Patents by Inventor R. Dean Doonan

R. Dean Doonan 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).

  • Hole plug for insulated injection wall holes
    Patent number: 4137680
    Abstract: An exterior building wall includes insulation injection holes filled by hole plugs. The hole plugs each include a disc-shaped circular outwardly convex head. Arcuate in transverse cross-section legs are radially inwardly offset from the outer peripheral edge of the head. The legs include a series of longitudinally outwardly tapering shoulders which form wall gripping and sealing teeth.
    Type: Grant
    Filed: June 8, 1977
    Date of Patent: February 6, 1979
    Inventor: R. Dean Doonan
  • Insulation injection hole plug
    Patent number: D259466
    Type: Grant
    Filed: July 28, 1978
    Date of Patent: June 9, 1981
    Inventor: R. Dean Doonan
  • Insulation injection hole plug
    Patent number: D261357
    Type: Grant
    Filed: July 28, 1978
    Date of Patent: October 20, 1981
    Inventor: R. Dean Doonan