Patents by Inventor Chao-Min Cheng

Chao-Min Cheng 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: 20150044761
    Abstract: A food safety detection device includes a xylem fiber substrate, which is configured with a sampling portion and a reaction portion. The reaction portion includes at least one chemical reagent. The sampling portion absorbs a test sample. The test sample moves on the xylem fiber substrate to the reaction portion and reacts with the chemical reagent. A manufacturing method for the food safety detection device is also disclosed. The food safety detection device is advantageous for easy operation, safety and rapid analysis.
    Type: Application
    Filed: October 27, 2014
    Publication date: February 12, 2015
    Inventors: Chen-Meng KUAN, Roger L. YORK, Robert S. LANGER, Chao-Min CHENG
  • Publication number: 20150025119
    Abstract: A method of releasing an antihypertensive agent on a plant fiber bundle is proposed. Firstly, the antihypertensive agent is fixed onto the plant fiber bundle. Then, the antihypertensive agent is fixed onto the plant fiber bundle and released in a buffer solution system. Next, fluorescence analysis of released antihypertensive agent is performed to evaluate the release efficiency of the antihypertensive agent.
    Type: Application
    Filed: August 19, 2013
    Publication date: January 22, 2015
    Applicant: National Tsing Hua University
    Inventors: Chen-Meng Kuan, Chao-Min Cheng, Robert S. Langer
  • Publication number: 20140377787
    Abstract: A three dimensional lignocellulosic detection device includes a first lignocellulosic substrate and a second lignocellulosic substrate. When the first lignocellulosic substrate is in contact with a liquid specimen through capillary effect, the sample is absorbed into the second lignocellulosic substrate through the first lignocellulosic substrate, reacts with the detecting reagent on the second lignocellulosic substrate and makes a detection test. The three dimensional lignocellulosic detection device of the present invention have inherent advantages of the lignocellulosic such as natural material, low cost, easy manipulation and capillary effect and results in a good preventive diagnostic platform. Also, users may achieve preventive disease diagnostics without spending additional time and/or money.
    Type: Application
    Filed: July 18, 2013
    Publication date: December 25, 2014
    Inventors: Chen-Meng KUAN, Robert S. LANGER, Chao-Min CHENG
  • Publication number: 20140356253
    Abstract: The present invention provides a biomedical device comprising a porous hydrophilic substrate; a hydrophobic material; a fluid inlet; two or more test zones, wherein fluid vertically flows through the porous hydrophilic substrate and then distributes into the test zones. The present invention further provides a method for making a biomedical device.
    Type: Application
    Filed: May 27, 2014
    Publication date: December 4, 2014
    Applicant: ETERNAL CHEMICAL CO., LTD.
    Inventors: Tu-Yi Wu, Chao-Min Cheng, Hsi-Kai Wang, Yen-Ting Yeh, Wei-Ming Tu
  • Publication number: 20140356252
    Abstract: A biomedical testing sheet comprises: a substrate with calligraphy paper material, wherein the substrate comprises a wax pattern layer, which is a part of a surface of the substrate coated by a waxy material, and penetrated and diffused by the waxy material, and the wax pattern layer comprises one or more carrying units for carrying one or more droplets of liquids to be measured. The lotus effect substantially prevents diffusion of the liquids and reagents on the carrying units, and reduces the required amount of liquids to be measured and the amount of agent.
    Type: Application
    Filed: May 6, 2014
    Publication date: December 4, 2014
    Applicant: National Tsing Hua University
    Inventors: Chen-Meng Kuan, Chao-Min Cheng, Kuan-Hung Chen
  • Publication number: 20140315285
    Abstract: A lignocellulosic detection device includes a lignocellulosic substrate and at least one detection reagent absorbed/coated to lignocellulosic tissue of the lignocellulosic substrate. A liquid specimen is in contact with the lignocellulosic substrate so as to be absorbed to the lignocellulosic tissue of the lignocellulosic substrate by capillary action and react with the detection reagent to achieve specimen detection. The lignocellulosic detection device of the present invention is provided with inherent advantages of the lignocellulosic substrate such as natural material, low cost, easy manipulation and capillary effect and results in a good preventive diagnosis platform. Also, users may achieve preventive disease diagnosis without spending additional time and/or money.
    Type: Application
    Filed: June 28, 2013
    Publication date: October 23, 2014
    Inventors: Chen-Meng KUAN, Hsi-Kai WANG, Kuan-Hung CHEN, Robert S. LANGER, Chao-Min CHENG
  • Publication number: 20140315224
    Abstract: A detection device applied for detecting body fluids includes a substrate and a plurality of anti-growth factor antibodies. The substrate includes at least one reaction portion. The reaction portion includes a fiber-based material. Anti-growth factor antibodies are disposed on the fiber-based material. The present invention further provides a detection strip and a detection system for detecting body fluids. The present invention is advantageous for easy operation, lower amount of reagents and rapid analysis.
    Type: Application
    Filed: June 30, 2014
    Publication date: October 23, 2014
    Inventors: Min-Yen HSU, Chung-Yao YANG, Chao-Min CHENG
  • Patent number: 8821810
    Abstract: The disclosure provides low cost, portable three-dimensional devices for performing multiplexed assays. The devices comprise at least two substantially planar layers disposed in parallel planes, wherein one of the layers is movable relative to each other parallel to the planes to permit the establishment of fluid flow communication serially between the two layers.
    Type: Grant
    Filed: February 3, 2011
    Date of Patent: September 2, 2014
    Assignee: President and Fellows of Harvard College
    Inventors: George M. Whitesides, Katherine A. Mirica, Andres W. Martinez, Chao-Min Cheng, Scott T. Phillips, Monica MascareƱas, Xinyu Liu, Xiujun Li
  • Publication number: 20140212959
    Abstract: A novel sperm quality assessment device includes a main frame and a test pad. The test pad is encircled by the main frame and includes an exposed introductory portion. The test pad has greater hydrophilicity than the main frame, and includes an MTT reagent. Therefore, the activity pattern of the colored motile sperms can be used to estimate sperm quality, such as motility. The present device has the particular advantage of using paper to reduce manufacturing cost, and is also easy to use.
    Type: Application
    Filed: April 26, 2013
    Publication date: July 31, 2014
    Applicant: NATIONAL TSING HUA UNIVERSITY
    Inventors: Koji Matsuura, Cheng-Han Tsai, Chao-Min Cheng
  • Publication number: 20140193840
    Abstract: A chromatography filter paper-based ELISA includes following steps: providing a chromatography filter paper plate provided with a plurality of independent hydrophilic regions defined by at least one hydrophobic region; immobilizing an antigen of a sample onto one of the hydrophilic regions of the chromatography filter paper plate; and detecting the antigen with an ELISA process, wherein an antibody used in the ELISA process is a monoclonal antibody. The present invention has advantages in lower amount of loaded sample, higher sensitivity and rapid analysis in comparison to conventional ELISA.
    Type: Application
    Filed: April 22, 2013
    Publication date: July 10, 2014
    Applicant: National Tsing Hua University
    Inventors: Min-Yen HSU, Keng-Hung LIN, Chao-Min CHENG
  • Publication number: 20140097560
    Abstract: A method is proposed for fabricating small-scale, curved, polymeric structures. Firstly, desired patterns are created from droplets of photocurable PDMS after using ink or wax to create the desired patterns on a flexible material such as papers or plastic films. The photocurable PDMS droplets are then activated by UV light to form a small-scale polymeric mold. Next, polymeric curved structures can be obtained at millimeter scale by casting and curing thermocurable PDMS on the mold.
    Type: Application
    Filed: January 28, 2013
    Publication date: April 10, 2014
    Applicant: NATIONAL TSING HUA UNIVERSITY
    Inventors: Ting-Ya CHANG, Chao-Min CHENG
  • Publication number: 20140099425
    Abstract: A method is proposed for fabricating small-scale, curved structures. Firstly, a calligraphy paper or filter paper is provided. Liquid-phase material droplets are applied to calligraphy paper or filter paper to form a desired pattern at a contact angle that can form convex curved small-scale structures.
    Type: Application
    Filed: September 17, 2013
    Publication date: April 10, 2014
    Applicant: National Tsing Hua University
    Inventors: Ting-Ya Chang, Chao-Min Cheng, Kuan-Hung Chen
  • Patent number: 8691162
    Abstract: A biomedical diagnostic device includes a hydrophilic layer, hydrophobic layer, and at least one test pad. The hydrophilic layer includes an exposed introductory portion adapted to introduce a test fluid, and is stacked with the hydrophobic layer with multiple access holes. At least one test pad, each of which includes a distinguishing reaction medium, is disposed in the corresponding holes that extend to contact the hydrophilic layer. The relations within the device are as follows: hydrophilicity of any of the test pads>hydrophilicity of the hydrophilic layer>hydrophilicity of the hydrophobic layer.
    Type: Grant
    Filed: February 7, 2013
    Date of Patent: April 8, 2014
    Assignee: National Tsing Hua University
    Inventors: Shang-Chi Lin, Li-Ching Chen, Chen-Meng Kuan, Fan-Gang Tseng, Chao-Min Cheng
  • Publication number: 20130034869
    Abstract: The disclosure provides low cost, portable three-dimensional devices for performing multiplexed assays. The devices comprise at least two substantially planar layers disposed in parallel planes, wherein one of the layers is movable relative to each other parallel to the planes to permit the establishment of fluid flow communication serially between the two layers.
    Type: Application
    Filed: February 3, 2011
    Publication date: February 7, 2013
    Applicant: PRESIDENT AND FELLOWS OF HARVARD COLLEGE
    Inventors: George M. Whitesides, Katherine A. Mirica, Andres W. Martinez, Chao-Min Cheng, Scott T. Phillips, Monica Mascarenas, Xinyu Liu, Xiujun Li
  • Publication number: 20120264065
    Abstract: A method of optical fabrication comprises coating a substrate with a photocuring material, controlling the application of light to the photocuring material so as to control the intensity and pattern of the light both in-plane and out of plane, and developing the photocuring material.
    Type: Application
    Filed: May 11, 2012
    Publication date: October 18, 2012
    Inventors: Chao-Min Cheng, Bin Li, Philip R. LeDuc
  • Patent number: 8192922
    Abstract: A method of optical fabrication comprises coating a substrate with a photocuring material, controlling the application of light to the photocuring material so as to control the intensity and pattern of the light both in-plane and out of plane, and developing the photocuring material.
    Type: Grant
    Filed: October 3, 2006
    Date of Patent: June 5, 2012
    Assignee: Carnegie Mellon University
    Inventors: Chao-Min Cheng, Bin Li, Philip R. LeDuc
  • Publication number: 20090233241
    Abstract: A method of optical fabrication comprises coating a substrate with a photocuring material, controlling the application of light to the photocuring material so as to control the intensity and pattern of the light both in-plane and out of plane, and developing the photocuring material.
    Type: Application
    Filed: October 3, 2006
    Publication date: September 17, 2009
    Inventors: Chao-min Cheng, Bin Li, Philip R LeDuc