Patents by Inventor Johann M. Kreutzer

Johann M. Kreutzer 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: 6391102
    Abstract: A filtration system for trapping airborne contaminants as exemplified in evacuating smoke generated during a surgical procedure wherein operation efficiency thereof is automatically reported in relation to filter structure cumulative use time and cumulative airflow volume. In a first embodiment a system processor correlates cumulative vacuum pump motor speed, operation duration, and air pressure difference measurements over an airflow filter path into a cumulative value and automatically compares that value to a plurality of known pre-determined correlated values to thereby provide filter life expectancy which is conveyed to a memory device of the filter structure for retention and. conveyance for display. In a second embodiment a self-contained microprocessor and memory device of the filter structure is in communication with the system processor to receive, store, and send filter structure time-duration operability data which is sent to a data display site for display.
    Type: Grant
    Filed: March 21, 2000
    Date of Patent: May 21, 2002
    Assignee: Stackhouse, Inc.
    Inventors: Steven A. Bodden, Johann M. Kreutzer