Patents by Inventor Rodney K. Hehenberger

Rodney K. Hehenberger 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).

  • Chemical indicator for determining the adequacy of a liquid sterilization process
    Patent number: 6534006
    Abstract: A sterilization indicator that presents a visually distinct and uniform color transition after having been passed through sterilizing conditions. This sterilization indicator has a base layer with an indicator compound applied to at least an indicating region thereon. It also has a raised lamina attached to the base layer so as to substantially surround the indicating region.
    Type: Grant
    Filed: August 30, 2001
    Date of Patent: March 18, 2003
    Assignee: 3M Innovative Properties Company
    Inventor: Rodney K. Hehenberger
  • Chemical indicator for determining the adequacy of a liquid sterilization process
    Publication number: 20020039792
    Abstract: A sterilization indicator that presents a visually distinct and uniform color transition after having been passed through sterilizing conditions. This sterilization indicator has a base layer with an indicator compound applied to at least an indicating region thereon. It also has a raised lamina attached to the base layer so as to substantially surround the indicating region.
    Type: Application
    Filed: August 30, 2001
    Publication date: April 4, 2002
    Inventor: Rodney K. Hehenberger
  • THIN BARRIER FILM FOR CONTAINMENT OF HALOGENATED AROMATIC COMPOUNDS IN A CHEMICAL THERMOMETER
    Publication number: 20020018512
    Abstract: A barrier for halogenated aromatic compounds is provided, especially fluorinated hydrocarbon films useful for containing precise quantities of halogenated aromatic compounds used as thermally sensitive materials in reversible chemical thermometers. A new shape of chemical thermometer is also disclosed.
    Type: Application
    Filed: July 1, 1998
    Publication date: February 14, 2002
    Applicant: 3M Innovative Properties Company
    Inventors: RODNEY K. HEHENBERGER, SARA L. MEGCHELSEN, RICHARD L. JACOBSON
  • Sterilization indicator for a hydrogen peroxide plasma sterilization process
    Patent number: D438980
    Type: Grant
    Filed: October 6, 1999
    Date of Patent: March 13, 2001
    Assignee: 3M Innovative Properties Company
    Inventor: Rodney K. Hehenberger
  • Sterilization indicator for sterilization process
    Patent number: D439344
    Type: Grant
    Filed: October 6, 1999
    Date of Patent: March 20, 2001
    Assignee: 3M Innovative Properties Company
    Inventor: Rodney K. Hehenberger
  • Liquid peracetic acid sterilization indicator
    Patent number: D456524
    Type: Grant
    Filed: March 24, 1998
    Date of Patent: April 30, 2002
    Assignee: 3M Innovative Properties Company
    Inventor: Rodney K. Hehenberger