Patents by Inventor Pieter Ottens

Pieter Ottens 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).

  • Fluorescent magnesium indicators
    Patent number: 6706528
    Abstract: The present invention generally relates to analytical elements and methods for the selective determination of magnesium. In particular, the present invention is further directed to carboxy-quinolizine suitable for use as magnesium indicators, and more particularly, to 4-oxo-4H-quinolizine-3-carboxylic acid derivatives for use as novel fluorescent magnesium indicators.
    Type: Grant
    Filed: March 23, 2001
    Date of Patent: March 16, 2004
    Assignee: The United States of America as represented by the Department of Health and Human Services
    Inventors: Robert E. London, Pieter Otten, Louis A. Levy
  • Fluorescent magnesium indicators
    Publication number: 20020031834
    Abstract: The present invention generally relates to analytical elements and methods for the selective determination of magnesium. In particular, the present invention is further directed to carboxy-quinolizine suitable for use as magnesium indicators, and more particularly, to 4-oxo-4H-quinolizine-3-carboxylic acid derivatives for use as novel fluorescent magnesium indicators.
    Type: Application
    Filed: March 23, 2001
    Publication date: March 14, 2002
    Applicant: The Government of the United States
    Inventors: Robert E. London, Pieter Otten, Louis A. Levy
  • Apparatus for the purification of water contaminated with oil
    Patent number: 5980694
    Abstract: An installation for cleaning oil-polluted water, in particular at oil and gas production plants, is provided with a distillation column having a polluted water feed and at least one contact packing above which the outlet of the polluted water feed is located, a vapor discharge, a clean water outlet and a measuring device for the analysis of the water from the clean water outlet.
    Type: Grant
    Filed: July 25, 1997
    Date of Patent: November 9, 1999
    Assignee: EMSYS Separation Technology B.V.
    Inventors: Adrianus P. Apeldoorn, Jachebus W. Bos, Johannes J. Dozy, Johannes J. Elling, Leonardus C. Gordijn, Pieter Ottens, Wayne S. Penny, Cornelis Spel, Aatje J. Spel-van der Linde, Tom M. Vader, Theodorus J. De Wit