Patents by Inventor Yan-Yeung Luk

Yan-Yeung Luk 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).

  • Patent number: 7303694
    Abstract: Liquid crystal compositions that exhibit little or no toxicity with respect to cells include liquid crystals with chemical functional groups such as fluorine atoms, fluorophenyl groups, or difluorophenyl groups. Liquid crystals with little or no toxicity to cell lines may be added to cell culture media or added to components used in cell culture media. Cells may be grown in cell culture media that includes liquid crystals that exhibit little or no toxicity to cells.
    Type: Grant
    Filed: July 16, 2004
    Date of Patent: December 4, 2007
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Christopher John Murphy, Nicholas L. Abbott, Yan-Yeung Luk, Sean Francis Campbell, Li-Lin Cheng, Chang-Hyun Jang
  • Patent number: 6972196
    Abstract: Alkanethiols of formula (1) and the enantiomers of the alkanethiol of formula (1): HS-L-Q-T??(1), and disulfides of formula (3) and the enantiomers of the disulfide of formula (3): T-Q-L S-S-J??(3), where -T is a moiety of formula (2) R1 and R2 are each individually selected from the group consisting of H and OH; a is 0 to 3; b is 0 to 3; and indicates that the chirality of the carbon atom to which it is attached is either R or S; may form inert surfaces that prevent the unwanted adsorption of proteins and cells.
    Type: Grant
    Filed: October 11, 2000
    Date of Patent: December 6, 2005
    Assignee: Arch Development Corporation
    Inventors: Milan Mrksich, Yan-Yeung Luk
  • Publication number: 20050255582
    Abstract: Alkanethiols of formula (1) and the enantimomers of the alkanethiol of formula (1): HS-L-Q-T??(1), and disulfides of formula (3) and the enantimomers of the disulfide of formula (3): T-Q-L-S—S-J??(3), where -T is a moiety of formula (2) R1 and R2 are each individually selected from the group consisting of H and OH; a is 0 to 3; b is 0 to 3; and indicates that the chirality of the carbon atom to which it is attached is either R or S; may form inert surfaces that prevent the unwanted adsorption of proteins and cells.
    Type: Application
    Filed: May 6, 2005
    Publication date: November 17, 2005
    Inventors: Milan Mrksich, Yan-Yeung Luk
  • Publication number: 20050079487
    Abstract: Liquid crystal compositions that exhibit little or no toxicity with respect to cells include liquid crystals with chemical functional groups such as fluorine atoms, fluorophenyl groups, or difluorophenyl groups. Liquid crystals with little or no toxicity to cell lines may be added to cell culture media or added to components used in cell culture media. Cells may be grown in cell culture media that includes liquid crystals that exhibit little or no toxicity to cells.
    Type: Application
    Filed: July 16, 2004
    Publication date: April 14, 2005
    Inventors: Christopher Murphy, Nicholas Abbott, Yan-Yeung Luk, Sean Campbell, Li-Lin Cheng, Chang-Hyun Jang
  • Patent number: 6849321
    Abstract: A method for preparing a metallized surface that possesses gradients in surface topography includes obliquely depositing a metal from a metal source onto a surface of a support. The surface of the support includes a first end, a second end, and a region between the first and second ends. The second end of the surface is located nearer to the metal source than is the first end, and the metal is deposited onto the first end of the surface at a first angle of incidence and the metal is deposited onto the second end of the surface at a second angle of incidence. The first angle of incidence is greater than the second angle of incidence, and the metal is deposited onto the region between the first and second ends at angles of incidence that vary over the region to produce the metallized surface with gradients in surface topography. The angles of incidence are measured from the normal of the support.
    Type: Grant
    Filed: November 12, 2002
    Date of Patent: February 1, 2005
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Nicholas L. Abbott, Yan-Yeung Luk, Matthew Lee Tingey
  • Patent number: 6824837
    Abstract: The invention provides liquid crystal switching devices, liquid crystal cells made from the switching devices, and electrooptical cells made from the switching devices. The invention further provides methods for methods for changing the orientation of a liquid crystal in a liquid crystal switching device. The liquid crystal switching devices are constructed from a redox-active material supported by a substrate and a liquid crystal having a salt dispersed therein disposed atop the redox-active material.
    Type: Grant
    Filed: September 4, 2002
    Date of Patent: November 30, 2004
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Nicholas Lawrence Abbott, Yan-Yeung Luk
  • Publication number: 20040091620
    Abstract: A method for preparing a metallized surface that possesses gradients in surface topography includes obliquely depositing a metal from a metal source onto a surface of a support. The surface of the support includes a first end, a second end, and a region between the first and second ends. The second end of the surface is located nearer to the metal source than is the first end, and the metal is deposited onto the first end of the surface at a first angle of incidence and the metal is deposited onto the second end of the surface at a second angle of incidence. The first angle of incidence is greater than the second angle of incidence, and the metal is deposited onto the region between the first and second ends at angles of incidence that vary over the region to produce the metallized surface with gradients in surface topography. The angles of incidence are measured from the normal of the support.
    Type: Application
    Filed: November 12, 2002
    Publication date: May 13, 2004
    Applicant: Wisconsin Alumni Research Foundation
    Inventors: Nicholas L. Abbott, Yan-Yeung Luk, Matthew Lee Tingey
  • Publication number: 20030071949
    Abstract: The invention provides liquid crystal switching devices, liquid crystal cells made from the switching devices, and electrooptical cells made from the switching devices. The invention further provides methods for methods for changing the orientation of a liquid crystal in a liquid crystal switching device. The liquid crystal switching devices are constructed from a redox-active material supported by a substrate and a liquid crystal having a salt dispersed therein disposed atop the redox-active material.
    Type: Application
    Filed: September 4, 2002
    Publication date: April 17, 2003
    Applicant: Wisconsin Alumni Research Foundation
    Inventors: Nicholas Lawrence Abbott, Yan-Yeung Luk