Patents by Inventor Cornelis Gerardus Josephus Koopal

Cornelis Gerardus Josephus Koopal 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).

  • pH-sensor
    Patent number: 10222339
    Abstract: The present invention relates to an optical H+-sensor, comprising an H+-indicator material, wherein the H+-indicator material is present between a support material and a H+-permeable layered structure, the layered structure comprising an H+-permeable hydrophilic layer and an H+-permeable cation exchange layer. Further, the invention relates to a method for determining the H+-concentration, e.g. expressed as pH, in a product or sample thereof, the method comprising contacting the product or sample with an optical H+-sensor according to the invention, measuring an optical property of the indicator material, and determining the H+-concentration of the product or sample based on said optical property.
    Type: Grant
    Filed: March 28, 2012
    Date of Patent: March 5, 2019
    Assignee: NEDERLANDSE ORGANISATIE VOOR TOEGEPAST-NATUURWETENSCHAPPELIJK ONDERZOEK TNO
    Inventors: Jacobus Johannes Frederik van Veen, Cornelis Gerardus Josephus Koopal
  • PH-SENSOR
    Publication number: 20140186962
    Abstract: The present invention relates to an optical H+-sensor, comprising an H+-indicator material, wherein the H+-indicator material is present between a support material and a H+-permeable layered structure, the layered structure comprising an H+-permeable hydrophilic layer and an H+-permeable cation exchange layer. Further, the invention relates to a method for determining the H+-concentration, e.g. expressed as pH, in a product or sample thereof, the method comprising contacting the product or sample with an optical H+-sensor according to the invention, measuring an optical property of the indicator material, and determining the H+-concentration of the product or sample based on said optical property.
    Type: Application
    Filed: March 28, 2012
    Publication date: July 3, 2014
    Applicant: Nederlandse Organisatie voor toegepast- natuurwetenschappelijk onderzoek TNO
    Inventors: Jacobus Johannes Frederik van Veen, Cornelis Gerardus Josephus Koopal