Patents by Inventor Hung-Chang Wu

Hung-Chang Wu 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: 20240159642
    Abstract: A smoke detector with an anti-insect function includes a substrate, an optical detection module, a top cover, a base and a perforated plate. The substrate has a ring shape region surrounding a central detection region, and a first block structure of the central detection region is protruded from the substrate and higher than an upper surface of the ring shape region. The optical detection module is disposed inside the central detection region. The top cover has a lateral wall. The base is disposed on the substrate and connected to the top cover to cover the optical detection module. The base has a second block structure partly overlapped with the lateral wall to form a guiding channel. The perforated plate is disposed between the lateral wall and the second block structure to prevent an insect from moving into the top cover through the guiding channel.
    Type: Application
    Filed: January 25, 2024
    Publication date: May 16, 2024
    Applicant: PixArt Imaging Inc.
    Inventors: Yen-Chang Chu, Cheng-Nan Tsai, Chih-Ming Sun, Zhi-Hao Wu, Hung-Yu Lai
  • Publication number: 20230174779
    Abstract: Disclosed are compositions comprising a) one or more polycarbonates; b) one or more first colorants; c) one or more flame retardants; and d) one or more particles having a melting point above the temperature at which polycarbonates are processed wherein the particles are coated with an organic polymer having a melting point above the processing temperature of the one or more polycarbonates; wherein the composition when molded exhibits a flecked appearance. The particles have a second colorant bound to the surface of the particles by the organic polymer. The organic polymer may be crosslinked. The one or more polycarbonates may comprise post-consumer recycled polycarbonates. Disclosed are molded products prepared from the disclosed compositions. The molded products exhibit good properties as disclosed herein. The molded products have a flecked appearance.
    Type: Application
    Filed: January 30, 2023
    Publication date: June 8, 2023
    Inventors: Claude T. Van Nuffel, Yao-Chu Chung, Kai-Leung Cheng, Hung Chang Wu, Jih-Chiang Hsieh
  • Publication number: 20200354569
    Abstract: Disclosed are compositions comprising a) one or more polycarbonates; b) one or more first colorants; c) one or more flame retardants; and d) one or more particles having a melting point above the temperature at which polycarbonates are processed wherein the particles are coated with an organic polymer having a melting point above the processing temperature of the one or more polycarbonates; wherein the composition when molded exhibits a flecked appearance. The particles have a second colorant bound to the surface of the particles by the organic polymer. The organic polymer may be crosslinked. The one or more polycarbonates may comprise post-consumer recycled polycarbonates. Disclosed are molded products prepared from the disclosed compositions. The molded products exhibit good properties as disclosed herein. The molded products have a flecked appearance.
    Type: Application
    Filed: April 22, 2020
    Publication date: November 12, 2020
    Inventors: Claude T. Van Nuffel, Yao-Chu Chung, Kai-Leung Cheng, Hung Chang Wu, Jih-Chiang Hsieh
  • Patent number: 10563043
    Abstract: Polycarbonate compositions having good flame retardancy and high light transmittance are achieved using the combination of a polycarbonate, a charring salt flame retardant, and a low molecular weight silicone compound. Light diffusing compositions are achieved using a particulate light diffusing agent. The compositions preferably meet or exceed one or more (and most preferably all) of the following flame retardancy standards: (i) UL-94 V-0 (t=1 mm); (ii) UL-94 5VA (t=2.5 mm); (iii) UL-94 5VB (t=2.5 mm).
    Type: Grant
    Filed: March 14, 2017
    Date of Patent: February 18, 2020
    Assignee: TRINSEO EUROPE GMBH
    Inventors: Claude Van Nuffel, Hung Chang Wu
  • Publication number: 20170183478
    Abstract: Polycarbonate compositions having good flame retardancy and high light transmittance are achieved using the combination of a polycarbonate, a charring salt flame retardant, and a low molecular weight silicone compound. Light diffusing compositions are achieved using a particulate light diffusing agent. The compositions preferably meet or exceed one or more (and most preferably all) of the following flame retardancy standards: (i) UL-94 V-0 (t=1 mm); (ii) UL-94 5VA (t=2.5 mm); (iii) UL-94 5VB (t=2.5 mm).
    Type: Application
    Filed: March 14, 2017
    Publication date: June 29, 2017
    Inventors: Claude Van Nuffel, Hung Chang Wu
  • Patent number: 8427460
    Abstract: A flat display panel is provided. The flat display panel includes a substrate, a first driving line, a second driving line, and an ESD protection circuit. The ESD protection circuit includes a first crossing line, a second crossing line, and a first ESD protection device. The first crossing line crosses over the first driving line in a first crossing place. The second crossing line crosses over the second driving line in a second crossing place. The first ESD protection device is electrically connected to the first crossing line and to the second crossing line. Therefore, the flat display panel can avoid current leakage occurring when the first crossing place or the second crossing place is damaged.
    Type: Grant
    Filed: November 30, 2008
    Date of Patent: April 23, 2013
    Assignee: Chunghwa Picture Tubes, Ltd.
    Inventors: Hung-Chang Wu, Shian-Yi Huang, Shih-Chieh Lo
  • Publication number: 20100053487
    Abstract: An LCD panel includes a group of data pads. The group of data pads includes at least a Vcom pad and a switch pad. The Vcom pad includes a first part and a second part. The switch pad includes a semiconductor layer connected between the first part and the second part. The first pad is coupled to the semiconductor layer, but formed on a different layer from the semiconductor layer. The semiconductor layer can be turned on by a voltage on the first pad, thereby turning on the Vcom pad.
    Type: Application
    Filed: December 29, 2008
    Publication date: March 4, 2010
    Inventors: Hung-Chang Wu, Chin-Lung Ma, Shih-Jung Huang
  • Publication number: 20090251447
    Abstract: A flat display panel is provided. The flat display panel includes a substrate, a first driving line, a second driving line, and an ESD protection circuit. The ESD protection circuit includes a first crossing line, a second crossing line, and a first ESD protection device. The first crossing line crosses over the first driving line in a first crossing place. The second crossing line crosses over the second driving line in a second crossing place. The first ESD protection device is electrically connected to the first crossing line and to the second crossing line. Therefore, the flat display panel can avoid current leakage occurring when the first crossing place or the second crossing place is damaged.
    Type: Application
    Filed: November 30, 2008
    Publication date: October 8, 2009
    Applicant: Chunghwa Picture Tubes, LTD.
    Inventors: Hung-Chang Wu, Shian-Yi Huang, Shih-Chieh Lo
  • Publication number: 20090120808
    Abstract: A device for detecting methanol concentration in an alcohol-containing solution is disclosed. The device implements an electrochemical bio-detector based on a two-enzyme system to quickly, easily and accurately measure methanol concentration in an alcohol-containing solution at a relatively low cost. A method for detecting methanol concentration in a sample using the same device is also disclosed.
    Type: Application
    Filed: October 31, 2007
    Publication date: May 14, 2009
    Applicant: Development Center for Biotechnology
    Inventors: Hung-Chang Wu, Jui-Lung Chien, Chien-Hsiao Chen, Hsiu-Ping Pearl Lin