Patents by Inventor Stuart A. Oehrle

Stuart A. Oehrle 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).

  • Methods for the determining the presence or absence of cyanobacteria toxins
    Patent number: 9284592
    Abstract: Kits and methods for the detection of toxins produced by cyanobacteria are disclosed. The methods include preparing a sample that potentially includes cyanobacterial toxins on a solid phase extraction device. In some embodiments, the sample extract can be formed using a weak cationic exchange process and a weak anionic exchange process.
    Type: Grant
    Filed: October 28, 2009
    Date of Patent: March 15, 2016
    Assignee: Waters Technologies Corporation
    Inventor: Stuart A. Oehrle
  • Methods And Kits For The Determining The Presence Or Absence Of Cyanobacteria Toxins
    Publication number: 20110269241
    Abstract: Embodiments of the present invention are directed to kits and methods for the detection of toxins produced by cyanobacteria. The methods and kits feature sample preparation steps with weak cationic and anionic exchange resins and small particle analytical columns operating at 4,000 to 15,000 psi.
    Type: Application
    Filed: October 28, 2009
    Publication date: November 3, 2011
    Applicant: WATERS TECHNOLOGIES CORPORATION
    Inventor: Stuart A. Oehrle
  • Methods for separating and analyzing anionic compounds
    Patent number: 8048305
    Abstract: Systems, methods and compositions for the purification, separation and analysis of anionic compounds, including polyanionic compounds are disclosed.
    Type: Grant
    Filed: November 26, 2007
    Date of Patent: November 1, 2011
    Assignee: Waters Technologies Corporation
    Inventors: Ziling Lu, Diane Diehl, Jeffrey Mazzeo, Stuart A. Oehrle, Claude R. Mallet, Michael S. Young, Erin Chambers
  • Methods And Kits For The Determining The Presence Or Absence Of Ergot Alkaloids
    Publication number: 20110263029
    Abstract: The present invention is directed to methods and kits for the determining the presence or absence of ergot alkaloids in sample which use chromatographic instrumentation and columns operating at a pressure of 4,000 to 15,000 psi and columns with 1-3 micron particle size to produce results by mass spectroscopy in approximately four minutes.
    Type: Application
    Filed: October 16, 2009
    Publication date: October 27, 2011
    Applicant: WATERS TECHNOLOGIES CORPORATION
    Inventor: Stuart A. Oehrle
  • METHODS FOR SEPARATING AND ANALYZING ANIONIC COMPOUNDS
    Publication number: 20080169242
    Abstract: Systems, methods and compositions for the purification, separation and analysis of anionic compounds, including polyanionic compounds are disclosed.
    Type: Application
    Filed: November 26, 2007
    Publication date: July 17, 2008
    Applicant: WATERS INVESTMENTS LIMITED
    Inventors: Ziling Lu, Diane Diehl, Jeffrey Mazzeo, Stuart A. Oehrle, Claude R. Mallet, Michael S. Young, Erin Chambers