Patents by Inventor David C. Hager

David C. Hager 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).

  • Multi-well apparatus
    Patent number: 6852290
    Abstract: A multi-well assembly according to one embodiment comprises a multi-well block and a guide plate. The multi-well block defines a plurality of wells, with each well having a fluid-impermeable bottom surface. The guide plate defines a plurality of fluid passageways corresponding to the wells of the multi-well block. The guide plate is configured such that, whenever the guide plate is registered with the multi-well block, fluid communication is established between each well and an associated fluid passageway.
    Type: Grant
    Filed: March 8, 2002
    Date of Patent: February 8, 2005
    Assignee: Exelixis, Inc.
    Inventors: David C. Hager, Jeffrey D. Donaldson, Patrick Kearney, Douglas O. Keller, James W. Leahy, Robert D. Mercer, Michael Morrissey, Troy M. Swartwood
  • Multi-well apparatus
    Publication number: 20020125197
    Abstract: A multi-well assembly according to one embodiment comprises a multi-well block and a guide plate. The multi-well block defines a plurality of wells, with each well having a fluid-impermeable bottom surface. The guide plate defines a plurality of fluid passageways corresponding to the wells of the multi-well block. The guide plate is configured such that, whenever the guide plate is registered with the multi-well block, fluid communication is established between each well and an associated fluid passageway.
    Type: Application
    Filed: March 8, 2002
    Publication date: September 12, 2002
    Inventors: David C. Hager, Jeffrey D. Donaldson, Patrick Kearney, Douglas O. Keller, James W. Leahy, Robert D. Mercer, Michael Morrissey, Troy M. Swartwood
  • Ion exchange treatment of extraction solvent to remove acid contaminants
    Patent number: 6217771
    Abstract: A method for removing corrosive contaminants from a polar extraction solvent comprises adding water to the solvent to provide a mixture. Then the mixture is contacted with a basic ion exchanger resin to remove the corrosive contaminants. The solvent is recovered and may be reused.
    Type: Grant
    Filed: October 15, 1999
    Date of Patent: April 17, 2001
    Assignee: Exxon Research and Engineering Company
    Inventors: Joseph P. Boyle, David C. Hager, Alan R. Katritzky