Patents by Inventor Daniel B. Granzow, Jr.

Daniel B. Granzow, 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).

  • Patent number: 4167663
    Abstract: An apparatus for warming blood and other parental fluids as they are infused through a disposable flow system includes a pair of heating elements which heat the blood as it passes through a warming bag provided in the flow system. The heating elements are recurringly switched on and off with a duty cycle dependent on both the temperature of the blood at the output of the warming bag, and the temperature differential between the output and input of the bag to maintain the blood at a predetermined temperature independent of flow rate. A duty cycle alarm circuit senses current supplied to the heating elements and trips the main circuit breaker of the apparatus to terminate operation in the event current is continuously applied over a predetermined interval of time, and temperature range and door alarm circuits sound an alarm if the output temperature of the blood falls outside of a predetermined range or if the operator attempts to remove the warming bag from the apparatus while the apparatus is in operation.
    Type: Grant
    Filed: January 24, 1977
    Date of Patent: September 11, 1979
    Assignee: Baxter Travenol Laboratories, Inc.
    Inventors: Daniel B. Granzow, Jr., Robert J. Froehlich
  • Patent number: 4098123
    Abstract: An apparatus for warming blood and other parental fluids as they are infused through a disposable flow system includes a pair of heating plates which heat the blood as it passes through a warming bag provided in the flow system. One of the heating plates comprises the inside surface of a door pivotally mounted to the apparatus housing, and the other heating plate comprises the underlying surface of the housing so as to form in conjunction with the first plate a user accessable heating chamber for receiving the warming bag. A wedge-shaped temperature-conductive thermometer block having a temperature insulating layer along one surface thereof fits between the heating plates and receives a thermometer to enable the temperature of each heating plate to be independently measured.
    Type: Grant
    Filed: January 24, 1977
    Date of Patent: July 4, 1978
    Assignee: Baxter Travenol Laboratories, Inc.
    Inventor: Daniel B. Granzow, Jr.
  • Patent number: D250045
    Type: Grant
    Filed: January 24, 1977
    Date of Patent: October 24, 1978
    Inventors: Daniel B. Granzow, Jr., Robert J. Froehlich