Patents by Inventor Donald Robert Wolters

Donald Robert Wolters 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).

  • Non-volatile memory cells, high voltage transistors and logic transistors integrated on a single chip
    Patent number: 6815755
    Abstract: Semiconductor device having on a single substrate (1) at least one memory cell (3) and at least one logic transistor (25); the at least one memory cell having a floating gate (5), a tunnel oxide layer (11) between the floating gate and the substrate (1), a control gate (15), and a control oxide layer (13) between the control gate (15) and the floating gate (5); the at least one logic transistor (25) having a logic transistor gate (5′, 15″) and a logic transistor gate oxide (11″) between the logic transistor gate (5′, 15″) and the substrate (1), the tunnel oxide layer (11) of the memory cell (3) and the logic transistor gate oxide (11″) having a same or substantially same predetermined first thickness. The invention also relates to a method of manufacturing such a device and to such a device that also comprises a high voltage transistor (17) which is optionally made so as to be an integral part of at least the memory cell (3).
    Type: Grant
    Filed: March 18, 2003
    Date of Patent: November 9, 2004
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Roy Arthur Colclaser, Guido Jozef Maria Dormans, Donald Robert Wolters
  • Non-volatile memory cells, high voltage transistors and logic transistors integrated on a single chip
    Publication number: 20030168694
    Abstract: Semiconductor device having on a single substrate (1) at least one memory cell (3) and at least one logic transistor (25);
    Type: Application
    Filed: March 18, 2003
    Publication date: September 11, 2003
    Applicant: U.S. PHILIPS CORPORATION
    Inventors: Roy Arthur Colclaser, Guido Jozef Maria Dormans, Donald Robert Wolters
  • NON-VOLATILE MEMORY CELLS, HIGH VOLTAGE TRANSISTORS AND LOGIC TRANSISTORS INTEGRATED ON A SINGLE CHIP
    Publication number: 20010004120
    Abstract: Semiconductor device having on a single substrate (1) at least one memory cell (3) and at least one logic transistor (25);
    Type: Application
    Filed: December 21, 2000
    Publication date: June 21, 2001
    Inventors: Roy Arthur Colclaser, Guido Jozef Maria Dormans, Donald Robert Wolters