Patents by Inventor Hwa-Chang Liu

Hwa-Chang Liu 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).

  • KIT FOR ISOLATION OF PLATELET-RICH PLASMA AND THE METHOD USING THE SAME
    Publication number: 20220118441
    Abstract: Provided herein is a kit for isolation of platelet-rich plasma, comprising a first isolation tube and a second isolation tube. The first isolation tube comprises a first opening and a second opening, and the second isolation tube comprises a first portion, a second portion, and a filter; wherein the first portion has a third opening, the filter is disposed between the first portion and the second portion, the second opening has a diameter in a range of 1 to 5 mm and the filter has a pore size in a range of 1.5 to 4 ?m.
    Type: Application
    Filed: October 15, 2020
    Publication date: April 21, 2022
    Applicant: KARTIGEN BIOMEDICAL INC.
    Inventors: Hwa-Chang Liu, Feng-Huei Lin, Chun-Che Yen
  • Surgical grafts for repairing chondral defects
    Patent number: 8574614
    Abstract: An implant containing a collagen matrix embedded with chondrocyte-like cells, its use in repairing a chondral defect, and a method of preparing the implant.
    Type: Grant
    Filed: February 4, 2010
    Date of Patent: November 5, 2013
    Inventors: Hwa-Chang Liu, Feng-Huei Lin, Shing-Mou Lee, Chun-Che Yen
  • SURGICAL GRAFTS FOR REPAIRING CHONDRAL DEFECTS
    Publication number: 20110189254
    Abstract: An implant containing a collagen matrix embedded with chondrocyte-like cells, its use in repairing a chondral defect, and a method of preparing the implant.
    Type: Application
    Filed: February 4, 2010
    Publication date: August 4, 2011
    Inventors: Hwa-Chang Liu, Feng-Huei Lin, Shing-Mou Lee, Chun-Che Yen
  • System and method for measuring coefficient variance of resonance frequency of musculoskeletal system
    Publication number: 20060229534
    Abstract: The present invention discloses system and method for measuring coefficient variance of resonance frequency of musculoskeletal system. In this regards, the system comprises a signal generation module, a signal retrieval module, and a signal analysis module. The purpose of the system is to measure resonance frequencies of a musculoskeletal system which implanted with an arthroplasty in order to form a statistical sampling space of resonance frequencies. Therefore a coefficient variance of the statistical sampling space of resonance frequencies can be derived. Consequently, the magnitude of this coefficient variance is used for determining whether the implated arthroplasty loose.
    Type: Application
    Filed: March 29, 2005
    Publication date: October 12, 2006
    Inventors: Walter Chang, Chun-Hsiung Shih, Hwa-Chang Liu, Wen-Jui Huang