Patents by Inventor Charles William Roberts

Charles William Roberts 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).

  • Conformable foam
    Patent number: 4121005
    Abstract: Foam material useful in preventing decubitus ulcers, said material being a relatively thick, perforated and cut foam sheet which is conformable.
    Type: Grant
    Filed: February 13, 1978
    Date of Patent: October 17, 1978
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Charles William Roberts