Patents by Inventor Joseph W. Carter

Joseph W. Carter 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).

  • Constant pressure gas cell
    Patent number: 5245405
    Abstract: A gas analysis cell having a pressure control system eliminates pressure variations in the gas cell regardless of changes in restriction, gas viscosity and barometric pressure. Since optical alignment through the gas cell is sensitive to gas pressure, maintaining a constant pressure in the gas cell makes the system more stable.
    Type: Grant
    Filed: July 31, 1992
    Date of Patent: September 14, 1993
    Assignee: BOC Health Care, Inc.
    Inventors: John R. Mitchell, Joseph W. Carter, Donald E. Gregonis