Patents Represented by Attorney, Agent or Law Firm Don D. Cha
  • Patent number: 7717364
    Abstract: An apparatus to separate components of a solid feedstock is described. The apparatus may include a threaded shaft that has a plurality of reaction zone segments along the length of the shaft that are separated from each other by dynamic plug segments. The threads of the shaft have a first thread pitch in the reaction zone segments, and a second thread pitch in the dynamic plug segments. The apparatus may also include a motor to rotate the shaft, and an outlet coupled to a second end of the shaft, where one or more solid components of the solid feedstock exit the apparatus through the outlet. The apparatus may additionally include a feeder to supply the solid feedstock to the threaded shaft, and a pump to provide a rinse fluid to the threaded shaft, where the rinse fluid flows in the opposite direction of the solid feedstock along the shaft.
    Type: Grant
    Filed: May 15, 2008
    Date of Patent: May 18, 2010
    Assignee: Purevision Technology, Inc.
    Inventor: Richard C. Wingerson
  • Patent number: 6696566
    Abstract: The present invention provides compounds of the Formula I and II: wherein R1, R3, W, Z, X1, X2, Ar1, R8 and R9 are as defined herein, and methods and intermediates for their preparation and uses thereof.
    Type: Grant
    Filed: February 11, 2002
    Date of Patent: February 24, 2004
    Assignee: Syntex (U.S.A.) LLC
    Inventors: Jian Jeffrey Chen, James Patrick Dunn, David Michael Goldstein, Christoph Martin Stahl
  • Patent number: 6238929
    Abstract: The invention provides systems and methods for synthesizing various compounds on solid support. According to one exemplary method, a synthesizer is provided having at least one reaction vessel block with a plurality of reaction vessels therein. At least one solid support is introduced into a least some of the reaction vessels, and a reagent is introduced into the reaction vessels having the solid supports. The reaction vessel block is then vibrated while heat is supplied to the reaction vessel block to heat the reaction vessels. Optionally, the synthesized compounds may be cleaved from the solid supports following synthesis while they remain within the reaction vessels.
    Type: Grant
    Filed: November 30, 1998
    Date of Patent: May 29, 2001
    Assignee: Glaxo Group Limited
    Inventors: Valery V. Antonenko, Nicolay Kulikov