Patents by Inventor Ken Chang

Ken Chang 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: 20090240037
    Abstract: Humanized, chimeric and human anti-CD20 antibodies and CD20 antibody fusion proteins that bind to a human B cell marker, referred to as CD20, which are useful for the treatment and diagnosis of B-cell disorders, such as B-cell malignancies and autoimmune diseases, and methods of treatment and diagnosis are disclosed. Methods of making the humanized, chimeric and human anti-CD20 antibodies are disclosed. A humanized anti-HSG (histamine-succinyl-glycyl) monoclonal antibody designated h679 which binds with high affinity to molecules containing the moiety histamine-succinyl-glycyl (HSG), and methods of making the humanized anti-HSG antibody also are disclosed.
    Type: Application
    Filed: October 13, 2008
    Publication date: September 24, 2009
    Applicant: Immunomedics, Inc.
    Inventors: Edmund ROSSI, Chien-Hsing Ken CHANG, David M. GOLDENBERG, Hans HANSEN
  • Publication number: 20090215768
    Abstract: An isoxazole derivative is provided. The isoxazole derivative has following formula: wherein R1, R2, R3, R4 and R5, independently, include hydrogen, hydroxy or C1-C12 alkoxy optionally substituted with oxirane, thiirane, aziridine, amino, cycloamino, aminohydroxy or cycloaminohydroxy. The invention also provides a pharmaceutical composition for treatment of osteoporosis and cancer including an isoxazole derivative or a pharmaceutically acceptable salt thereof and a pharmaceutically acceptable carrier.
    Type: Application
    Filed: October 1, 2008
    Publication date: August 27, 2009
    Inventors: Cherng-Chyi Tzeng, Yeh-Long Chen, Gwo-Jaw Wang, Mai-Ling Ho, Je-Ken Chang, Yin-Chih Fu
  • Publication number: 20090215767
    Abstract: An isoflavone derivative is provided. The isoxazole derivative has following formula: wherein R1 and R2, independently, include C1-C12 alkyl optionally substituted with oxirane, thiirane, aziridine, amino, cycloamino, aminohydroxy or cycloaminohydroxy, and R3 includes hydrogen, hydroxy or C1-C12 alkoxy optionally substituted with oxirane, thiirane, aziridine, amino, cycloamino, aminohydroxy or cycloaminohydroxy. The invention also provides a pharmaceutical composition for treatment of osteoporosis including an isoflavone derivative or a pharmaceutically acceptable salt thereof and a pharmaceutically acceptable carrier.
    Type: Application
    Filed: September 30, 2008
    Publication date: August 27, 2009
    Inventors: Cherng-Chyi TZENG, Yeh-Long Chen, Gwo-Jaw Wang, Mei-Ling Ho, Je-Ken Chang, Yin-Chih Fu
  • Publication number: 20090170177
    Abstract: Stem cell transfection method. The stem cell infection method of the invention comprises providing a stem cell; positioning the stem cell at a buffer, wherein the buffer contains a foreign material; electroporating the stem cell in the buffer; and culturing the stem cell.
    Type: Application
    Filed: April 21, 2008
    Publication date: July 2, 2009
    Applicant: KAOHSIUNG MEDICAL UNIVERSITY
    Inventors: Mei-Ling Ho, Gwo-Jaw Wang, Je-Ken Chang, Yan-Hsiung Wang
  • Publication number: 20090170200
    Abstract: A medium for culturing stem cell. The stem cell medium of the invention comprises a fetal bovine serum, one or plurality of amino acid, one or plurality of vitamin, one or plurality of growth factor, one or plurality of inorganic salt, one or plurality of antioxidant, wherein the stem cell medium has a calcium concentration of less than about 1.8 mM, and the fetal bovine serum is present in an amount of less than about 10% by volume of the medium. The stem cell medium of the invention can maintain the proliferative and self-renewal capacity of the stem cells and keep stem cells at a steady stage.
    Type: Application
    Filed: April 21, 2008
    Publication date: July 2, 2009
    Applicant: KAOHSIUNG MEDICAL UNIVERSITY
    Inventors: Ching-Hua Yeh, Gwo-Jaw Wang, Mei-Ling Ho, Je-Ken Chang, Chung-Hwan Chen
  • Publication number: 20090169658
    Abstract: Toona sinensis extract for suppressing the proliferation and inducing apoptosis of osteosarcoma, but not normal human osterblasts. The extraction process comprises: extracting Toona sinensis with water to obtain a first extract, and filtering the first extract by a membrane to obtain a filtrate, and the Toona sinensis extract of the invention does not cause biological damages of normal bone cells. In addition, the invention further provides a pharmaceutical composition comprising the Toona sinensis extract.
    Type: Application
    Filed: December 28, 2007
    Publication date: July 2, 2009
    Applicant: KAOHSIUNG MEDICAL UNIVERSITY
    Inventors: Mei-Ling Ho, Hseng-Kuang Hsu, Gwo-Jaw Wang, Je-Ken Chang
  • Patent number: 7544487
    Abstract: Recombinant immunotoxins containing a cytotoxic RNAse fused to an antibody or antibody fragment may be produced in mammalian cell culture. Surprisingly, immunotoxins containing a cytotoxic RNAse fused to the N-terminus of one antibody variable domain can be prepared and retain the ability to specifically bind antigen. The immunotoxins may be used in a variety of therapeutic methods for treating diseases or syndromes associated with unwanted or inappropriate cell proliferation or activation.
    Type: Grant
    Filed: February 14, 2005
    Date of Patent: June 9, 2009
    Assignee: Immunomedics, Inc.
    Inventors: David M. Goldenberg, Hans J. Hansen, Chien-Hsing Ken Chang, Sailaja S. Vanama, Edmund A. Rossi
  • Patent number: 7534431
    Abstract: Methods and compositions are described for targeting therapeutic and diagnostic molecules to particular types of cells using targeting antibodies or other targeting moeities.
    Type: Grant
    Filed: February 2, 2004
    Date of Patent: May 19, 2009
    Assignee: Immunomedics, Inc.
    Inventors: William J. McBride, Hans J. Hansen, Chien-Hsing Ken Chang, David M. Goldenberg
  • Publication number: 20090051826
    Abstract: A method for displaying pictures during a digital picture slide show includes receiving a plurality of pictures, determining display characteristics of the plurality of pictures according to weighting values of the plurality of pictures, and displaying the plurality of pictures according to the display characteristics of the plurality of pictures.
    Type: Application
    Filed: August 26, 2007
    Publication date: February 26, 2009
    Inventor: Pei-Ken Chang
  • Publication number: 20080220070
    Abstract: A controlled release system and manufacturing method thereof. The method comprises providing a first aqueous solution containing a hydrophilic drug and an alkaline agent, providing an organic solution containing a hydrophobic molecule, providing a second aqueous solution containing a hydrophilic surfactant, mixing the first hydrophilic solution with the organic solution to form a first emulsion, and mixing the first emulsion with a second aqueous solution to form a second emulsion containing delayed-release microsphere.
    Type: Application
    Filed: September 20, 2007
    Publication date: September 11, 2008
    Inventors: Yin-Chih Fu, Chih-Kuang Wang, Gwo-Jaw Wang, Mei-Ling Ho, Hui-Ting Chen, Jen-Ken Chang, Cherng-Chyi Tzeng
  • Patent number: 7345709
    Abstract: A method and an apparatus of displaying component video signals. Firstly, a component video signal is received, and a vertical synchronous signal and a horizontal synchronous signal are separated from the component video signal. Thereafter, the format of the component video signal is determined by analyzing the vertical synchronous signal and the horizontal synchronous signal, and a video processing route corresponding to the format of the component video signal is chosen to generate visual output from the component video signal. Thus the visual output is displayed.
    Type: Grant
    Filed: August 6, 2004
    Date of Patent: March 18, 2008
    Assignee: Delta Electronics, Inc.
    Inventors: Chien-Ken Chang, Chung-Yi Yang, Chun-Hao Lee, Bao-Kim Liu
  • Publication number: 20080026362
    Abstract: Disclosed herein is a three-dimensional culture containing human articular chondrocytes with induced terminal differentiation changes, as well as a process for preparing the same. The three-dimensional culture, which was found to mimic the biological characteristics of articular chondrocytes that undergo terminal differentiation in vivo, can be used as a tool in the studies of the molecular and cellular mechanisms of osteoarthritis, and in the screening of candidate drugs for use in treatment of a disorder associated with articular chondrocytes.
    Type: Application
    Filed: July 20, 2006
    Publication date: January 31, 2008
    Applicant: Kaohsiung Medical University
    Inventors: Mei-Ling Ho, Gwo-Jaw Wang, Je-Ken Chang
  • Publication number: 20070091279
    Abstract: A projection display apparatus and method of preventing from inadvertently inputting command thereof are provided for preventing users from inadvertently inputting the command to shut down a discharge lamp of the projection display apparatus. The method comprises the following steps: preparing to enter a determination mode when a projection display apparatus receives a activation signal; displaying the predetermined delay time on a screen of the projection display apparatus and down counting such delay time; determining whether a confirmation signal is received during the delay time; and shutting down the discharge lamp when the project display apparatus receives the confirmation signal. If the projection display apparatus fails to receive the confirmation signal or receive other signals during the delay time, the projection display apparatus will return to the normal display mode.
    Type: Application
    Filed: October 24, 2005
    Publication date: April 26, 2007
    Inventors: Chien-Ken Chang, Chun-Hao Lee, Jung-Yi Yang, Bao-Kim Liu
  • Publication number: 20060284860
    Abstract: A display device includes a driving unit and a processing unit. If the driving unit operates abnormally during a power-on period, the processing unit generates a control signal according to a driving signal outputted by the driving unit. In response to the control signal, the driving unit is reset and then re-outputs the driving signal. A method for recovering from abnormal power-on therefor includes generating two signals, wherein one signal is adapted for re-activating a light source and the other is adapted for resetting the driving unit so that the driving unit may re-output the driving signal.
    Type: Application
    Filed: September 27, 2005
    Publication date: December 21, 2006
    Inventors: Chien-Ken Chang, Jung-Yi Yang, Bao-Kim Liu
  • Patent number: 7088556
    Abstract: A disk drive includes a storage disk, a data transducer, an actuator assembly and a positioner. The actuator assembly supports the data transducer over the storage disk. The actuator assembly includes a rotatable actuator hub and a longitudinal axis. The positioner moves the actuator assembly to position the data transducer relative to the storage disk. During movement of the actuator assembly, the actuator hub is subject to a resultant force that causes track misregistration of the data transducer. The positioner includes a magnet assembly that generates a magnetic field, a first conductor region and a second conductor region. In one embodiment, the conductor regions cooperate with the magnet assembly to generate a first force and a second force that are each directed at an angle having an absolute value that is greater than zero degrees and less than approximately 45 degrees relative to the longitudinal axis of the actuator assembly.
    Type: Grant
    Filed: June 30, 2003
    Date of Patent: August 8, 2006
    Assignee: Maxtor Corporation
    Inventors: Yee-Chung Fu, Ken Chang, Ross Pace
  • Patent number: 7038886
    Abstract: A positioner (20) for a disk drive (10) that includes a magnet assembly (52), a conductor assembly (54), and a control system (22) is provided herein. The magnet assembly (52) includes a pair of magnet arrays (56A) (56B) and a pair of spaced apart flux return plates (75A) (75B). The conductor assembly (54) includes at least a first coil array (80) and a second coil array (82) that are substantially co-planar. The control system (22) directs current to electrically excite the coil arrays (80) (82) to maintain a data transducer (50) on a target track (32) of a storage disk (28).
    Type: Grant
    Filed: May 11, 2004
    Date of Patent: May 2, 2006
    Assignee: Maxtor Corporation
    Inventors: Ken Chang, Mike Mayo
  • Publication number: 20060007034
    Abstract: A composite radar absorption structure with a thin shell type and a method for manufacturing the same are provided. The composite radar absorption structure at lease comprising a continuous fibrous material and a plurality of filling mediums, wherein the plurality of filling mediums are uniformly distributed over the surface perpendicular to the thickness direction in the continuous fibrous material; and a volume percentage of the plurality of filling mediums are between 10 vol. % and 25 vol. % of the continuous fibrous material.
    Type: Application
    Filed: July 7, 2004
    Publication date: January 12, 2006
    Inventors: Wen-Jang Yen, Abel Yu, Ken-Chang Tien, Yuan-Chang Chang
  • Patent number: 6977980
    Abstract: Transmit parallel interfaces and methods are provided in which a clock signal is generated that maximizes the setup and hold window of input data. In at least some embodiments, a divider circuit provides a clock signal in one clock domain that has a rising edge located very close to the falling edge of a system clock in another clock domain.
    Type: Grant
    Filed: August 29, 2001
    Date of Patent: December 20, 2005
    Assignee: Rambus Inc.
    Inventors: Kun-Yung Ken Chang, Chaofeng Huang
  • Patent number: 6952331
    Abstract: A positioner (20) for a disk drive (10) that includes a magnet assembly (52), a conductor assembly (54), and a control system (22) is provided herein. The magnet assembly (52) includes a pair of magnet arrays (56A) (56B) and a pair of spaced apart flux return plates (75A) (75B). The conductor assembly (54) includes a coil array (78). The coil array includes a first portion (84) and a second portion (86) that are positioned substantially perpendicular to a longitudinal axis (43) of an E-block (16). The control system (22) directs current to electrically excite the first and second portions (84) (86) to generate a first force F1 and a second force F2 which are (i) parallel to the longitudinal axis (43) of the E-block (16), and (ii) equal in magnitude and directionally opposite to better position a data transducer (50) on a target track (32) of a storage disk (28).
    Type: Grant
    Filed: January 23, 2001
    Date of Patent: October 4, 2005
    Assignee: Maxtor Corporation
    Inventor: Ken Chang
  • Publication number: 20050114889
    Abstract: A method for searching television channel is provided. An initial frequency and a frequency search interval are set. Thereafter, using the initial frequency as the starting point, television signals are scanned to find any television channel within a designated frequency bandwidth. The channel ID is resolved from the channel frequency based on a specific broadcasting system on each detecting of the channel signals. The channel frequency and frequency ID of any television channel thus found are also stored. In this invention, the television channel is searched by frequency instead of a channel table as in a conventional method.
    Type: Application
    Filed: October 29, 2004
    Publication date: May 26, 2005
    Inventors: Bao-Kim Liu, Jung-Yi Yang, Chun-Hao Lee, Chien-Ken Chang