Patents by Inventor Robbert-Jan Hermsen

Robbert-Jan Hermsen 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: 9861718
    Abstract: A method and system for determining steam sterilant quality of a steam sterilizer where the steam sterilant comprises non-condensable gas(es).
    Type: Grant
    Filed: September 16, 2013
    Date of Patent: January 9, 2018
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Knut Schumacher, Robbert-Jan Hermsen
  • Patent number: 9687578
    Abstract: Sterilant challenge device for use in steam sterilizers are described, including devices suitable for determining the efficacy of the non-condensable gas removal stage of a sterilization cycle and/or the quality of steam sterilant in relation to its content of non-condensable gas(es) are disclosed. Sterilant challenge devices having a metal tube having a defining a free space which is open at one end for the entry of sterilant and closed at the other end and at least one thermal load located around the tube are also described.
    Type: Grant
    Filed: September 18, 2013
    Date of Patent: June 27, 2017
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Knut Schumacher, Robbert-Jan Hermsen, Anton Kuepper
  • Patent number: 9523614
    Abstract: Devices for determining sterilization conditions within a sterilization chamber are described. Such devices include an elongate tube to be placed within said sterilization chamber and at least two temperature sensors within the cavity of the elongate tube. The at least two temperature sensors are spaced apart from each other along the length of the elongate tube by a predetermined distance and spaced apart from the interior wall of the elongate tube. Methods for determining sterilization discussed.
    Type: Grant
    Filed: September 16, 2011
    Date of Patent: December 20, 2016
    Inventors: Robbert-Jan Hermsen, Knut Schumacher
  • Publication number: 20150231294
    Abstract: Sterilant challenge device for use in steam sterilizers are described, including devices suitable for determining the efficacy of the non-condensable gas removal stage of a sterilization cycle andor the quality of steam sterilant in relation to its content of non-condensable gas(es) are disclosed. Sterilant challenge devices having a metal tube having a defining a free space which is open at one end for the entry of sterilant and closed at the other end and at least one thermal load located around the tube are also described.
    Type: Application
    Filed: September 18, 2013
    Publication date: August 20, 2015
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Knut Schumacher, Robbert-Jan Hermsen, Anton Kuepper
  • Publication number: 20150224216
    Abstract: A method and system for determining steam sterilant quality of a steam sterilizer where the steam sterilant comprises non-condensable gas(es).
    Type: Application
    Filed: September 16, 2013
    Publication date: August 13, 2015
    Inventors: Knut Schumacher, Robbert-Jan Hermsen
  • Publication number: 20130177042
    Abstract: Devices for determining sterilization conditions within a sterilization chamber are described. Such devices include an elongate tube to be placed within said sterilization chamber and at least two temperature sensors within the cavity of the elongate tube. The at least two temperature sensors are spaced apart from each other along the length of the elongate tube by a predetermined distance and spaced apart from the interior wall of the elongate tube. Methods for determining sterilization discussed.
    Type: Application
    Filed: September 16, 2011
    Publication date: July 11, 2013
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Robbert-Jan Hermsen, Knut Schumacher
  • Patent number: 6630352
    Abstract: A sterilant challenge device (1), for use in testing the efficiency of the air removal stage of a sterilization cycle in a sterilizer, includes a tube (2) of thermally-insulating material, the bore of which is closed at one end (3) and open at the other for the entry of sterilant. A plurality of thermally-conductive masses (4) is located around the tube (2) and thermally-separated from one another by air gaps (14), and a temperature sensor is located in an opening (16) in one of the masses adjacent the closed end of the tube. An outer casing (5) defines an air space around the thermally-conductive masses and thermally insulates the masses from the heat in the sterilizer.
    Type: Grant
    Filed: March 28, 2001
    Date of Patent: October 7, 2003
    Assignee: 3M Innovative Properties Company
    Inventors: Hackler Reiner, Robbert-Jan Hermsen, Wolfgang Kaps