Patents by Inventor Maxwell R. Derrick

Maxwell R. Derrick 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).

  • Blood monitoring system
    Patent number: 4758083
    Abstract: A blood monitoring system for the contents of blood bag B utilizes rigid optically clear tablet (16) bonded to rough outer surfaces of the walls of the bag to provide windows through the bag. The bag is gripped by a pair of tongs T the jaws of which have openings to receive the tablets. The outer surfaces of the jaws have ribs (33) and buttons (36) to locate the tongs, and hence the bag, accurately in position in a monitoring device, with the windows (16) in alignment with an optical system of the device.
    Type: Grant
    Filed: April 24, 1987
    Date of Patent: July 19, 1988
    Assignee: Bellhouse Technology Limited
    Inventors: Brian J. Bellhouse, Sydney M. Pugh, Maxwell R. Derrick
  • Blood monitoring system
    Patent number: 4675019
    Abstract: A blood monitoring system for the contents of blood bag B utilizes rigid optically clear tablet (16) bonded to rough outer surfaces of the walls of the bag to provide windows through the bag. The bag is gripped by a pair of tongs T the jaws of which have openings to receive the tablets. The outer surfaces of the jaws have ribs (33) and buttons (36) to locate the tongs, and hence the bag, accurately in position in a monitoring device, with the windows (16) in alignment with an optical system of the device.
    Type: Grant
    Filed: October 24, 1985
    Date of Patent: June 23, 1987
    Assignee: Bellhouse Medical Products Limited
    Inventors: Brian J. Bellhouse, Sydney M. Pugh, Maxwell R. Derrick