Patents by Inventor Robert J. Froehlich

Robert J. Froehlich 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: 10286168
    Abstract: An improvement for existing breathing therapy machines which allows the machine to determine a patient's dominant respiratory phenotype using an auto-titration mode and flow sensor.
    Type: Grant
    Filed: July 17, 2014
    Date of Patent: May 14, 2019
    Assignee: DEVILBISS HEALTHCARE LLC
    Inventors: Michael B. Knepper, James P. Froehlich, Robert Joseph Thomas, Joseph J. Boring
  • Patent number: 4245906
    Abstract: A system for optically combining two images that may be photographed with a camera as a single image. The system is specifically adapted to generate slides in which lettering or graphic designs may be superimposed over various background patterns.
    Type: Grant
    Filed: November 13, 1979
    Date of Patent: January 20, 1981
    Inventor: Robert J. Froehlich
  • 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: 4007367
    Abstract: This invention relates to an apparatus for thawing frozen semen for use in artificial insemination of animals. More particularly, the system relates to an apparatus for thawing semen while retaining maximum cell yield by minimizing loss of semen activity.
    Type: Grant
    Filed: February 2, 1976
    Date of Patent: February 8, 1977
    Inventors: Robert K. Rusteberg, Robert J. Froehlich
  • Patent number: D250045
    Type: Grant
    Filed: January 24, 1977
    Date of Patent: October 24, 1978
    Inventors: Daniel B. Granzow, Jr., Robert J. Froehlich