Patents by Inventor Lee Cheng

Lee Cheng 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).

  • Publication number: 20020083414
    Abstract: A method for inserting a command by displaying existing commands in a command structure, receiving an indication to insert the command relative to the existing commands and inserting the command into the command structure. A system, comprising a command graphical user interface, to display commands in a command structure and a command node editor to edit commands displayed in the command structure, wherein commands to be edited are selected on the command graphical user interface and edits are saved in the edited commands.
    Type: Application
    Filed: March 1, 2001
    Publication date: June 27, 2002
    Inventors: Lee Cheng, Shawn-lin Dzeng
  • Patent number: 6398187
    Abstract: A jack comprises a frame, a base including an end pivotally mounted to the frame and an engaging portion, an elevating member securely attached to the other end of the base, and a cylinder device including an end pivotally connected to the frame. The cylinder device includes a cylinder and a piston rod having a first end slidably received in the cylinder and a second end beyond the cylinder. The second end of the piston rod is connected to the base to move therewith. When an end of an operative rod is engaged with the engaging portion of the base, the elevating member is quickly elevated when another end of the operative rod is applied with a force. When the operative rod is engaged with the cylinder device, the elevating member is elevated under manual operation on the operative rod.
    Type: Grant
    Filed: January 16, 2001
    Date of Patent: June 4, 2002
    Inventor: Lee-Cheng Chang
  • Publication number: 20020010908
    Abstract: A system including a code generation engine automatically generating software code for a handler function using one of handler function information and parameter information. A method including receiving parameter information via a graphical user interface, receiving handler function information via a graphical user interface and automatically generating handler function code using the parameter information and handler function information.
    Type: Application
    Filed: March 1, 2001
    Publication date: January 24, 2002
    Inventors: Lee Cheng, Shawn-Lin Dzeng
  • Patent number: 6168941
    Abstract: The present invention provides a method of producing an adenoviral vector stock by providing a culture of cells permissive for growth of adenoviral vectors, wherein the cells are in a medium, culturing the culture under conditions to permit growth of the cells, perfusing fresh medium through the culture for a period of about 1-6 hours, in an amount of at least about two times the volume of medium in the culture, while the density of the cells in the medium is about 40-70% of the density of cells obtained in the medium when the growth of the culture is in the stationary phase, contacting the culture with adenoviral vectors under conditions permissive for the infection of the cells after the perfusion of fresh medium is substantially completed, culturing the infected cells to replicate the adenoviral vectors, and harvesting the infected cells to obtain an adenoviral vector stock.
    Type: Grant
    Filed: April 7, 2000
    Date of Patent: January 2, 2001
    Assignee: GenVec, Inc.
    Inventors: Lee-Cheng Liu, Shoupeng Lai
  • Patent number: 5891713
    Abstract: The invention relates to the safe and effective biotreatment of circulating fluids. In one general aspect of the invention, an apparatus (e.g., liver assist system) for circulating and bioprocessing a fluid (e.g., plasma) includes a conduit for circulating the fluid, an oxygenator for supplying oxygen to the fluid, a pump adapted to circulate the fluid through the conduit, a bioreactor unit, connected within the conduit, adapted to process the fluid, and a container connected within the conduit for receiving and releasing a portion of the fluid.
    Type: Grant
    Filed: June 6, 1997
    Date of Patent: April 6, 1999
    Assignee: W.R. Grace & Co.
    Inventors: Lee-Cheng Liu, Timothy J. Perlman, Catherine A. Doyle
  • Patent number: 5653669
    Abstract: A universal gym includes a frame assembly, a resistance assembly, a lever-type strain gauge, and a plurality of exercising assemblies the resultant resistances of which are identical under proper arrangement of a plurality of movable pulleys and fixed pulleys.
    Type: Grant
    Filed: January 22, 1996
    Date of Patent: August 5, 1997
    Inventor: Chang Lee Cheng
  • Patent number: 5643794
    Abstract: The invention relates to the safe and effective biotreatment of circulating fluids. In one general aspect of the invention, an apparatus (e.g., liver assist system) for circulating and bioprocessing a fluid (e.g., plasma) includes a conduit for circulating the fluid, an oxygenator for supplying oxygen to the fluid, a pump adapted to circulate the fluid through the conduit, a bioreactor unit, connected within the conduit, adapted to process the fluid, and a container connected within the conduit for receiving and releasing a portion of the fluid.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: July 1, 1997
    Assignee: W.R. Grace & Co.-Conn.
    Inventors: Lee-Cheng Liu, Timothy J. Perlman, Catherine A. Doyle
  • Patent number: 5326276
    Abstract: A connector assembly for use with a unitary daughter board having different contact pitch arrangements on the lower edge portion, includes two different contact pitch arrangement connectors lengthwise aligned and juxtaposed with each other for commonly receiving the lower edge portion of the daughter board. The connector of the high density contact arrangement includes an outer end wall having a recess at the top for functioning as a pivoting point of the rotative movement of the daughter board without interference thereof. A middle partition wall of the same connector has the curved surface thereof in conformity with the rotation path of the daughter board.
    Type: Grant
    Filed: March 3, 1993
    Date of Patent: July 5, 1994
    Assignee: Foxconn International, Inc.
    Inventor: Lee Cheng
  • Patent number: 4857163
    Abstract: A novel agarose gel is provided for use in the high resolution electrophoretic (HRE) separation of serum proteins. The agarose gel employs a novel gel buffer which contains either hippurate, glycine, or a mixture thereof, in combination with barbital and Tris. The agarose gel of the present invention yields improved electrophoretic separation of the serum proteins in a sample whether the same gel buffer is also used as the running buffer or whether a standard barbital running buffer is used.
    Type: Grant
    Filed: July 17, 1987
    Date of Patent: August 15, 1989
    Assignee: Beckman Instruments, Inc.
    Inventors: William A. Gurske, Cynthia R. Blessum, Min-Lee Cheng, Mark S. Andrade
  • Patent number: D449915
    Type: Grant
    Filed: January 16, 2001
    Date of Patent: October 30, 2001
    Inventor: Lee-Cheng Chang
  • Patent number: D453941
    Type: Grant
    Filed: April 12, 2001
    Date of Patent: February 26, 2002
    Inventor: Lee-Cheng Chang
  • Patent number: D433062
    Type: Grant
    Filed: September 13, 1999
    Date of Patent: October 31, 2000
    Assignee: Waltjun Industrial, Inc.
    Inventor: Lee Cheng Ho