Patents by Inventor Kee-Pyung Nahm

Kee-Pyung Nahm 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).

  • Chiral phase-transfer catalyst and method for preparing alpha-amino acid by using the same
    Patent number: 10696621
    Abstract: The present invention relates to a novel chiral phase-transfer catalyst, and a method for preparing an alpha-amino acid by using the same. According to the present invention, an alpha-amino acid of high optical purity could be synthesized in a high yield under an easy industrially applicable reaction condition by using a novel cinchona alkaloid compound as a chiral phase-transfer catalyst, and thus the present invention can be used as a key technique of the asymmetric alpha-amino acid synthesis and preparation field.
    Type: Grant
    Filed: February 6, 2017
    Date of Patent: June 30, 2020
    Inventors: Kee Pyung Nahm, Yeon Ji Lee, Bae Geun Lim, Seung A Woo, Ji Inn Oh, Won Gyoung Son
  • NOVEL CHIRAL PHASE-TRANSFER CATALYST, AND METHOD FOR PREPARING A-AMINO ACID BY USING SAME
    Publication number: 20190292133
    Abstract: The present invention relates to a novel chiral phase-transfer catalyst, and a method for preparing an alpha-amino acid by using the same. According to the present invention, an alpha-amino acid of high optical purity could be synthesized in a high yield under an easy industrially applicable reaction condition by using a novel cinchona alkaloid compound as a chiral phase-transfer catalyst, and thus the present invention can be used as a key technique of the asymmetric alpha-amino acid synthesis and preparation field.
    Type: Application
    Filed: February 6, 2017
    Publication date: September 26, 2019
    Inventors: Kee Pyung NAHM, Yeon Ji LEE, Bae Geun LIM, Seung A WOO, Ji Inn OH, Won Gyoung SON
  • Agents for the regulation of gametophytic self-incompatibility and a control method for the breakdown of gametophytic self-incompatibility using the agents
    Publication number: 20050032646
    Abstract: This invention relates to the agents for regulating gametophytic self-incompatibility (SI), which inhibit a style-specific S RNase promoting gametophytic self-incompatibility. The invention includes the agricultural composition of the agent of zinc(II) complexes and/or copper(II) complexes for the breakdown of the gametophytic SI of nearly one-half of all the families of angiosperms, including the Rosaceae (apples, pears, cherries, almonds, plums, mango, etc), the Solanaceae (tomatoes, petunia, potatoes tobacco, etc), the Scrophularaceae, and many grasses. The invention also includes a control method for regulating and suppressing gametophytic SI of a gametophytic self-incompatible plant with the agents, and a control method for the production of novel self-pollinated seeds that are produced by the regulation agents.
    Type: Application
    Filed: October 23, 2003
    Publication date: February 10, 2005
    Inventors: Kee-Pyung Nahm, Sang-Ku Yoo, Il-Kyung Chung, Il-Sun Chung