Patents Assigned to Chung Yuan Christian University
  • Patent number: 9176040
    Abstract: An apparatus and a method for measuring fluid viscosity are revealed. An inlet end of a container is larger than an outlet end of the container. A fluid flows through the outlet end at a flow rate. A volume of the fluid flowing out of the outlet end is measured by a graduated cylinder while the time taken for the fluid to flow through the outlet end is measured by a timer. The flow rate is associated with the volume and the time of the fluid and the viscosity of the fluid is obtained according to a density and a pressure gradient of the fluid, an outlet end radius and the flow rate. The apparatus has simple structure, easy operation and maintenance. Moreover, less space is required and the apparatus cost is low. Therefore, the testability is improved, the measurement time is reduced, and the convenience in use is enhanced.
    Type: Grant
    Filed: July 26, 2011
    Date of Patent: November 3, 2015
    Assignee: Chung Yuan Christian University
    Inventors: Huei Chu Weng, Yuan Kai Kao
  • Patent number: 9160639
    Abstract: A network flow abnormality detection system and method for detecting at least one network packet to determine whether a flow condition of the network packet is abnormal. The network packet includes L bit data element values. The method is fetching M data element values in above-mentioned L bit data element values by data element value fetch unit, wherein M is an odd number and larger than 1; N parallel processing units receive and process above-mentioned M data element values; comparison module compares above-mentioned M data element values and a standard threshold to generate M comparison result values; sum unit sums above-mentioned M comparison result values to obtain a comparison sum value; determination unit compares the comparison sum value and an abnormality threshold, wherein when the comparison sum value is larger than the abnormality threshold, the determination unit determines the flow condition is abnormal.
    Type: Grant
    Filed: February 8, 2013
    Date of Patent: October 13, 2015
    Assignee: Chung Yuan Christian University
    Inventors: Yu-Kuen Lai, Chun-Chieh Lee, Yi-Chun Liao
  • Patent number: 9133512
    Abstract: This invention discloses systems and methods for determining the sequence of amino acids in a short peptide chain that constructs a protein. The protein is firstly hydrolyzed to various short peptides and amino acid enantiomers. Then, the systems and method are used to separate the short peptides and the amino acid enantiomers, identify qualitatively each of the amino acid enantiomers, and obtain the molecular mass signal for each of the peptides. After that, the identified amino acid enantiomers are used to construct any possible short peptides in an order from the smallest molecular weight dipeptide to higher molecular weight short peptides, and the correct short peptides is confirmed by matching the molecular weight obtained from the mass spectrometry measurement, then, the short peptides are combined to give a large peptide. The process is continued until the whole amino acid sequence of the peptide chain of protein can be determined.
    Type: Grant
    Filed: March 25, 2013
    Date of Patent: September 15, 2015
    Assignee: Chung Yuan Christian University
    Inventors: Chean-Yeh Cheng, Li-Te Yu
  • Publication number: 20150197690
    Abstract: A phosphor material is provided which having the chemical formula is (Ln1-x-y-zCex)3Al5O12-y-zCyNz, wherein Ln is one or more metals selected from Y, La, Pr, Nd, Eu, Gd, Tb, Dy, Yb, Er, Sc, Mn, Zn, Cu, Ni and Lu, and 0.01?x?0.3, 0?y?0.3, and 0.001?z?0.3. Before the sintering process with high temperature is performed, the different kinds of nitrogen source or the combination of nitrogen source and carbon source thereof is added into the synthesized phosphor to provide carbon atom (C) and nitrogen atom (N) that is doped into the phosphor material, in which the nitrogen source includes an organic and an inorganic nitrogen compound. The nitrogen source is added in addition to substitute oxygen atom and to perform doping process.
    Type: Application
    Filed: March 18, 2014
    Publication date: July 16, 2015
    Applicant: Chung Yuan Christian University
    Inventors: Wei-Jen Liu, Pin-Chun Lin
  • Patent number: 9074974
    Abstract: An apparatus for measuring viscosity includes a container in which an inlet radius of an inlet end is larger than an outlet radius of an outlet end. A fluid with a flow velocity is placed in the container. The fluid has a density value and a pressure gradient value. A pressure controller for controlling the pressure gradient value of the fluid is connected to the inlet end and the outlet end. A flow meter measures the flow velocity. A viscosity of the fluid is correlated with the density value, the pressure gradient value, the inlet radius, the outlet radius and the flow velocity. After being applied to various fluids, the present invention improves testability. Moreover, the measurement time is reduced due to simple structure. The maintenance is easy and the operation is not complicated. Furthermore, less space is required, the cost is down and the measurement error is reduced.
    Type: Grant
    Filed: July 26, 2011
    Date of Patent: July 7, 2015
    Assignee: Chung Yuan Christian University
    Inventors: Huei Chu Weng, Yuan Kai Kao
  • Patent number: 9068056
    Abstract: Disclosed is layered double hydroxides (LDH) used to catalyze the polymerization of polyethylene terephthalate (PET). The LDH of a catalyst amount may efficiently reduce the PET polymerization period and further be uniformly blended into the PET product to form composites. Compared with the pure PET, the composite including LDH has better properties such as mechanical properties, linear expansion coefficient, barrier, thermal stability, and transparency. In addition, the LDH in the composite is safer than conventional heavy metal catalysts, especially when applied to food or drink packages.
    Type: Grant
    Filed: August 18, 2010
    Date of Patent: June 30, 2015
    Assignee: Chung Yuan Christian University
    Inventors: Tsung-Yen Tsai, Shao-Wen Lu, Wei-Chuan Shiu, Syuan-Ci Su, Tzu-Fang Chen, Chao-Chen Hsu
  • Patent number: 9065298
    Abstract: The configurations of photovoltaic system and methods thereof are provided. The proposed photovoltaic system includes a PI-INC MPPT controller using a variable-frequency constant-duty (VFCD) control and guided by an Ipv-Vpv curve and a Ppv-Vpv curve.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: June 23, 2015
    Assignees: Chung Yuan Christian University, Amicord Corp.
    Inventors: Guan-Chyun Hsieh, Hung-I Hsieh, Chun-Kong Chan
  • Patent number: 9040273
    Abstract: A simple, highly efficient, and environmentally friendly method of immobilizing macromolecules, particularly the biomolecules, to a solid carrier and thus forming a bioreactor, including the following steps: (1) providing the biomolecule and a leading molecule, and linking the biomolecule and the leading molecule by microwave to form an adsorbent; (2) providing a porous support material, and mixing the porous support material and the adsorbent to form a mixture; (3) treating the mixture by a vortex process such that the adsorbent being adsorbed and immobilized on the porous support material to form a bioreactor for biological reactions and biocatalysis; and the bioreactor can be further used for constructing a biological reaction system via incorporating a buffer solution and a ligand.
    Type: Grant
    Filed: December 24, 2013
    Date of Patent: May 26, 2015
    Assignee: Chung Yuan Christian University
    Inventors: Hsi-Ya Huang, Wan-Ling Liu, Chia-Her Lin, Sheng-Han Lo, Tadena Brenda Singco, Chun-Chuen Yang
  • Patent number: 9023679
    Abstract: The present invention provides a preparation method for organic solar cells having conductive nanorods. In the process of solar cells, the present invention etches the indium-tin-oxide layer, which used as the anode, using etching fluid and forms the structure of the conductive nanorods thereon. Thereby, the distance of the holes in the active layer conducted to the anode is shorted. Besides, the light scattering or the transmittivity of the indium-tin-oxide layer is increased, which improves the efficiency of photoelectric conversion in organic solar cells.
    Type: Grant
    Filed: June 27, 2013
    Date of Patent: May 5, 2015
    Assignee: Chung Yuan Christian University
    Inventors: Yu-Chiang Chao, Fu-Min Chan
  • Patent number: 9022943
    Abstract: A method for detecting vascular sclerosis is revealed. Firstly set a cuff on a human hand. Then inflate the cuff and later deflate the cuff. Next measure a pressure of the cuff and generate a pressure sensing signal. Process the pressure sensing signal to generate a processed signal and convert the processed signal. Then calculate a systolic pressure and a diastolic pressure according to the converted processed signal and also obtain a vasodilation constant. Thus a hardening of blood vessels is detected according to the vasodilation constant.
    Type: Grant
    Filed: March 3, 2010
    Date of Patent: May 5, 2015
    Assignee: Chung Yuan Christian University
    Inventors: Wei-Chih Hu, Liang-Yu Shyu, Yuan-Ta Shih, Yi-Jung Sun, Chen-Huan Chen, Hao-Min Cheng
  • Patent number: 9016678
    Abstract: A dual-toggle-type mobile platform structure comprises a base, a motor, a ball screw, a linear slide, a first toggle link rod, a second toggle link rod, a guide rail and a work platform. The second toggle link rod has an end coupled to the first toggle link rod and the other end coupled to the work platform. A connecting position of the second toggle link rod and the first toggle link rod is designed with an optimal configuration to provide a smaller footprint than the conventional dual-toggle-type mobile platform structure, and the advantages of a larger stroke of the work platform and a smaller feed resolution difference, and the structure serves as a reference of an optimal manufacturing area.
    Type: Grant
    Filed: April 25, 2012
    Date of Patent: April 28, 2015
    Assignee: Chung Yuan Christian University
    Inventors: Shih-Ming Wang, Yan-Ting Chen
  • Patent number: 9008816
    Abstract: A build up edge monitoring method is provided for performing online real-time detection and suppression of abnormal build up edges of cutters occurred in a CNC manufacturing process. Signal variation analysis and fast Fourier transform are used for analyzing signals and establishing an algorithm of diagnosing build up edges to improve the efficiency and reliability of the cutting abnormality diagnostics. A vibration acceleration signal is captured and filtered to a frequency exceeding 1.1 times of a blade passing frequency, and an occurrence of accumulated chips is determined according to a sudden increase of the vibration acceleration and whether the main vibration frequency of the current vibration signal determined by a fast Fourier transform analysis matches with the frequency of the build up edge characteristic, and a shutdown instruction is issued to a CNC controller to shut down a cutting machine.
    Type: Grant
    Filed: April 25, 2012
    Date of Patent: April 14, 2015
    Assignee: Chung Yuan Christian University
    Inventors: Shih-Ming Wang, Chien-Da Ho
  • Patent number: 9008822
    Abstract: An online real-time cutter breakage monitoring method uses a plurality of signals generated in three consecutive time periods by a vibration acceleration during a cutting process conducted by a CNC machine tool, and compares a difference between a maximum value of signals in each time period and an average value of the signals and a difference between the average value of signals thereafter and an idling critical value to output a first cutter breakage signal and a second cutter breakage signal simultaneously and determine the occurrence of a cutter breakage and shut down the CNC machine tool immediately to improve the determination speed and accuracy, so as to avoid unnecessary shutdowns or hindering the manufacturing flow.
    Type: Grant
    Filed: April 25, 2012
    Date of Patent: April 14, 2015
    Assignee: Chung Yuan Christian University
    Inventors: Shih-Ming Wang, Chien-Da Ho
  • Patent number: 9008823
    Abstract: A cutter chatter monitoring method comprises the steps of capturing a cutting vibration acceleration signal; dividing the cutting vibration acceleration signal in each predetermined time period into a plurality of segments; determining whether the vibration acceleration signal of each segment is increased by a multiple greater than a threshold value; performing a Fast Fourier Transform of the cutting vibration acceleration signal in each predetermined time period; calculating a vibration frequency; determining whether the vibration frequency of the cutting vibration acceleration signal is a multiple of a cutter passing frequency; and increasing a main shaft rotating speed of a cutter to avoid cutter chatters if both aforementioned conditions are satisfied.
    Type: Grant
    Filed: April 25, 2012
    Date of Patent: April 14, 2015
    Assignee: Chung Yuan Christian University
    Inventors: Shih-Ming Wang, Chien-Da Ho
  • Patent number: 8980232
    Abstract: A dental care product comprises an orally acceptable carrier or excipient, and a bacterial resistance copolymer, which comprises a zwitterionic block and a charged anchoring block, wherein the anchoring block binds to tooth surfaces by electrostatic attraction, and the zwitterionic block extends outwardly to reduce the attachment of bacteria to tooth surfaces.
    Type: Grant
    Filed: November 23, 2010
    Date of Patent: March 17, 2015
    Assignee: Chung Yuan Christian University
    Inventors: Yung Chang, Yu-Ju Shih, Bor-Shiunn Lee, Ruoh-Chyu Ruaan, Da-Ming Wang, Juin-Yih Lai
  • Patent number: 8974770
    Abstract: The present invention discloses a method for forming a nano-bubble. The forming method is different from the oil-water emulsion reaction in the prior art. The method comprises: taking an inorganic particle as a nucleus and performing a polymer coating process to coat at least one first polymer on the surface of the nucleus to form an organic/inorganic composite particle; then removing the nucleus of the organic/inorganic composite particle by way of the dissolution of a first solvent to form an impregnated nano-particle; performing a freeze-drying process to remove the first solvent to have the impregnated nano-particle form a hollow nano-particle; and finally dissolving the hollow nano-particle in a second solvent to form the nano-bubble.
    Type: Grant
    Filed: April 15, 2009
    Date of Patent: March 10, 2015
    Assignee: Chung Yuan Christian University
    Inventors: Walter H. Chang, Cheng-An Lin, Chih-Hsien Lee, Chih-Kuang Yeh
  • Patent number: 8963534
    Abstract: A triaxial piezoelectric sensor includes a PVDF layer, a first line layer, and a second line layer. The PVDF layer has multiple first electrodes and multiple second electrodes. Each first electrodes corresponds to each second electrodes for forming directions of polarization along the X-Y-Z axes. The first line layer has multiple first electrical connection portions and multiple first signal lines. Each first electrical connection portions corresponds to each first electrodes. The second line layer has multiple second electrical connection portions and multiple second signal lines. Each second electrical connection portions corresponds to each second electrodes. The PVDF layer is sandwiched between the first line layer and the second line layer. When an external force is applied to the PVDF layer, the first signal lines and the second signal lines transmit electrical signals according to the deformation of the PVDF layer.
    Type: Grant
    Filed: April 4, 2013
    Date of Patent: February 24, 2015
    Assignee: Chung-Yuan Christian University
    Inventors: Yung Ting, Sheuan-Perng Lin, Hariyanto Gunawan
  • Patent number: 8937426
    Abstract: A manufacturing method of polarizing polyvinylidene fluoride (PVDF) piezoelectric film without metalized electrode includes providing a polyvinylidene fluoride (PVDF) piezoelectric film that is stretched into ? phase; providing two glass substrates having an indium tin oxide (ITO) layer respectively, wherein the PVDF piezoelectric film is located between the two glass substrates, and the two ITO layers are coated located separately on top of and below the PVDF piezoelectric film; and imposing a DC electric field onto two ITO layers, wherein the DC electric field of polarization is 400 to 900 kV/cm approximately.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: January 20, 2015
    Assignee: Chung-Yuan Christian University
    Inventors: Yung Ting, Sheuan-Perng Lin, Hariyanto Gunawan
  • Patent number: 8933173
    Abstract: This invention discloses a surface anti-biomolecule agent for an artificially or naturally charged substrate. The anti-biomolecule agent comprises a copolymer employing anchoring blocks or domains to binds sites of the substrate via electrostatic attractive force, and employing zwitterionic blocks or domains extended outwardly to reduce the attachment of biomolecules to the substrate.
    Type: Grant
    Filed: November 23, 2010
    Date of Patent: January 13, 2015
    Assignee: Chung Yuan Christian University
    Inventor: Yung Chang
  • Patent number: 8924900
    Abstract: An analytical synthesis method (ASM) for designing a higher-order voltage-mode operational trans-resistance amplifier and capacitor (OTRA-C) based filter is disclosed. A decomposition of a complicated nth-order transferring a function is converted into a set of equations corresponding to a set of sub-circuitries. Then, a circuit structure is constructed by combining said sub-circuitries.
    Type: Grant
    Filed: April 11, 2013
    Date of Patent: December 30, 2014
    Assignee: Chung Yuan Christian University
    Inventors: Chun-Ming Chang, Shu-Hui Tu