Patents by Inventor Derek T. Yegian

Derek T. Yegian 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).

  • Method for diffracting crystals formed by submicroliter crystallization experiments
    Publication number: 20020155504
    Abstract: A method is provided for performing array microcrystallizations to determine suitable crystallization conditions for a molecule, the method comprising: forming an array of microcrystallizations, each microcrystallization comprising a drop comprising a mother liquor solution whose composition varies within the array and a molecule to be crystallized, the drop having a volume of less than 1 microliter; storing the array of microcrystallizations under conditions suitable for molecule crystals to form in the drops in the array; and detecting molecule crystal formation in the drops by taking images of the drops.
    Type: Application
    Filed: April 8, 2002
    Publication date: October 24, 2002
    Inventors: Bernard D. Santarsiero, Raymond C. Stevens, Peter G. Schultz, Joseph M. Jaklevic, Derek T. Yegian, Earl W. Cornell, Robert A. Nordmeyer
  • Mother liquor fluid delivery apparatus
    Publication number: 20020143153
    Abstract: A method is provided for performing array microcrystallizations to determine suitable crystallization conditions for a molecule, the method comprising: forming an array of microcrystallizations, each microcrystallization comprising a drop comprising a mother liquor solution whose composition varies within the array and a molecule to be crystallized, the drop having a volume of less than 1 microliter; storing the array of microcrystallizations under conditions suitable for molecule crystals to form in the drops in the array; and detecting molecule crystal formation in the drops by taking images of the drops.
    Type: Application
    Filed: April 8, 2002
    Publication date: October 3, 2002
    Inventors: Bernard D. Santarsiero, Raymond C. Stevens, Peter G. Schultz, Joseph M. Jaklevic, Derek T. Yegian, Earl W. Cornell, Robert A. Nordmeyer
  • Method for screening microcrystallizations for crystal formation
    Publication number: 20020110816
    Abstract: A method is provided for performing array microcrystallizations to determine suitable crystallization conditions for a molecule, the method comprising: forming an array of microcrystallizations, each microcrystallization comprising a drop comprising a mother liquor solution whose composition varies within the array and a molecule to be crystallized, the drop having a volume of less than 1 microliter; storing the array of microcrystallizations under conditions suitable for molecule crystals to form in the drops in the array; and detecting molecule crystal formation in the drops by taking images of the drops.
    Type: Application
    Filed: May 7, 2001
    Publication date: August 15, 2002
    Inventors: Bernard D. Santarsiero, Raymond C. Stevens, Peter G. Schultz, Joseph M. Jaklevic, Derek T. Yegian, Earl W. Cornell, Robert A. Nordmeyer
  • Methods and apparatus for performing array microcrystallizations
    Patent number: 6296673
    Abstract: A method is provided for performing array microcrystallizations to determine suitable crystallization conditions for a molecule. The method comprises forming an array of microcrystallizations, each microcrystallization comprising a drop containing a molecule to be crystallized, the drop having a volume of less than 1 &mgr;L; storing the array of microcrystallizations under conditions suitable for molecule crystals to form in the drops in the array; and detecting molecule crystal formation in the drops.
    Type: Grant
    Filed: June 18, 1999
    Date of Patent: October 2, 2001
    Assignee: The Regents of the University of California
    Inventors: Bernard D. Santarsiero, Raymond C. Stevens, Peter G. Shultz, Joseph M. Jaklevic, Derek T. Yegian, Earl Cornell, Robert A. Nordmeyer, Jian Jin, William F. Kolbe, Arthur L. Jones, Donald C. Uber
  • Mechanical swirler for a low-NO.sub.x, weak-swirl burner
    Patent number: 5879148
    Abstract: Disclosed is a mechanical swirler for generating diverging flow in lean premixed fuel burners. The swirler of the present invention includes a central passage with an entrance for accepting a feed gas, a flow balancing insert that introduces additional pressure drop beyond that occurring in the central passage in the absence of the flow balancing insert, and an exit aligned to direct the feed gas into a combustor. The swirler also has an annular passage about the central passage and including one or more vanes oriented to impart angular momentum to feed gas exiting the annular passage. The diverging flow generated by the swirler stabilizes lean combustion thus allowing for lower production of pollutants, particularly oxides of nitrogen.
    Type: Grant
    Filed: April 16, 1997
    Date of Patent: March 9, 1999
    Assignee: The Regents of the University of California
    Inventors: Robert K. Cheng, Derek T. Yegian