Patents by Inventor Henricus L. F. M. Spanjers

Henricus L. F. M. Spanjers 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).

  • Method for determining the respiration rate of a respiring material in the form of a continuous process current, as well as a device suitable for such an application
    Patent number: 5017496
    Abstract: Method and device for determining the respiration rate of a respiring material such as active sludge in a continuous process flow before and after holding thereof in a respiration chamber. The oxygen content in the continuous process current is done at a single measurement point. This is done by reversing the incoming and outgoing current of the respiration chamber. Preferably the process flow consists of a mixture of respiring material and waste water to be biologically purified.
    Type: Grant
    Filed: October 15, 1987
    Date of Patent: May 21, 1991
    Assignee: Ecotechniek B.V.
    Inventors: Abraham Klapwijk, Henricus L. F. M. Spanjers