Patents by Inventor KATHERINE PARK

KATHERINE PARK 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).

  • Process for extracting natural hydroxyaptite granules from bovine bone
    Patent number: 9610381
    Abstract: A process is for extracting natural hydroxyapatite from bone in order to make granules for a bone graft. The process involves soaking and boiling raw bone cubes in deionized water. Soaking and boiling removes lipids, blood components, and proteins and creates bone cubes. Next, washing the bone cubes in deionized water and drying the bone cubes. Then, segregating cancellous bone cubes with densified porous structure from those without densified porous structure. After that, soaking the cancellous bone cubes with densified porous structure in a solution of sodium hydroxide and a solution of hydrogen peroxide. Next, washing the cancellous bone cubes with densified porous structure in deionized water and drying the bone cubes. Then, sintering the cancellous bone cubes with densified porous structure. After that, fracturing the cancellous bone cubes with densified porous structure into the granules for the bone graft.
    Type: Grant
    Filed: October 8, 2013
    Date of Patent: April 4, 2017
    Assignee: SIGMAGRAFT, INC.
    Inventors: Seung Hyun Lee, Yuni Pai, Katherine Park, Dae Kyu Chang
  • PROCESS FOR EXTRACTING NATURAL HYDROXYAPTITE GRANULES FROM BOVINE BONE
    Publication number: 20150098875
    Abstract: A process is for extracting natural hydroxyapatite from bone in order to make granules for a bone graft. The process involves soaking and boiling raw bone cubes in deionized water. Soaking and boiling removes lipids, blood components, and proteins and creates bone cubes. Next, washing the bone cubes in deionized water and drying the bone cubes. Then, segregating cancellous bone cubes with densified porous structure from those without densified porous structure. After that, soaking the cancellous bone cubes with densified porous structure in a solution of sodium hydroxide and a solution of hydrogen peroxide. Next, washing the cancellous bone cubes with densified porous structure in deionized water and drying the bone cubes. Then, sintering the cancellous bone cubes with densified porous structure. After that, fracturing the cancellous bone cubes with densified porous structure into the granules for the bone graft.
    Type: Application
    Filed: October 8, 2013
    Publication date: April 9, 2015
    Applicant: SIGMAGRAFT, INC.
    Inventors: SEUNG HYUN LEE, YUNI PAI, KATHERINE PARK, DAE KYU CHANG