Patents by Inventor Jonathan Servaites

Jonathan Servaites 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).

  • BIOFILMS IN BIOELECTROCHEMICAL ENERGY CONVERSION CELLS
    Publication number: 20220388879
    Abstract: Presented herein is a voltaic cell containing a biofilm for facilitating energy conversion in a bioelectrochemical energy conversion cell where the biofilm includes one or more microbial populations.
    Type: Application
    Filed: June 6, 2022
    Publication date: December 8, 2022
    Inventors: Emily A. Stein, Jonathan Servaites, Keaton Washburn, Justin Azar
  • Catalyst ink, process for making catalyst ink and for preparing catalyst coated membranes
    Publication number: 20060110631
    Abstract: The invention relates to catalyst inks used in the formation of catalyst coated membranes used in fuel cells.
    Type: Application
    Filed: February 18, 2005
    Publication date: May 25, 2006
    Inventors: David Olmeijer, Christopher Castledine, Jonathan Servaites, Douglas Diez
  • Printing of catalyst on the membrane of fuel cells
    Publication number: 20030148159
    Abstract: A method of applying catalytic materials on the membrane of fuel cells using gravure process is provided. In accordance with the method, a catalyst ink comprising catalyst agglomerates with controlled particle size and porosity is formed. The catalyst ink is then applied onto a membrane surface using gravure process to form a catalyst layer having a plurality of three dimensional structural units substantially vertical to the membrane surface.
    Type: Application
    Filed: December 19, 2002
    Publication date: August 7, 2003
    Inventors: Philip Cox, Douglas Diez, Jonathan Servaites, David L. Olmeijer
  • Gas extraction device for extracting gas from a microfluidics system
    Patent number: 6398850
    Abstract: A thermally-activated gas extraction device that comprises a bubble capture chamber, an exhaust manifold, a tapered extraction chamber and an extraction heater associated with the tapered extraction chamber. The tapered extraction chamber extends from the bubble capture chamber towards the exhaust manifold and has a cross-sectional area that increases towards the exhaust manifold. A gas removal method in which the gas extraction device is provided, a bubble of gas is accumulated in the bubble capture chamber, a portion of the liquid in the tapered extraction chamber heated to nucleate a bubble of vapor, and the bubble of vapor is heated to explosively expand the bubble of vapor into contact with the walls of the tapered extraction chamber and into contact with the bubble of gas to form a composite bubble. Contact with the walls of the tapered extraction moves the composite bubble towards the exhaust manifold.
    Type: Grant
    Filed: June 25, 2001
    Date of Patent: June 4, 2002
    Assignee: Hewlett-Packard Company
    Inventors: Leslie A. Field, David K. Donald, Phillip W. Barth, Jonathan Servaites, Storrs T. Hoen
  • GAS EXTRACTION DEVICE FOR EXTRACTING GAS FROM A MICROFLUIDICS SYSTEM
    Publication number: 20020062736
    Abstract: A thermally-activated gas extraction device that comprises a bubble capture chamber, an exhaust manifold, a tapered extraction chamber and an extraction heater associated with the tapered extraction chamber. The tapered extraction chamber extends from the bubble capture chamber towards the exhaust manifold and has a cross-sectional area that increases towards the exhaust manifold. A gas removal method in which the gas extraction device is provided, a bubble of gas is accumulated in the bubble capture chamber, a portion of the liquid in the tapered extraction chamber heated to nucleate a bubble of vapor, and the bubble of vapor is heated to explosively expand the bubble of vapor into contact with the walls of the tapered extraction chamber and into contact with the bubble of gas to form a composite bubble. Contact with the walls of the tapered extraction moves the composite bubble towards the exhaust manifold.
    Type: Application
    Filed: June 25, 2001
    Publication date: May 30, 2002
    Inventors: Leslie A. Field, David K. Donald, Phillip W. Barth, Jonathan Servaites, Storrs T. Hoen
  • Gas extraction device for extracting gas from a microfluidics system
    Patent number: 6299673
    Abstract: A thermally-activated gas extraction device that comprises a bubble capture chamber, an exhaust manifold, a tapered extraction chamber and an extraction heater associated with the tapered extraction chamber. The tapered extraction chamber extends from the bubble capture chamber towards the exhaust manifold and has a cross-sectional area that increases towards the exhaust manifold. A gas removal method in which the gas extraction device is provided, a bubble of gas is accumulated in the bubble capture chamber, a portion of the liquid in the tapered extraction chamber heated to nucleate a bubble of vapor, and the bubble of vapor is heated to explosively expand the bubble of vapor into contact with the walls of the tapered extraction chamber and into contact with the bubble of gas to form a composite bubble. Contact with the walls of the tapered extraction moves the composite bubble towards the exhaust manifold.
    Type: Grant
    Filed: December 23, 1998
    Date of Patent: October 9, 2001
    Assignee: Hewlett-Packard Company
    Inventors: Leslie A. Field, David K. Donald, Phillip W. Barth, Jonathan Servaites, Storrs T. Hoen, Jonah A. Harley