Patents by Inventor Robert W. Weeks, Jr.

Robert W. Weeks, Jr. 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).

  • Apparatus for ventilating controlled areas
    Patent number: 4905578
    Abstract: The apparatus includes a device adapted for removing contaminated air from a controlled area, cleansing this air using suitable filtration devices, and returning air having a safe level of contaminants mixed with a portion of fresh air or solely fresh air to the controlled area. The apparatus further includes barrier means for preventing contaminants from exiting the controlled area except through the air removal device which can be located either inside or outside of the controlled area.
    Type: Grant
    Filed: January 3, 1989
    Date of Patent: March 6, 1990
    Inventors: Michael S. Curtis, Robert W. Weeks, Jr.