Patents by Inventor Sheila H. DeWitt

Sheila H. DeWitt 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).

  • Multiple fluid sample processor and system
    Patent number: 6485690
    Abstract: Multiple fluid sample processors and systems for high throughput chemical synthesis and biological assays and/or processing. A multi-layered fluidic array having microchannels, reservoirs and reaction wells is subject to robotic and automated handling. A pressure pumping system is utilized for fluid delivery and control through the synthesis process. The sizes of the micro-sized channels, apertures, and valves are adjusted to optimize fluid distribution and channel filling. The fluid sample processors can be grouped together in a microtiter format to increase the speed, quantity and efficiency of the processing.
    Type: Grant
    Filed: May 27, 1999
    Date of Patent: November 26, 2002
    Assignee: Orchid BioSciences, Inc.
    Inventors: Dale R. Pfost, Sheila H. DeWitt, Chao Lin, Rolf E. Swenson, Robert D. Juncosa, Gary J. Schnerr, Sheldon M. Kugelmass
  • Methods and apparatus for liquid phase separation
    Patent number: 6183645
    Abstract: An apparatus and method for phase separation of two materials is disclosed. The two materials to be separated are positioned in an extraction cartridge and passed through a filter device, the filter device includes a filter disk member positioned adjacent at least one and preferably two frit members. A drying cartridge may be used to dry the separated liquid material after it leaves the extraction cartridge. The invention can be used for reaction workup, quenching, product isolation and purification.
    Type: Grant
    Filed: November 19, 1998
    Date of Patent: February 6, 2001
    Inventor: Sheila H. DeWitt
  • Phase separation filter device
    Patent number: 5874004
    Abstract: An apparatus and method for phase separation of two materials is disclosed. The two materials to be separated are positioned in an extraction cartridge and passed through a filter device, the filter device includes a filter disk member positioned adjacent at least one and preferably two frit members. A drying cartridge may be used to dry the separated liquid material after it leaves the extraction cartridge. The invention can be used for reaction workup, quenching, product isolation and purification.
    Type: Grant
    Filed: June 19, 1996
    Date of Patent: February 23, 1999
    Assignee: Sheila H. DeWitt
    Inventor: Sheila H. DeWitt