Patents by Inventor James Frederick Chapel

James Frederick Chapel 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 removing anesthetic gases
    Patent number: 3941573
    Abstract: Apparatus is disclosed for removing medical anesthetic gases, after inhalation by a patient, in order to prevent these gases from being expelled into an operating room. In one embodiment, the apparatus includes a housing adapted to be connected into an anesthetic gas system, and a removable and disposable cartridge in the housing including at least two anesthetic gas adsorbent fillers. In other embodiments a disposable cartridge may be employed without a housing which can be readily connected into the anesthetic gas system.
    Type: Grant
    Filed: May 2, 1974
    Date of Patent: March 2, 1976
    Inventor: James Frederick Chapel