Patents by Inventor Douwe Frankena

Douwe Frankena 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).

  • Bioreactor comprising a mixing chamber
    Patent number: 9233865
    Abstract: The invention relates to a bioreactor (1) comprising a reactor vessel (41) having a mixing chamber (3) separated by a partition (44) from a reaction chamber (2) located generally above the mixing chamber (3), the mixing chamber (3) having an inlet system (4) for influent or a mixture of influent and recycled material, wherein the inlet system (4) has an outlet opening (60-64) in the mixing chamber (3). In an embodiment the partition (44) has an opening (66) forming a connection between the mixing chamber (3) and the reaction chamber (2), wherein the outlet opening (60-64) of the inlet system (4) is directed at the opening in the partition. In an embodiment the mixing chamber (3) has a skeleton for reinforcing the mixing chamber.
    Type: Grant
    Filed: May 3, 2010
    Date of Patent: January 12, 2016
    Assignee: PAQUES I.P. B.V.
    Inventors: Douwe Frankena, Sjoerd Hubertus Jozef Vellinga
  • BIOREACTOR COMPRISING A MIXING CHAMBER
    Publication number: 20120115218
    Abstract: The invention relates to a bioreactor (1) comprising a reactor vessel (41) having a mixing chamber (3) separated by a partition (44) from a reaction chamber (2) located generally above the mixing chamber (3), the mixing chamber (3) having an inlet system (4) for influent or a mixture of influent and recycled material, wherein the inlet system (4) has an outlet opening (60-64) in the mixing chamber (3). In an embodiment the partition (44) has an opening (66) forming a connection between the mixing chamber (3) and the reaction chamber (2), wherein the outlet opening (60-64) of the inlet system (4) is directed at the opening in the partition. In an embodiment the mixing chamber (3) has a skeleton for reinforcing the mixing chamber.
    Type: Application
    Filed: May 3, 2010
    Publication date: May 10, 2012
    Applicant: PAQUES BIO SYSTEMS B.V.
    Inventors: Douwe Frankena, Sjoerd Hubertus Jozef Vellinga