Patents by Inventor Geun Gho Lim

Geun Gho Lim 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).

  • Method for preparing dipeptidyl peptidase-IV inhibitor and intermediate
    Patent number: 9249109
    Abstract: The present invention relates to an improved method for preparing dipeptidyl peptidase-IV inhibitor intermediates. The present invention is able to reduce preparation costs by using low cost reagents on reaction and is able to be used in mass production by improving yield.
    Type: Grant
    Filed: October 3, 2014
    Date of Patent: February 2, 2016
    Assignee: DONG-A PHARMACEUTICAL CO., LTD.
    Inventors: Woo Young Kwak, Heung Jae Kim, Jong Pil Min, Tae Hyun Yoon, Moohi Yoo, Geun Gho Lim, Sun Ki Chang
  • Preparation method of intermediate of sitagliptin
    Patent number: 9006436
    Abstract: The present invention provides a method which enables the simple, economical and high-yield production which is a key intermediate of antidiabetic drug Januvia.
    Type: Grant
    Filed: January 18, 2012
    Date of Patent: April 14, 2015
    Assignee: ST Pharm Co., Ltd.
    Inventors: Geun Gho Lim, Sun Ki Chang, Chang Ho Byeon
  • METHOD FOR PREPARING DIPEPTIDYL PEPTIDASE-IV INHIBITOR AND INTERMEDIATE
    Publication number: 20150025241
    Abstract: The present invention relates to an improved method for preparing dipeptidyl peptidase-IV inhibitor and intermediate. The present invention is able to reduce preparation costs by using low cost reagents on reaction and is able to be used in mass production by improving yield.
    Type: Application
    Filed: October 3, 2014
    Publication date: January 22, 2015
    Inventors: Woo Young KWAK, Heung Jae KIM, Jong Pil MIN, Tae Hyun YOON, Moohi YOO, Geun Gho LIM, Sun Ki CHANG
  • PREPARATION METHOD OF INTERMEDIATE OF SITAGLIPTIN
    Publication number: 20140005394
    Abstract: The present invention provides a method which enables the simple, economical and high-yield production which is a key intermediate of antidiabetic drug Januvia.
    Type: Application
    Filed: January 18, 2012
    Publication date: January 2, 2014
    Applicant: ST PHARM CO., LTD
    Inventors: Geun Gho Lim, Sun Ki Chang, Chang Ho Byeon
  • METHOD FOR PREPARING DIPEPTIDYL PEPTIDASE-IV INHIBITOR AND INTERMEDIATE
    Publication number: 20120016125
    Abstract: The present invention relates to an improved method for preparing dipeptidyl peptidase-IV inhibitor and intermediate. The present invention is able to reduce preparation costs by using low cost reagents on reaction and is able to be used in mass production by improving yield.
    Type: Application
    Filed: March 30, 2010
    Publication date: January 19, 2012
    Applicant: DONG-A PHARMACEUTICAL. CO., LTD
    Inventors: Woo Young Kwak, Heung Jae Kim, Jong Pil Min, Tae Hyun Yoon, Moohi Yoo, Geun Gho Lim, Sun Ki Chang