Patents by Inventor Iain P. Ellwood

Iain P. Ellwood 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).

  • Air cleaner
    Patent number: D379219
    Type: Grant
    Filed: September 21, 1995
    Date of Patent: May 13, 1997
    Assignee: U.S. Philips Corporation
    Inventor: Iain P. Ellwood
  • Air cleaner
    Patent number: D379220
    Type: Grant
    Filed: September 21, 1995
    Date of Patent: May 13, 1997
    Assignee: U.S. Philips Corporation
    Inventor: Iain P. Ellwood