Patents by Inventor Hung-Liang Chou

Hung-Liang Chou 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).

  • Patent number: 7585388
    Abstract: Fabric-creped absorbent sheet has an MD bending length of about 3.5 cm or more as well as an absorbency of about 3 g/g or more. The sheet is preferably produced without through drying or dry creping and is a low-dust product especially suitable for automatic towel dispensers.
    Type: Grant
    Filed: June 12, 2006
    Date of Patent: September 8, 2009
    Assignee: Georgia-Pacific Consumer Products LP
    Inventors: Kang C. Yeh, Stephen J. McCullough, Hung Liang Chou, Mark S. Hunter, Thomas E. Lyse, Ronald R. Reeb
  • Patent number: 7585389
    Abstract: Fabric-creped absorbent sheet has an MD bending length of about 3.5 cm or more as well as an absorbency of about 3 g/g or more. The sheet is preferably produced without through drying or dry creping and is a low-dust product especially suitable for automatic towel dispensers.
    Type: Grant
    Filed: June 12, 2006
    Date of Patent: September 8, 2009
    Assignee: Georgia-Pacific Consumer Products LP
    Inventors: Kang C. Yeh, Stephen J. McCullough, Hung Liang Chou, Mark S. Hunter, Thomas E. Lyse, Ronald R. Reeb
  • Publication number: 20090194244
    Abstract: Kitchen roll toweling having surprising softness, absorbency and bulk is formed from a furnish comprising long cellulosic fiber having: (i) average weight-weighted fiber length of at least 2.5 mm; coarseness at least 15.5 mg/100 mm; and a Canadian Standard freeness of at least 600 ml combined with (ii) short cellulosic fiber having an average weight-weighted fiber length of at most 1.9 mm having a Canadian Standard freeness of at least 500 ml in a weight ratio of short fiber to long fiber of at least 0.25 to 1.0 to form a nascent web having a consistency in the range from about 10% to about 35% which is rush transferred from one fabric to another at a speed differential of at least about 15%; and creping the web from a Yankee dryer while controlling the real crepe to at most 3% and thereafter converting the web to form a two ply product having a basis weight of at least 29 lb/rm and caliper of at least 220 mils/8 sheets.
    Type: Application
    Filed: January 22, 2009
    Publication date: August 6, 2009
    Applicant: Georgia-Pacific Consumer Products LP
    Inventors: Frank D. Harper, Mark L. Robinson, Hung Liang Chou, Steven R. Olson, Martin A. Hynnek, Gary L. Worry
  • Patent number: 7570029
    Abstract: An active power conditioner includes a first power electronic switch set, a second power electronic switch set, a third power electronic switch set, an input filter and an output filter. The active power conditioner can supply a stable AC voltage to a load when a voltage variation occurs at an AC power source by controlling either the second power electronic switch set or the third power electronic switch set via high-frequency switching, and the other power electronic switch sets that are not switched in high frequency are controlled to switch in low-frequency switching.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: August 4, 2009
    Assignee: Ablerex Electronics Co., Ltd.
    Inventors: Chin-Chang Wu, Hung-Liang Chou, Min-Sheng Huang, Han-Sheng Wei, Ya-Tsung Feng
  • Publication number: 20090174260
    Abstract: A UPS system includes one or more UPS units with identical or different capacities. A control circuit, used to control a DC/AC inverter of the UPS unit, includes a voltage feedback control circuit and a current feedforward control circuit. The voltage feedback control circuit is used to control the amplitude and the waveform of load voltage. The current feedforward control circuit is used to operate the DC/AC inverter of the UPS unit as a virtual fundamental resistor and a virtual harmonic resistor which are serially connected to an output terminal of the DC/AC inverter such that each UPS unit can be distributed to provide an output current according to the capacity ratio of the UPS system.
    Type: Application
    Filed: August 19, 2008
    Publication date: July 9, 2009
    Inventors: Chin-Chang Wu, Hung-Liang Chou, Yu-Hsiu Lin, Wen-Jie Hou, Han-Sheng Wei
  • Publication number: 20090159224
    Abstract: The present invention is a paper product including a thermally bondable fiber which may be surfactant coated. The paper product according to the present invention has improved strength and absorbency characteristics. The paper product of the present invention may be embossed and heat cured to result in an attractive and absorbent product.
    Type: Application
    Filed: January 8, 2009
    Publication date: June 25, 2009
    Applicant: Georgia-Pacific Consumer Products LP
    Inventors: Hung Liang Chou, H. Charles Thomas, Daniel W. Sumnicht
  • Publication number: 20090159223
    Abstract: An absorbent cellulosic sheet having variable local basis weight includes a papermaking-fiber reticulum provided with (i) a plurality of cross-machine direction (CD) extending, fiber-enriched pileated regions of relatively high local basis weight interconnected by (ii) a plurality of elongated densified regions of compressed papermaking fibers. The elongated densified regions have relatively low local basis weight and are generally oriented along the machine direction (MD) of the sheet and have an MD/CD aspect ratio of at least 1.5. The products are most preferably prepared by way of a compactive dewatering/wet crepe process.
    Type: Application
    Filed: January 8, 2009
    Publication date: June 25, 2009
    Applicant: Georgia-Pacific Consumer Products LP
    Inventors: Steven L. Edwards, Guy H. Super, Stephen J. McCullough, Ronald R. Reeb, Hung Liang Chou, Kang Chang Yeh, John H. Dwiggins, Frank D. Harper
  • Publication number: 20090120598
    Abstract: An absorbent cellulosic sheet having variable local basis weight includes a papermaking-fiber reticulum provided with (i) a plurality of cross-machine direction (CD) extending, fiber-enriched pileated regions of relatively high local basis weight interconnected by (ii) a plurality of elongated densified regions of compressed papermaking fibers. The elongated densified regions have relatively low local basis weight and are generally oriented along the machine direction (MD) of the sheet and have an MD/CD aspect ratio of at least 1.5. The products are most preferably prepared by way of a compactive dewatering/wet crepe process.
    Type: Application
    Filed: January 8, 2009
    Publication date: May 14, 2009
    Inventors: Steven L. Edwards, Guy H. Super, Stephen J. McCullough, Ronald R. Reeb, Hung Liang Chou, Kang Chang Yeh, John H. Dwiggins, Frank D. Harper
  • Patent number: 7494563
    Abstract: An absorbent cellulosic sheet having variable local basis weight includes a papermaking-fiber reticulum provided with (i) a plurality of cross-machine direction (CD) extending, fiber-enriched pileated regions of relatively high local basis weight interconnected by (ii) a plurality of elongated densified regions of compressed papermaking fibers. The elongated densified regions have relatively low local basis weight and are generally oriented along the machine direction (MD) of the sheet and have an MD/CD aspect ratio of at least 1.5. The products are most preferably prepared by way of a compactive dewatering/wet crepe process.
    Type: Grant
    Filed: May 16, 2007
    Date of Patent: February 24, 2009
    Assignee: Georgia-Pacific Consumer Products LP
    Inventors: Steven L. Edwards, Guy H. Super, Stephen J. McCullough, Ronald R. Reeb, Hung Liang Chou, Kang Chang Yeh, John H. Dwiggins, Frank D. Harper
  • Patent number: 7450407
    Abstract: A harmonic-suppressing AC/DC power converter employs a control method for permitting the AC/DC power converter only to detect an input AC current and an output DC voltage. The control method can control the AC side of the AC/DC power converter to generate a voltage which is proportional to the input AC current. Thereby, the AC/DC power converter acts as a virtual resistor having a linear resistance characteristic. Accordingly, the input AC current of the AC/DC power converter can be controlled to approximate nearly as a sinusoidal wave with the performance of high input power factor and low input harmonic current.
    Type: Grant
    Filed: January 17, 2006
    Date of Patent: November 11, 2008
    Assignee: UIS Abler Electronics Co., Ltd.
    Inventors: Chin-Chang Wu, Hung-Liang Chou, Min-Sheng Huang, Wen-Jet Hou
  • Patent number: 7446510
    Abstract: A diagnosis method for SOH of batteries includes the steps of: providing data of discharge voltages and currents of a battery unit; setting an acceptable value of a predetermined period of time and an acceptable range of variation rate of discharge current for the battery unit; calculating variation rates of discharge voltages and currents of the battery unit within the predetermined period of time by using the data of discharge voltages and currents; recording the data of discharge voltages and currents of the batteries and variation rates thereof; comparing the data of discharge voltages of the batteries and the variation rates thereof if the variation rates of discharge current are fallen within the acceptable range of current variation with selected reference data; and converting results of compared data of discharge voltages of the battery unit and the variation rates thereof into a SOH index.
    Type: Grant
    Filed: January 22, 2007
    Date of Patent: November 4, 2008
    Assignee: Ablerex Electronics Co., Ltd.
    Inventors: Hung-Liang Chou, Yu-Hua Sun, Kuen-Der Wu, Chin-Chang Wu, Ming-Hsun Hsieh, Ya-Tsung Feng
  • Patent number: 7446511
    Abstract: An active power conditioner, connecting with a load and a power source in parallel, includes a DC power capacitor, a power converter, a high-frequency filter and a control circuit. The control circuit detects the voltage of the DC power capacitor and the current of the power source, thereby performing a closed loop control to stabilize the voltage of the DC power capacitor and performing a feed forward control to generate a driving signal for driving the power converter. The power converter actuates the DC power capacitor to supply a current via the high-frequency filter to reduce the reactive and harmonic components of load current. The load is converted to the linear resistance characteristic, observed from the power source side.
    Type: Grant
    Filed: August 11, 2006
    Date of Patent: November 4, 2008
    Assignee: Ablerex Electronics Co., Ltd.
    Inventors: Chin-Chang Wu, Hung-Liang Chou, Wen-Pin Hsu, Yu-Ting Kuo, Ya-Tsung Feng
  • Publication number: 20080264589
    Abstract: A method of manufacturing absorbent sheet is directed to a wet-press/fabric-crepe process wherein add-on of adhesive to the Yankee surface is at relatively low levels, yet sheet transfer is maintained and production increased. Materials are selected and process parameters are controlled such that a paper machine can be operated for at least 4 hours before the Yankee coating needs to be stripped. Preferably, average increase in Yankee hood temperature is less than 1° F./minute during a production interval.
    Type: Application
    Filed: February 19, 2008
    Publication date: October 30, 2008
    Applicant: GEORGIA-PACIFIC CONSUMER PRODUCTS LP.
    Inventors: Hung Liang Chou, Mark S. Hunter, Kang Chang Yeh
  • Publication number: 20080253153
    Abstract: An active power conditioner includes a first power electronic switch set, a second power electronic switch set, a third power electronic switch set, an input filter and an output filter. The active power conditioner can supply a stable AC voltage to a load when a voltage variation is occurred at an AC power source by controlling either the second power electronic switch set or the third power electronic switch set via high-frequency switching, and the other power electronic switch sets that are not switched in high frequency are controlled to switch in low-frequency switching.
    Type: Application
    Filed: December 21, 2007
    Publication date: October 16, 2008
    Inventors: Chin-Chang Wu, Hung-Liang Chou, Min-Sheng Huang, Han-Sheng Wei, Ya-Tsung Feng
  • Publication number: 20080219035
    Abstract: An active power filter comprises an energy storage capacitor, an inverter, a filtering circuit and a controller. The inverter is controlled to act as a virtual resister at a fundamental frequency for compensating for the power loss of the active power filter, act as a virtual capacitor at a fundamental frequency for compensating for a fundamental reactive power of the load, and/or generate a harmonic current for suppressing the harmonic currents of specific orders of the load.
    Type: Application
    Filed: August 28, 2007
    Publication date: September 11, 2008
    Inventors: Chin-Chang Wu, Hung-Liang Chou, Wen-Pin Hsu, Yu-Ting Kuo, Jiunn-Jye Yang
  • Patent number: 7394237
    Abstract: A maximum power point tracking method, applied to a tracking device, employs a DC/DC converter connecting with a solar cell array, and including a controller actuating the DC/DC converter to perform an active resistance characteristic; a maximum power point tracking circuit adjusting the active resistance of the DC/DC converter; monitoring a change of an output power of the solar cell array in determining a direction for adjusting the active resistance of the DC/DC converter; and the maximum power point tracking circuit repeatedly adjusting the active resistance of the DC/DC converter. If the change of the output power of the solar cell array is positive, the active resistance of the DC/DC converter is adjusted in the same direction; but, conversely, if the change of the output power of the solar cell array is negative, the active resistance of the DC/DC converter is adjusted in an opposite direction.
    Type: Grant
    Filed: October 3, 2006
    Date of Patent: July 1, 2008
    Assignee: UIS Abler Electronics Co., Ltd.
    Inventors: Hung-Liang Chou, Wen-Jung Chiang, Chin-Chang Wu, Ya-Tsung Feng, Li-Hsiang Lai
  • Patent number: 7345380
    Abstract: A backup power supply system supplies power from a first ac power source in normal condition. Once the first ac power source is abnormal or fails, the system automatically turns off the first ac power source and turns on a second ac power source with null transfer time. When the first ac power source is normal, a dc/ac power inverter is controlled to supply an approximately null current such that a mechanical switch is allowed to be closed and no circulating current is generated between the first ac power source and the dc/ac power inverter. Since the mechanical switch is continuously closed, and requires no switching operation, the backup power supply system can supply the backup power with a null transfer time.
    Type: Grant
    Filed: June 29, 2004
    Date of Patent: March 18, 2008
    Assignee: UIS Abler Electronics Co., Ltd.
    Inventors: Ya-Tsung Feng, Chin-Chang Wu, Hung-Liang Chou, Nan-Ying Shen, Kuo-Fang Huang, Yao-Jen Chang
  • Publication number: 20080062724
    Abstract: A bidirectional active power conditioner includes a DC side, a bidirectional DC/DC power converter, a DC/AC inverter and an AC side. The DC side electrically connects with a DC source while the AC side electrically connects with a load and an AC source. The bidirectional DC/DC power converter is controlled via high-frequency pulse width modulation (PWM) switching so as to generate a predetermined DC voltage or DC current while the DC/AC inverter is controlled to convert the predetermined DC voltage or DC current into a predetermined AC voltage or AC current.
    Type: Application
    Filed: June 11, 2007
    Publication date: March 13, 2008
    Inventors: Ya-Tsung FENG, Chin-Chang WU, Hung-Liang CHOU
  • Publication number: 20070290668
    Abstract: A maximum power point tracking method, applied to a tracking device, employs a DC/DC converter connecting with a solar cell array, and including a controller actuating the DC/DC converter to perform an active resistance characteristic; a maximum power point tracking circuit adjusting the active resistance of the DC/DC converter; monitoring a change of an output power of the solar cell array in determining a direction for adjusting the active resistance of the DC/DC converter; and the maximum power point tracking circuit repeatedly adjusting the active resistance of the DC/DC converter. If the change of the output power of the solar cell array is positive, the active resistance of the DC/DC converter is adjusted in the same direction; but, conversely, if the change of the output power of the solar cell array is negative, the active resistance of the DC/DC converter is adjusted in an opposite direction.
    Type: Application
    Filed: October 3, 2006
    Publication date: December 20, 2007
    Applicant: UIS Abler Electronics Co., Ltd.
    Inventors: Hung-Liang Chou, Wen-Jung Chiang, Chin-Chang Wu, Ya-Tsung Feng, Li-Hsiang Lai
  • Patent number: 7301787
    Abstract: An active type harmonic suppression apparatus, connected in parallel to a power feeder, supplies a compensation current for injecting into the power feeder such that a utility current of a power source is approached to a sinusoidal wave. The control circuit retrieves a load current, a utility current, an output current of the power converter, a power source voltage and a voltage of the dc power capacitor for calculating and sending a reference signal of compensation voltage to a pulse-width-modulation circuit which generates switching signals for the power converter. Furthermore, the harmonic suppression apparatus can provide a fixed or variable reactive power.
    Type: Grant
    Filed: July 11, 2005
    Date of Patent: November 27, 2007
    Assignee: UIS Abler Electronics Co., ltd.
    Inventors: Chin-Chang Wu, Hung-Liang Chou, Ya-Tsung Feng, Wen-Pin Hsu, Yao-Jen Chang