Patents Assigned to Chung Yuan Christian University
  • Patent number: 8137520
    Abstract: A chloride ion-selective electrode comprises: a reference electrode in contact with a reference solution; and a chloride ion-selective membrane as the interface of a sample and the reference solution, wherein the chloride-ion selective membrane comprises a chloride ion ionophore, a chloride ion-exchange resin, a plasticizer, and a polymer matrix.
    Type: Grant
    Filed: December 15, 2010
    Date of Patent: March 20, 2012
    Assignee: Chung Yuan Christian University
    Inventors: Chean-Yeh Cheng, Wen-Yaw Chung, Zhu-Ming Huang
  • Patent number: 8132143
    Abstract: A voltage-mode nth-order differential difference current conveyor (DDCC) and fully differential current conveyor (FDCCII)-resistor and capacitor filter structures are proposed using a new effective analytical synthesis method (ASM), a succession of innovative algebra operations until a set of simple equations are produced, which are then realized using n integrators and a constraint sub-circuitry, A new ASM can effectively carry out (i) use of all the grounded capacitors and grounded resistors, and (ii) employment of the minimum number of active and passive components and then enjoys the low sensitivities, lower parasitics, power consumption, noise, and smaller chip area leading to simultaneously achieving two important features: (i) higher output performance and (ii) lower cost, without tradeoff. Moreover, the component value variations of all the relative sensitivities have the same incremental percentage or decrement.
    Type: Grant
    Filed: June 27, 2009
    Date of Patent: March 6, 2012
    Assignee: Chung Yuan Christian University
    Inventors: Chun-Ming Chang, Shu-Hui Tu
  • Patent number: 8111404
    Abstract: A method for measuring a saturated photorefractive index and a recording time constant to correct the precision includes measuring the diffraction efficiency as a function of time for both phase matching and phase mismatching. The saturated photorefractive index and the recording time constant are verified by substitution into a theoretical formula derived from the Coupled Wave Theory. Thus, the method allows a precise determination of the dynamic range of volume holographic memories and thus their storage capacities. The same procedure can also apply to photopolymers.
    Type: Grant
    Filed: November 11, 2009
    Date of Patent: February 7, 2012
    Assignee: Chung Yuan Christian University
    Inventors: Cheng-Fu Chen, Chien-Chou Chen, Yu-Fong Tseng
  • Patent number: 8110967
    Abstract: A spherical rotary piezoelectric motor comprises a spherical rotor, a hemispherical stator, and a plurality of piezoelectric actuators. The hemispherical stator comprises an inner surface and an outer surface, wherein the inner surface forms a hemispherical hollow portion which substantially corresponds to the spherical rotor so as to contain a portion of the spherical rotor. The plurality of piezoelectric actuators is arranged on the inner surface (or the outer surface) of the hemispherical stator respectively so as to drive the hemispherical stator. The hemispherical stator generates traveling waves with a resultant elliptical motion, so the spherical rotor can be rotated accordingly with at least one degree of freedom.
    Type: Grant
    Filed: May 5, 2009
    Date of Patent: February 7, 2012
    Assignee: Chung-Yuan Christian University
    Inventors: Yung Ting, Yi-Ta Lee
  • Publication number: 20120027671
    Abstract: A hydrogen-generating material and method for generating hydrogen are provided. A plurality of metal particles and a plurality of modifier particles are mixed and then reacted with water to generate hydrogen. The metal particles are made of material including aluminum or aluminum alloy or combination thereof. The modifier particles preferably comprise titanium dioxide (TiO2) particles, and the average particle size of the modifier particles is preferably less than 25 nm.
    Type: Application
    Filed: July 28, 2010
    Publication date: February 2, 2012
    Applicant: Chung Yuan Christian University
    Inventors: HONG-WEN WANG, HSING-WEI CHUNG
  • Patent number: 8106147
    Abstract: The present invention discloses a polyimide membrane synthesized by one or more emeraldine amine-capped aniline trimer oligomers, one or more dianhydrides, and an optional diamine, whereby the weight-average molecular weight of the polyimide membrane ranges from 50,000 to 200,000, and the Young's Modulus of the polyimide membrane is equal to or more than 3 GPa.
    Type: Grant
    Filed: July 15, 2010
    Date of Patent: January 31, 2012
    Assignee: Chung Yuan Christian University
    Inventors: Jui-Ming Yeh, Kuan-Yeh Huang, Yu-Sian Jhuo, Chang-Jian Weng
  • Patent number: 8103376
    Abstract: The present invention provides a system and method for the on-machine 2-D contour measurement, employing the contour measurement, coordinate system transformation, error identification, and image matching theory in image processing field to develop the on-machine measurement of X-Y-plan manufacturing error of a micro device manufactured by a high-precision micro-device machine tool, contour error, and trace error.
    Type: Grant
    Filed: September 5, 2008
    Date of Patent: January 24, 2012
    Assignee: Chung Yuan Christian University
    Inventors: Shih-Ming Wang, Han-Jen Yu
  • Patent number: 8101670
    Abstract: The present invention discloses polymers prepared through the Diels-Alder reaction with benzoxazine groups in their main chains. Moreover, polymers with high molecular weight could be successfully prepared via this method. Furthermore, the mentioned polymers are able to undergo crosslinking reaction by heat treatment. Heat energy causes the ring-opening reaction of benzoxazine in polymer main chains to undergo crosslinking reaction, and cross-linked polymers are thereby formed with great flexibility and high crosslinking degree.
    Type: Grant
    Filed: April 21, 2009
    Date of Patent: January 24, 2012
    Assignee: Chung Yuan Christian University
    Inventors: Ying-Ling Liu, Ching-I Chou
  • Patent number: 8092208
    Abstract: A gas-assisted mold surface heating system is disclosed, which comprise: an air supply, for providing air with a flow rate larger than 300 L/min; a heater, for heating air to a temperature higher than 400° C.; a mold, configured with a mold cavity, an inlet and an outlet; and an air storage tank; wherein, the inlet is connected to the heater through a pipeline for allowing the air from the air supply to flow into the cavity after being heated by the heater and thus to be for heating up the surface of the mold cavity while the heated air is being enabled to flow out of the cavity through the outlet and into the air storage tank. With the aforesaid system, surface temperature of the mold cavity can be raised to a point higher than a glass transmission point in a short period of time.
    Type: Grant
    Filed: April 6, 2010
    Date of Patent: January 10, 2012
    Assignee: Chung Yuan Christian University
    Inventors: Shia-Chung Chen, Jen-An Chang
  • Publication number: 20110316628
    Abstract: A complimentary single-ended-input OTA-C universal filter structures in terms of integrated circuits is provided. The integrated circuit comprises a plurality of amplifiers and a plurality of capacitors. In some capacitors, one electrode is electrically connected to the positive input of its corresponding amplifier, and the other electrode can be electrically connected to an electrical source. In addition, the negative input of one amplifier is electrically connected to the negative input of another amplifier. Besides, there are a head amplifier and a tail amplifier. The output of the head amplifier is electrically connected to the negative input of the head amplifier, and the positive input of the tail amplifier can be electrically connected to an electrical source.
    Type: Application
    Filed: June 24, 2011
    Publication date: December 29, 2011
    Applicant: Chung Yuan Christian University
    Inventors: Chun-Ming CHANG, Shu-Hui Tu
  • Patent number: 8081599
    Abstract: A resource allocation with dynamic bit control to achieve the greatest fairness for all users and minimize transmission power over orthogonal frequency division multiplexing (OFDM) systems is presented. This technique can be also applied in WiMAX system.
    Type: Grant
    Filed: September 15, 2008
    Date of Patent: December 20, 2011
    Assignee: Chung Yuan Christian University
    Inventors: Tsan-Ming Wu, Szu-Liang Wang
  • Patent number: 8062751
    Abstract: The present invention discloses a method for forming a low biofouling filtration membrane. First, an ozone treatment is performed to a fluorine-based porous membrane to introduce peroxides on surface. Afterwards, a first grafting polymerization is initiated from the peroxides, and functional monomers are polymerized to introduce halide groups on surface. Finally, a second grafting polymerization is initiated from the halide groups, and macro-monomers are polymerized to introduce zwitterionic group on surface, so as to form the low biofouling filtration membrane.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: November 22, 2011
    Assignee: Chung Yuan Christian University
    Inventors: Yung Chang, Ruoh-Chyu Ruaan, Wen-Yih Chen, Akon Higuchi, Yan-Che Chiang, Juin-Yih Lai
  • Patent number: 8052415
    Abstract: The present invention relates to a coaxial cooling/heating coil structure and a mold configured with the same, in which the coaxial cooling/heating coil is comprised of: a frame, configured with a cooling channel having an inlet, provided for a cooling water to flow therein, and an outlet, provided for discharging the cooling water therefrom; and a heat-conducting coil, disposed inside the cooling channel. The coaxial cooling/heating structure is fitted to a mold to be used for enhancing the preheating efficiency of the mold while improving the time required for cooling the mold.
    Type: Grant
    Filed: December 18, 2009
    Date of Patent: November 8, 2011
    Assignee: Chung Yuan Christian University
    Inventors: Shia-Chung Chen, Jen-An Chang
  • Publication number: 20110222294
    Abstract: The invention provides a side emitting light emitting diode (LED) module which comprises a LED, a base, a lens, a reflex plane and a transparent plane wherein the base is on the LED for facing it, the lens placed on the base and is centered by the LED, the reflex plane is on the lens for refracting or transmitting lights from the lens reflexing, the outer is the transparent plane which is an extended plane from the rim of the reflex plane down to the base, both the refracting light by the reflex plane and the transmitting light by the lens sent out by the transparent plane, the final lights from the transparent plane parallel the base and sent out of the LED module.
    Type: Application
    Filed: December 24, 2009
    Publication date: September 15, 2011
    Applicant: Chung-Yuan Christian University
    Inventors: Yi-Hua Fan, Rong-Jhe Chen, Sheng-Kai Chang
  • Publication number: 20110218358
    Abstract: One embodiment of the present invention discloses a drying agent having the formula: [Mg2(BTEC)(H2O)m].nH2O, where m denotes zero or positive integer from 1 to 10, and n denotes zero or positive integer from 1 to 6. Another embodiment of the present invention provides a method for forming a drying agent.
    Type: Application
    Filed: May 11, 2010
    Publication date: September 8, 2011
    Applicant: Chung Yuan Christian University
    Inventors: Chia-Her LIN, Hsin-Kuan LIU, Tai-Hsing TSAO
  • Publication number: 20110207210
    Abstract: Provided herein are isolated or synthesized Rhopalosiphum padi virus (RhPV) nucleic acids having promotor activities, and vectors containing the isolated or synthesized RhPV nucleic acids for gene delivery in insect expression systems.
    Type: Application
    Filed: January 31, 2009
    Publication date: August 25, 2011
    Applicant: Chung Yuan Christian University
    Inventors: Tzong-Yuan Wu, Ying-Ju Chen, Chao-Yi Teng, Yi-Ting Lin, Yu-Jie Chen, Yi-Jane Wu, Seng-Chi Chen
  • Patent number: 7981264
    Abstract: The present invention discloses a method and an apparatus of the drift calibration of sensors. The method includes shifting the sensing signal and differential technology to remove the drift signal by time during a long measuring. The apparatus includes two voltage sensors and readout circuits, a signal-shifting circuit and a differential circuit, and the apparatus is used for outputting the response signal without time drifting.
    Type: Grant
    Filed: February 9, 2006
    Date of Patent: July 19, 2011
    Assignee: Chung Yuan Christian University
    Inventors: Shen-Kan Hsung, Jung-Chuan Chou, Tai-Ping Sun, Chung-We Pan, Chu-Neng Tsai
  • Patent number: 7938552
    Abstract: The present invention discloses a backlight unit having a reflecting device to enhance light directivity. The backlight unit comprises a light source module, comprising at least one light source, and a reflecting device. The reflecting device is provided to surround the light source or light source module and comprises a first surface. Besides, the first surface comprises at least two planes where every two planes are connected with an included angle more than 90 degrees and less than 180 degrees.
    Type: Grant
    Filed: June 24, 2008
    Date of Patent: May 10, 2011
    Assignee: Chung Yuan Christian University
    Inventors: Yi-Hua Fan, Rong-Jhe Chen, Yi-Lin Liao, Sheng-Kai Chang, Kai-Yin Huang
  • Patent number: 7930952
    Abstract: A toggle-type positioning platform including a first platform, a motor, a screw rod, a second platform and a linkage is provided. The motor and the screw rod are disposed on the first platform; the motor is coupled to the screw rod and suitable for driving the screw rod to rotate. The second platform is above the first platform and is suitable for moving back and forth alternately along a predetermined path, wherein an included angle exists between an extended direction of the predetermined path and the screw rod. The linkage is disposed between the first platform and the second platform, and is connected between the second platform and the screw rod. The linkage is driven by the rotation of the screw rod, to drive the second platform to move along he predetermined path. Accordingly, the positioning precision of the toggle-type positioning platform is enhanced.
    Type: Grant
    Filed: August 31, 2006
    Date of Patent: April 26, 2011
    Assignee: Chung Yuan Christian University
    Inventors: Shih-Ming Wang, Chih-Peng Yang
  • Patent number: 7929155
    Abstract: The present invention provides a method and system for on-machine 3-D depth measurement. The same image retrieving apparatus measures the first distance for the width of the similar gray-level region of cutting-surface from the first angle, and measures the second distance for the width of the similar gray-level region of cutting-surface from the first angle superimposing the second angle. The width of the similar gray-level region of cutting-surface comprises the cutting-surface and the shadow of the bottom portion of the cutting-surface. And then the cutting-surface depth is calculated according to the first angle, the second angle, the first distance, and the second distance.
    Type: Grant
    Filed: September 5, 2008
    Date of Patent: April 19, 2011
    Assignee: Chung Yuan Christian University
    Inventors: Shih-Ming Wang, Han-Jen Yu