Patents by Inventor Richard A. Truesdell

Richard A. Truesdell 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).

  • Wavy interface mixer
    Patent number: 7416903
    Abstract: The present invention provides methods and apparatus for mixing samples in-line in a microfluidic system, comprising methods of and means for introducing a first fluid sample into a flow-tube at a first end at a first velocity via a first conduit; methods of and means for introducing a second fluid sample into the flow-tube at the first end at a second velocity, the second velocity different from the first velocity, via a second conduit, wherein the first fluid sample and the second fluid sample converge in the flow tube to form an interface; whereby the first fluid sample and the second fluid sample mix at the interface within the flow-tube, wherein fluid flow at the first end of the flow-tube is laminar and fluid flow at a second end of the flow-tube is laminar, and wherein the flow-tube has a constant diameter between the first end and the second end of the flow-tube.
    Type: Grant
    Filed: May 5, 2003
    Date of Patent: August 26, 2008
    Assignee: STC.UNM
    Inventors: Larry A. Sklar, Andrea A. Mammoli, Richard A. Truesdell, Peter V. Vorobieff
  • Wavy interface mixer
    Publication number: 20030207338
    Abstract: The present invention provides methods and apparatus for mixing samples in-line in a microfluidic system, comprising methods of and means for introducing a first fluid sample into a flow-tube at a first end at a first velocity via a first conduit; methods of and means for introducing a second fluid sample into the flow-tube at the first end at a second velocity, the second velocity different from the first velocity, via a second conduit, wherein the first fluid sample and the second fluid sample converge in the flow tube to form an interface; whereby the first fluid sample and the second fluid sample mix at the interface within the flow-tube, wherein fluid flow at the first end of the flow-tube is laminar and fluid flow at a second end of the flow-tube is laminar, and wherein the flow-tube has a constant diameter between the first end and the second end of the flow-tube.
    Type: Application
    Filed: May 5, 2003
    Publication date: November 6, 2003
    Inventors: Larry A. Sklar, Andrea A. Mammoli, Richard A. Truesdell, Peter V. Vorobieff