Patents by Inventor Han-Chao Chen

Han-Chao Chen 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: 20240150534
    Abstract: A polyethylene terephthalate composite material containing glass fiber and a method for manufacturing the same are provided. The polyethylene terephthalate composite material includes 40 to 65.5 parts by weight of polyethylene terephthalate, 5 to 40 parts by weight of the glass fiber, and 0.15 to 2.5 parts by weight of a crystallizing agent. The crystallizing agent includes an inorganic crystallizing agent and an organic crystallizing agent, and an added amount of the inorganic crystallizing agent is less than an added amount of the organic crystallizing agent.
    Type: Application
    Filed: January 9, 2023
    Publication date: May 9, 2024
    Inventors: TE-CHAO LIAO, HAN-CHING HSU, CHUN-LAI CHEN, Jui-Jung Lin
  • Publication number: 20240117173
    Abstract: A composition and a manufacturing method of a highly flame-retardant and low-smoke extruded polyvinyl chloride pipe are provided. The composition includes a polyvinyl chloride resin material, a flame retardant additive and a carbon forming additive. The polyvinyl chloride resin material is in an amount between 10 PHR (parts per hundred resin) and 90 PHR. The flame retardant additive is in an amount between 0.5 PHR and 2.0 PHR, and is a phosphorus-containing flame retardant modified by a modifier. The carbon forming additive is in an amount between 0.2 PHR and 1.0 PHR. The carbon forming additive is at least one material selected from a group consisting of zinc chloride, zinc stearate, calcium stearate, zinc hydroxystannate, anhydrous zinc stannate, zinc phosphate and zirconium phosphate. A total added amount of the flame retardant additive and the carbon forming additive in the composition is not greater than 3 PHR.
    Type: Application
    Filed: November 29, 2022
    Publication date: April 11, 2024
    Inventors: TE-CHAO LIAO, HAN-CHING HSU, CHUN-LAI CHEN, WEN-YI WU
  • Publication number: 20240117155
    Abstract: A manufacturing method of a heat-resistant tableware and a molded article of the heat-resistant tableware are provided. The manufacturing method of the heat-resistant tableware includes: providing a polyester composite material that includes 50 wt % to 85 wt % of polyethylene terephthalate, 0 wt % to 5 wt % of an organic nucleating agent, and 10 wt % to 30 wt % of an inorganic nucleating agent; and injecting the polyester composite material into a mold in an injection molding process, in which a mold temperature of the mold is controlled to be not less than 110° C., and a crystallinity of the polyester composite material in the mold is controlled to be between 20% and 30%, so that the polyester composite material is formed into the molded article of the heat-resistant tableware in the mold, and the molded article has a heat distortion temperature of not less than 150° C.
    Type: Application
    Filed: November 29, 2022
    Publication date: April 11, 2024
    Inventors: TE-CHAO LIAO, HAN-CHING HSU, CHUN-LAI CHEN
  • Publication number: 20240117172
    Abstract: A composition and a manufacturing method of a highly flame-retardant and low-smoke injection-molded polyvinyl chloride pipe are provided. The composition includes a polyvinyl chloride resin material, a chlorinated polyvinyl chloride resin material, a flame retardant additive and a carbon forming additive. A first number-average degree of polymerization (DPn) of the polyvinyl chloride resin material is between 600 and 1,000. A second number-average degree of polymerization of the chlorinated polyvinyl chloride resin material is between 600 and 800. A difference between the first number-average degree of polymerization and the second number-average degree of polymerization is within 400. The flame retardant additive is a phosphorus-containing flame retardant modified by a modifier. A total added amount of the flame retardant additive and the carbon forming additive in the composition is not greater than 3 PHR.
    Type: Application
    Filed: November 29, 2022
    Publication date: April 11, 2024
    Inventors: TE-CHAO LIAO, HAN-CHING HSU, CHUN-LAI CHEN, WEN-YI WU
  • Publication number: 20240117176
    Abstract: A chlorinated polyvinyl chloride resin composition, an extruded sheet and a method for manufacturing the same are provided. The chlorinated polyvinyl chloride resin composition includes a chlorinated polyvinyl chloride resin and a plasticizing processing aid. The chlorinated polyvinyl chloride resin has an amount of 80 parts by weight to 120 parts by weight, a degree of polymerization of from 500 to 1,100, and a chlorine content of from 60% to 75%. The plasticizing processing aid includes a vinyl chloride graft copolymer and an acrylic compound. A grafted functional group of the vinyl chloride graft copolymer is at least one of polyol ester and ethylene vinyl acetate.
    Type: Application
    Filed: December 13, 2022
    Publication date: April 11, 2024
    Inventors: TE-CHAO LIAO, HAN-CHING HSU, CHUN-LAI CHEN, WEN-YI WU
  • Publication number: 20240117174
    Abstract: A PVC resin composition and a method for manufacturing a pipe having high heat resistance and transparency are provided. The PVC resin composition includes 100 phr of a PVC resin, 0.5 phr to 5 phr of a modifier, and 1 phr to 10 phr of a heat resistance improving agent. A degree of polymerization of the PVC resin is from 800 to 1,350. The modifier is a polymer containing a first monomer and a second monomer. The first monomer is ethylene or a derivative of the ethylene, and the second monomer is a polyester.
    Type: Application
    Filed: December 13, 2022
    Publication date: April 11, 2024
    Inventors: TE-CHAO LIAO, HAN-CHING HSU, CHUN-LAI CHEN, WEN-YI WU
  • Publication number: 20240101801
    Abstract: A fiber composite material is provided. The fiber composite material includes 40 phr to 65 phr of a polypropylene resin, 30 phr to 60 phr of a long glass fiber, 0.5 phr to 5 phr of a black masterbatch, and 0.5 phr to 10 phr of a compatibilizer. The black masterbatch contains carbon black having a basic active group on a surface of the carbon black. The compatibilizer is grafted with maleic anhydride.
    Type: Application
    Filed: November 29, 2022
    Publication date: March 28, 2024
    Inventors: TE-CHAO LIAO, HAN-CHING HSU, CHUN-LAI CHEN
  • Patent number: 7821326
    Abstract: The present invention relates to a charge pump, which uses a chopper circuit or a clamp circuit coupled between a pump capacitor and an output capacitor for preventing a parasitic transistor produced by a switching mechanism from turning on. Thereby, the performance of the charge pump is improved effectively.
    Type: Grant
    Filed: July 23, 2008
    Date of Patent: October 26, 2010
    Assignee: Sitronix Technology Corp.
    Inventors: Cheng-Chung Yeh, Han-Chao Chen
  • Publication number: 20100220072
    Abstract: A modulized touch panel is revealed. The modulized touch panel includes a first substrate layer and a second substrate layer while the second substrate layer is corresponding to the first substrate layer A touch panel is integrated with a control chip so as to reduce complexity and occupied area of the circuit that transmits signals between electronic devices and the touch panel while increasing scan lines of the touch panel. Thus circuit of electronics is simplified. Moreover, the first substrate layer or the second substrate layer of the touch panel is disposed with a metal layer for reducing impedance and improving signal stability.
    Type: Application
    Filed: January 22, 2010
    Publication date: September 2, 2010
    Applicant: SITRONIX TECHNOLOGY CORP.
    Inventors: CHIN-WEI CHIEN, CHIH-YU LIN, HAN-CHAO CHEN
  • Publication number: 20090261891
    Abstract: The present invention relates to a charge pump, which uses a chopper circuit or a clamp circuit coupled between a pump capacitor and an output capacitor for preventing a parasitic transistor produced by a switching mechanism from turning on. Thereby, the performance of the charge pump is improved effectively.
    Type: Application
    Filed: July 23, 2008
    Publication date: October 22, 2009
    Inventors: Cheng-Chung YEH, Han-Chao Chen
  • Patent number: 6831286
    Abstract: A method for determining an emitting angle of an optical pickup head of an optical drive. A jitter inspection device comprises a jig, simulating and adjusting a tilt angle of the optical pickup head, and a jitter meter installed on the jig, inspecting jitter values at different tilt angles. A quadratic surface equation decreases the data points required for measurement to five, and enables product efficiency to raise 17% , such that the minimum jitter value and optimum tilt angle can be obtained quickly.
    Type: Grant
    Filed: February 17, 2004
    Date of Patent: December 14, 2004
    Assignee: Lite-On It Corporation
    Inventors: Han-Chao Chen, Jeng-Jiun Chen, Bor-Ruey Chen
  • Patent number: 6785899
    Abstract: An optical disk adjusting assembly for an optical disk reading device. The optical disk adjusting assembly includes a chassis, a first guide rod, a second guide rod, an adjustable positioning element, a clamping plate, a disk rotating module and a disk reading module. The first guide rod and the second guide rod are respectively disposed on the chassis. The adjustable positioning element constrains two ends of the first guide rod and one end of the second guide rod. The clamping plate is secured to the chassis by screws and used to restrain a portion of the adjustable positioning element. Thus, the adjustable positioning element can constrain and adjust the two guide rods efficiently.
    Type: Grant
    Filed: December 19, 2002
    Date of Patent: August 31, 2004
    Assignee: Lite-On It Corporation
    Inventors: Han-Chao Chen, Jeng-Jiun Chen, Bor-Ruey Chen
  • Publication number: 20040160876
    Abstract: A method for determining an emitting angle of an optical pickup head of an optical drive. A jitter inspection device comprises a jig, simulating and adjusting a tilt angle of the optical pickup head, and a jitter meter installed on the jig, inspecting jitter values at different tilt angles. A quadratic surface equation decreases the data points required for measurement to five, and enables product efficiency to raise 17% , such that the minimum jitter value and optimum tilt angle can be obtained quickly.
    Type: Application
    Filed: February 17, 2004
    Publication date: August 19, 2004
    Inventors: Han-Chao Chen, Jeng-Jiun Chen, Bor-Ruey Chen
  • Patent number: 6772424
    Abstract: A disk drive has a tray with a chassis secured to the tray, the tray and the chassis being housed inside a housing. The disk drive includes a slide mechanism that is positioned between the chassis and the tray, and which is movable independently from the chassis. The disk drive also includes a locking and ejection mechanism that includes a first part that is secured to the chassis and a second part that is secured to the slide mechanism. The tray is locked inside the housing when the first part and second part engage each other, and the tray is ejected from the housing when engagement between the first part and second part is released.
    Type: Grant
    Filed: October 16, 2001
    Date of Patent: August 3, 2004
    Assignee: Lite-On IT Corp.
    Inventors: Shih-Lin Yeh, Han-Chao Chen, Jui-Nan Chuang
  • Publication number: 20030235346
    Abstract: An automatic measurement method for an auto-collimator. When a charge-coupled device catches the image of an object, the program performs image management detection. When the program finds obvious reflective spots in the captured image, the program initiates detection. The method obviates the need for operators to initiate measurement, shortening the measurement procedure and eliminating possible damage due to operator error.
    Type: Application
    Filed: January 16, 2003
    Publication date: December 25, 2003
    Inventors: Han-chao Chen, Jeng-Jiun Chen, Bor-Ruey Chen
  • Publication number: 20030235142
    Abstract: An optical disk adjusting assembly for an optical disk reading device. The optical disk adjusting assembly includes a chassis, a first guide rod, a second guide rod, an adjustable positioning element, a clamping plate, a disk rotating module and a disk reading module. The first guide rod and the second guide rod are respectively disposed on the chassis. The adjustable positioning element constrains two ends of the first guide rod and one end of the second guide rod. The clamping plate is secured to the chassis by screws and used to restrain a portion of the adjustable positioning element. Thus, the adjustable positioning element can constrain and adjust the two guide rods efficiently.
    Type: Application
    Filed: December 19, 2002
    Publication date: December 25, 2003
    Inventors: Han-Chao Chen, Jeng-Jiun Chen, Bor-Ruey Chen
  • Patent number: 6628597
    Abstract: A guide rail assembly for use with a disk drive has a first rail that has a raised ridge with a wavy upper edge and a wavy lower edge. The assembly also has a second rail having a channel defined therein, with the channel having a wavy upper wall and a wavy lower wall. The raised ridge of the first rail is positioned for reciprocating movement inside the channel of the second rail.
    Type: Grant
    Filed: August 31, 2001
    Date of Patent: September 30, 2003
    Assignee: Lite-On It Corp.
    Inventors: Shih-Lin Yeh, Han-Chao Chen, Jui-Nan Chuang
  • Publication number: 20030072243
    Abstract: A disk drive has a tray with a chassis secured to the tray, the tray and the chassis being housed inside a housing. The disk drive includes a slide mechanism that is positioned between the chassis and the tray, and which is movable independently from the chassis. The disk drive also includes a locking and ejection mechanism that includes a first part that is secured to the chassis and a second part that is secured to the slide mechanism. The tray is locked inside the housing when the first part and second part engage each other, and the tray is ejected from the housing when engagement between the first part and second part is released.
    Type: Application
    Filed: October 16, 2001
    Publication date: April 17, 2003
    Inventors: Shih-Lin Yeh, Han-Chao Chen, Jui-Nan Chuang
  • Publication number: 20030043719
    Abstract: A guide rail assembly for use with a disk drive has a first rail that has a raised ridge with a wavy upper edge and a wavy lower edge. The assembly also has a second rail having a channel defined therein, with the channel having a wavy upper wall and a wavy lower wall. The raised ridge of the first rail is positioned for reciprocating movement inside the channel of the second rail.
    Type: Application
    Filed: August 31, 2001
    Publication date: March 6, 2003
    Inventors: Shih-Lin Yeh, Han-Chao Chen, Jui-Nan Chuang