Patents by Inventor D. Richard Ryan

D. Richard Ryan 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).

  • Patent number: D444337
    Type: Grant
    Filed: January 26, 2001
    Date of Patent: July 3, 2001
    Assignee: Parkersburg Road Corp.
    Inventors: D. Richard Ryan, Lorenzo Porcelli
  • Patent number: D445294
    Type: Grant
    Filed: January 26, 2001
    Date of Patent: July 24, 2001
    Assignee: Parkersburg Road Corp.
    Inventors: D. Richard Ryan, Lorenzo Porcelli
  • Patent number: D469301
    Type: Grant
    Filed: January 26, 2001
    Date of Patent: January 28, 2003
    Assignee: Parkersburg Road Corp.
    Inventors: D. Richard Ryan, Lorenzo Porcelli
  • Patent number: D469655
    Type: Grant
    Filed: February 28, 2001
    Date of Patent: February 4, 2003
    Assignee: Parkersburg Road Corp.
    Inventors: D. Richard Ryan, Lorenzo Porcelli