Patents by Inventor Warren Dahl

Warren Dahl 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).

  • Integrated circuit including a non-volatile memory device and a semiconductor device
    Patent number: 5925908
    Abstract: An integrated circuit (10) is formed on a semiconductor substrate (20) and includes a non-volatile memory device (12) and a semiconductor device (11). The non-volatile memory device (12) includes a dielectric layer (15) than has a nitrogen composition. The non-volatile memory device (12) also includes a silicon dioxide layer (33) that is also used to form part of the semiconductor device (11).
    Type: Grant
    Filed: July 30, 1997
    Date of Patent: July 20, 1999
    Assignee: Motorola, Inc.
    Inventors: Phillip Warren Dahl, Jitendra Jayantilal Makwana, Zhixu Zhou
  • Swaged collar fastener
    Patent number: 4943196
    Abstract: Predetermined limits are attained for the peak loads encountered when a composite assembly of workpieces is secured with a swaged collar fastener, by disposing cavities in the cylindrical wall of the fastener collar to receive material flow during the swaging operation. Rotation between the collar and pin of the fastener is precluded by disposing abutting portions on the pin, which interface against the swaged material of the collar. Fastener cost reductions are achieved by decreasing the volume of a post-swage scrap portion on the pin and by concurrently fabricating grooves thereon with a rolling die, for various functional purposes. Swaging tool malfunction is avoided by eliminating land surfaces adjacent to grooves on the pin through which pull is applied thereto with the tool.
    Type: Grant
    Filed: August 20, 1987
    Date of Patent: July 24, 1990
    Assignee: SPS Technologies, Inc.
    Inventor: Warren Dahl