Patents by Inventor Back Ho LEE

Back Ho LEE 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).

  • CROSSLINKED HYALURONIC ACID, HYALURONIC ACID HYDROGEL, AND METHOD FOR PRODUCING CROSSLINKED HYALURONIC ACID AND HYALURONIC ACID HYDROGEL
    Publication number: 20220040374
    Abstract: Provided are a crosslinked hyaluronic acid product in the form of powder and a method of preparing the same, and a crosslinked hyaluronic acid hydrogel prepared using the crosslinked hyaluronic acid product in the form of powder, and a method of preparing the same. The crosslinked hyaluronic acid hydrogel according to the present disclosure exhibits excellent rheological properties, and mass production thereof is easy and quality uniformity thereof is excellent.
    Type: Application
    Filed: December 6, 2019
    Publication date: February 10, 2022
    Applicant: HANMI PHARM. CO., LTD
    Inventors: Soo Jin KIM, Se Kweon KIM, Chung Leol SHIN, Hyo Seung PARK, Yong Woo KIM, Back Ho LEE, Jun Young KIM
  • Combination of cross-linked hyaluronic acids and method of preparing the same
    Patent number: 11180576
    Abstract: Provided are a combination of cross-linked hyaluronic acids comprising: a cross-linked hyaluronic acid having an elasticity of about 50 to about 200 Pa and a viscosity of about 20 to about 100 Pa, and a cross-linked hyaluronic acid having an elasticity of about 400 to about 800 Pa and a viscosity of about 40 to about 100 Pa, and a method for preparing the same.
    Type: Grant
    Filed: June 21, 2019
    Date of Patent: November 23, 2021
    Assignee: HANMI PHARM. CO., LTD.
    Inventors: Sung Chul Choi, Hyun Il Kim, Ki Young Yang, Hyo Seung Park, Back Ho Lee
  • COMBINATION OF CROSS-LINKED HYALURONIC ACIDS AND METHOD OF PREPARING THE SAME
    Publication number: 20190315887
    Abstract: Provided are a combination of cross-linked hyaluronic acids comprising: a cross-linked hyaluronic acid having an elasticity of about 50 to about 200 Pa and a viscosity of about 20 to about 100 Pa, and a cross-linked hyaluronic acid having an elasticity of about 400 to about 800 Pa and a viscosity of about 40 to about 100 Pa, and a method for preparing the same.
    Type: Application
    Filed: June 21, 2019
    Publication date: October 17, 2019
    Applicant: HANMI PHARM. CO., LTD.
    Inventors: Sung Chul CHOI, Hyun Il KIM, Ki Young YANG, Hyo Seung PARK, Back Ho LEE
  • COMBINATION OF CROSS-LINKED HYALURONIC ACIDS AND METHOD OF PREPARING THE SAME
    Publication number: 20180215840
    Abstract: Provided are a method of preparing a cross-linked hyaluronic acid having an elasticity of about 50 to about 200 Pa and a viscosity of about 20 to about 100 Pa, including cross-linking hyaluronic acid with an epoxy-based cross-linking agent having at least two epoxy functional groups in an ethanol-containing aqueous alkaline; a method of preparing a cross-linked hyaluronic acid having an elasticity of about 400 to about 800 Pa and a viscosity of about 40 to about 100 Pa, including cross-linking the same cross-linked hyaluronic acid with the same epoxy-based cross-linking agent in an aqueous alkaline solution; and a combination of the cross-linked hyaluronic acids one having an elasticity of about 50 to about 200 Pa and a viscosity of about 20 to about 100 Pa and the other having an elasticity of about 400 to about 800 Pa and a viscosity of about 40 to about 100 Pa.
    Type: Application
    Filed: June 1, 2016
    Publication date: August 2, 2018
    Applicant: HANMI PHARM. CO., LTD.
    Inventors: Sung Chul CHOI, Hyun Il KIM, Ki Young YANG, Hyo Seung PARK, Back Ho LEE