Patents by Inventor Marcelo Roberto Filgueira

Marcelo Roberto Filgueira 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).

  • Valve and splitting system for multi-dimensional liquid analysis
    Patent number: 10429361
    Abstract: A multi-dimensional liquid analysis system includes a flow splitter for separating mobile phase outflow from a first dimension liquid analysis system into first and second liquid split outlet flows. Volumetric flow rate control of the split outlet flows is provided by a flow control pump which withdraws one of the split outlet flows from the flow splitter at a controlled withdrawal flow rate to define the other split outlet flow rate as the difference between the outflow rate from the first dimension system and the withdrawal flow rate. In this manner, accurate and consistent flow division can be accomplished, which is particularly useful for multi-dimensional liquid analysis.
    Type: Grant
    Filed: January 15, 2016
    Date of Patent: October 1, 2019
    Assignee: Regents of the University of Minnesota
    Inventors: Carl W. Sims, Peter W. Carr, Marcelo Roberto Filgueira, Klaus Witt
  • VALVE AND SPLITTING SYSTEM FOR MULTI-DIMENSIONAL LIQUID ANALYSIS
    Publication number: 20160131619
    Abstract: A multi-dimensional liquid analysis system includes a flow splitter for separating mobile phase outflow from a first dimension liquid analysis system into fist and second liquid split outlet flows. Volumetric flow rate control of the split outlet flows is provided by a flow control pump which withdraws one of the split outlet flows from the flow splitter at a controlled withdrawal flow rate to define the other split outlet flow rate as the difference between the outflow rate from the first dimension system and the withdrawal flow rate. In this manner, accurate and consistent flow division can be accomplished, which is particularly useful for multi-dimensional liquid analysis.
    Type: Application
    Filed: January 15, 2016
    Publication date: May 12, 2016
    Inventors: Carl W. Sims, Peter W. Carr, Marcelo Roberto Filgueira, Klaus Witt
  • Valve and splitting system for multi-dimensional liquid analysis
    Patent number: 9239319
    Abstract: A multi-dimensional liquid analysis system includes a flow splitter for separating mobile phase outflow from a first dimension liquid analysis system into first and second liquid split outlet flows. Volumetric flow rate control of the split outlet flows is provided by a flow control pump which withdraws one of the split outlet flows from the flow splitter at a controlled withdrawal flow rate to define the other split outlet flow rate as the difference between the outflow rate from the first dimension system and the withdrawal flow rate. In this manner, accurate and consistent flow division can be accomplished, which is particularly useful for multi-dimensional liquid analysis.
    Type: Grant
    Filed: March 16, 2012
    Date of Patent: January 19, 2016
    Assignee: Regents of the University of Minnesota
    Inventors: Carl W. Sims, Peter W. Carr, Marcelo Roberto Filgueira, Klaus Witt