layer may be formed between the conductive stud and the conductive layer. A method of making the conductive stud using a photolithography process is also disclosed.
    Type: Application
    Filed: December 6, 2002
    Publication date: June 10, 2004
    Inventors: Rainer Klaus Krause, Jan Marien, Johannes Thomas Paul, Gunther Wilhelm Sandmann, Gerhard Anton Scherb, Hubert Erwin Schuy, Stefan Seifried