Patents by Inventor Jou-Wen Chen

Jou-Wen 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: 20200337835
    Abstract: A medical implant has a center axis and includes first and second flexible waved strands disposed around the center axis. The second flexible waved strand is in spatial communication with the first flexible waved strand to form a plurality of first unit shapes and a plurality of second unit shapes. Therein, the first unit shapes and the second unit shapes are staggered around the center axis. The first unit shapes are coupled to the second unit shapes to cause the first and second flexible waved strands to move substantially along the center axis. The first and second flexible waved strands together define a self-anchoring configuration in a radial direction perpendicular to the center axis so that a ratio of a von Mises stress to an axial displacement of the medical implant during an implant compression of the medical implant is greater than 0.1 and less than 30.
    Type: Application
    Filed: April 29, 2020
    Publication date: October 29, 2020
    Inventors: Sheng-Chung Cheng, Han-Tang Liu, Chung-Chih Cheng, Jou-Wen Chen, Yong-Guei Chen, Chih-Chiang Yang, Wei-Ting Huang, Yao-Chung Yu, Ting-Shu Lin
  • Patent number: 9581579
    Abstract: The present invention provides a quick extraction kit adapted to a procedure of detecting pesticide residues in agricultural products and a method of obtaining a primary test liquid from an agricultural sample by the quick extraction kit. The quick extraction kit comprises a pipe, a first powder mixture layer and a second powder mixture layer. The method of taking primary test liquid is performed as follows. First, obtaining fragments of the agricultural sample. Second, adding an extraction solvent into the fragments of the agricultural sample to obtain a sample solution. Third, adding the sample solution into the pipe. Finally, driving the sample solution to export from the pipe to become the primary test liquid. The quick extraction kit and the method solve the problem of being unable to quickly obtain the result of detecting pesticide residues.
    Type: Grant
    Filed: August 26, 2014
    Date of Patent: February 28, 2017
    Assignee: AGRICULTURAL CHEMICALS AND TOXIC SUBSTANCES RESEARCH INSTITUTE, COUNCIL OF AGRICULTURE, EXECUTIVE YUAN
    Inventors: Shao-Kai Lin, Wei-Chen Chuang, Jou-Wen Chen
  • Publication number: 20160018305
    Abstract: The present invention provides a quick extraction kit adapted to a procedure of detecting pesticide residues in agricultural products and a method of obtaining a primary test liquid from an agricultural sample by the quick extraction kit. The quick extraction kit comprises a pipe, a first powder mixture layer and a second powder mixture layer. The method of taking primary test liquid is performed as follows. First, obtaining fragments of the agricultural sample. Second, adding an extraction solvent into the fragments of the agricultural sample to obtain a sample solution. Third, adding the sample solution into the pipe. Finally, driving the sample solution to export from the pipe to become the primary test liquid. The quick extraction kit and the method solve the problem of being unable to quickly obtain the result of detecting pesticide residues.
    Type: Application
    Filed: August 26, 2014
    Publication date: January 21, 2016
    Inventors: Shao-Kai LIN, Wei-Chen CHUANG, Jou-Wen CHEN
  • Patent number: 8679116
    Abstract: An external bone fixing member includes an external reconstruction plate to replace the conventional large external support frame to reduce the volume of the external fixing member and the external bone fixing member is cooperated with a screw which is angle adjustable so as to meet requirements of fixation of the fractured bones (limb bones) at different positions or comminuted fractures. The use of the screw is further cooperated with the reconstruction plate to reinforce the stability of the connection between the reconstruction plate and the screw to prevent the screw from withdrawing, moving, angle changing or movement of the reconstruction plate.
    Type: Grant
    Filed: June 7, 2012
    Date of Patent: March 25, 2014
    Assignee: National Yang-Ming University
    Inventors: Cheng-Kung Cheng, Chan-Tsung Yang, Yu-Shu Lai, Jou-Wen Chen
  • Publication number: 20130253511
    Abstract: An external bone fixing member includes an external reconstruction plate to replace the conventional large external support frame to reduce the volume of the external fixing member and the external bone fixing member is cooperated with a screw which is angle adjustable so as to meet requirements of fixation of the fractured bones (limb bones) at different positions or comminuted fractures. The use of the screw is further cooperated with the reconstruction plate to reinforce the stability of the connection between the reconstruction plate and the screw to prevent the screw from withdrawing, moving, angle changing or movement of the reconstruction plate.
    Type: Application
    Filed: June 7, 2012
    Publication date: September 26, 2013
    Inventors: Cheng-Kung Cheng, Chan-Tsung Yang, Yu-Shu Lai, Jou-Wen Chen