Patents by Inventor Chia-Cheng Chang

Chia-Cheng 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: 20100302788
    Abstract: An LED lamp-set includes a lamp, which is a round-shape cap and an interior of which contains an LED holding slot to emplace an LED. A bottom of the lamp is connected and fixed with a lamp holder which can be made by a metallic material to dissipate heat generated by the LED. The lamp holder is provided with locking holes to lock the lamp and the LED on the lamp holder through locking elements. An outer rim of the lamp holder can be provided with lamp holder fixing holes to fix the lamp-set in a usage condition. A top end or an outer rim of the lamp can be provided additionally with a lamp shade to further improve versatility of application.
    Type: Application
    Filed: May 28, 2009
    Publication date: December 2, 2010
    Inventor: Chia-Cheng CHANG
  • Publication number: 20090103300
    Abstract: A fluorescent lamp holder combination device includes a main lamp holder and an auxiliary lamp holder set, which is provided with an auxiliary lamp holder. The main lamp holder is internally configured with a multifunction ballast, which is electrically connected to a conducting portion. Each of the conducting portions is electrically connected to a connecting portion of each of the auxiliary lamp holders by means of a set of conducting cables, thereby enabling parallel connection between each of the auxiliary lamp holders using the single multifunction ballast, and achieving the effectiveness to enable the single multifunction ballast to provide stable rectification and energy saving for the auxiliary lamp holders. Furthermore, a starting capacitor and current-limiting inductor can be disposed within each of the auxiliary lamp holders, thereby reducing use-cost of the set of conducting cables while facilitating maintenance of the starting capacitors and the current-limiting inductors.
    Type: Application
    Filed: December 23, 2008
    Publication date: April 23, 2009
    Inventor: Chia-Cheng CHANG
  • Publication number: 20090032288
    Abstract: A connector including a first pin and a second pin is disclosed. The first pin includes a first side including a first protrudent part. The second pin includes a second side facing the first side. The first protrudent part approaches the second side.
    Type: Application
    Filed: September 3, 2008
    Publication date: February 5, 2009
    Inventors: Tien-Ko LAI, Muh-Jin Uang, Chia-Cheng Chang
  • Publication number: 20090035968
    Abstract: A connector including a first pin and a second pin is disclosed. The first pin includes a first side including a first protrudent part. The second pin includes a second side facing the first side. The first protrudent part approaches the second side.
    Type: Application
    Filed: August 2, 2007
    Publication date: February 5, 2009
    Inventors: Tien-Ko Lai, Muh-Jin Uang, Chia-Cheng Chang
  • Patent number: 7052374
    Abstract: An adjustable slurry dispensing device for use with a chemical mechanical polishing apparatus is disclosed. The slurry arm is pivotally connected to the polishing apparatus and has a slurry delivery assembly that is translatable along the length of the arm. This combination of adjustments allows the user to deposit polishing slurry at a desired location on the polishing pad of the polishing apparatus. The dispensing device may be motorized, in which case the slurry arm may be automatically pivotable and the slurry delivery assembly may be automatically translatable along the slurry arm. The motors may be controlled by a computer, or they may be manually adjusted by the user. A method of using the apparatus is also disclosed.
    Type: Grant
    Filed: March 1, 2005
    Date of Patent: May 30, 2006
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Fang-lin Lu, Wen-chen Chien, Chia-cheng Chang, Yung-wang Lo
  • Publication number: 20050260623
    Abstract: The present invention relates to the identification of adult human stem cells as well as the identification of metastatic cancer cells by detecting the expression of Oct-4, and the lack of GJIC activity. The invention further provides methods of identifying compounds that possess carcinogenic initiator activity, as well as compounds that protect against this earliest stage of cancer.
    Type: Application
    Filed: February 28, 2005
    Publication date: November 24, 2005
    Inventors: James Trosko, Mei-Hui Tai, Chia-Cheng Chang, L. Olson, Burra Madhukar
  • Publication number: 20050260748
    Abstract: Disclosed are compositions and methods for isolating, immortalizing and differentiating adult stem cells, for example, particular human clonal adult liver stem cells or adipose stem cells, including specialized cell culture media for the isolation and propagation of such stem cells. Also disclosed are methods of screening for toxicity, carcinogenicity and therapeutic activity using such stem cells and immortalized or differentiated derivatives thereof. In addition, methods of treatment using such stem cells and their differentiated or immortalized derivatives thereof are disclosed.
    Type: Application
    Filed: February 28, 2005
    Publication date: November 24, 2005
    Inventors: Chia-Cheng Chang, Jin-Lian Tsai, Kung-Kai Kuo, Tsai-Ming Lin
  • Patent number: 6870437
    Abstract: The present invention provides an electro-magnetic interference protection circuit for a clock buffer. The present invention not only uses a ferrite bead that is serially connected with the power source of the clock buffer to protect the clock buffer from electro-magnetic interference. The ferrite bead also connects in parallel with a capacitor to reduce the distortion of a clock signal out-putting by the clock buffer due to the ferrite bead, thereby making the communication devices work properly.
    Type: Grant
    Filed: September 3, 2003
    Date of Patent: March 22, 2005
    Assignee: Wistron Corporation
    Inventors: Chia-Cheng Chang, Muh-Jin Uang
  • Publication number: 20040246061
    Abstract: The present invention provides an electro-magnetic interference protection circuit for a clock buffer. The present invention not only uses a ferrite bead that is serially connected with the power source of the clock buffer to protect the clock buffer from electro-magnetic interference. The ferrite bead also connects in parallel with a capacitor to reduce the distortion of a clock signal out-putting by the clock buffer due to the ferrite bead, thereby making the communication devices work properly.
    Type: Application
    Filed: September 3, 2003
    Publication date: December 9, 2004
    Inventors: CHIA-CHENG CHANG, MUH-JIN UANG
  • Publication number: 20020140543
    Abstract: A keyless remote control security system compromising a transmitter and a receiver. The transmitter consists of a push button set, a multiplexer IC, an encoder IC, a push button indication light, a radio transmission circuitry and an antenna. The receiver consists of a micro controller, a power supply, a radio receiving circuitry, a command button set, an electronic lock, a security circuitry, a main malfunction detection circuitry, a secondary, malfunction detection circuitry. The receiver and electronic lock are installed inside a door and controlled by transmitter remotely without key.
    Type: Application
    Filed: April 2, 2001
    Publication date: October 3, 2002
    Inventor: Chia-Cheng Chang
  • Patent number: 6140119
    Abstract: A method is described for culturing morphologically and antigenically distinguishable types of normal human breast epithelial cells (HBEC) derived from reduction mammoplasty. Type I HBEC showed luminal and stem cell characteristics i.e. the ability to form budding/ductal structures when cultured on MATRIGEL and expressed a variant ER (.about.48 Kd) which has a deletion in the DNA binding domain (exon 2). In contrast, Type II HBEC with basal epithelial phenotype are ER-negative when cultured on MATRIGEL. Simian virus 40 (SV40) transformed Type I and Type II HBEC lines also expressed the variant ER. Tumors formed in athymic nude mice by in vitro transformed tumorigenic Type I cell lines, however, expressed a high level of wild type ER which was undetectable in these cells grown in vitro before and after tumor formation. Thus, there appears to be a differentional ER mRNA splicing between the in vitro and in vivo milieu.
    Type: Grant
    Filed: January 29, 1997
    Date of Patent: October 31, 2000
    Assignee: Michigan State University
    Inventors: Chia-Cheng Chang, James Trosko
  • Patent number: 5814511
    Abstract: Described is a substantially purified human breast epithelial cell (Type I HBEC) displaying the following characteristics: variable cell shape; smooth cell colony boundary; deficiency in gap junctional intercellular communication; positive expression of epithelial membrane antigen and keratin 18; negative expression of keratin 14, .alpha.6 integrin and gap junction genes for connexins (Cx26, Cx32 and Cx43); growth promotion by fetal bovine serum; induction by cholera toxin to differentiate into Type II HBEC (prior art); and acquisition anchorage independent growth by Semian virus 40 transfection. Also described is a method of obtaining the above-identified epithelial cells comprising the steps of: a) development of a mixture of human breast epithelial cells from reduction mammoplasty tissues using the MSU-1 medium; b) eliminating stromal fibroblasts by a trypsin (0.002%) and ethylenediamine tetraacetic acid (0.
    Type: Grant
    Filed: November 16, 1995
    Date of Patent: September 29, 1998
    Assignee: Michigan State University
    Inventors: Chia-Cheng Chang, James E. Trosko
  • Patent number: 5650317
    Abstract: Described is a substantially purified human breast epithelial cell (Type I HBEC) displaying the following characteristics: variable cell shape; smooth cell colony boundary; deficiency in gap junctional intercellular communication; positive expression of epithelial membrane antigen and keratin 18; negative expression of keratin 14, .alpha.6 integrin and gap junction genes for connexins (Cx26, Cx32 and Cx43); growth promotion by fetal bovine serum; induction by cholera toxin to differentiate into Type II HBEC (prior art); and acquisition of anchorage independent growth by Semian virus 40 transfection. Also described is a method of obtaining the above-identified epithelial cells comprising the steps of: a) development of a mixture of human breast epithelial cells from reduction mammoplasty tissues using the MSU-1 medium; b) eliminating stromal fibroblasts by a trypsin (0.002%) and ethylenediamine tetraacetic acid (0.
    Type: Grant
    Filed: September 16, 1994
    Date of Patent: July 22, 1997
    Assignee: Michigan State University
    Inventors: Chia-Cheng Chang, James E. Trosko