Patents by Inventor Hak R. Kim

Hak R. Kim 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 producing aclacinomycins A, B, Y using Strepomyces lavendofoliae DKRS
    Patent number: 5484712
    Abstract: Disclosed herein are a novel strain of Streptomyces and a method for the production of aclacinomycins A, B, Y and aglycone thereof by cultivating the same. Streptomyces lavendofoliae DKRS(KCTC 0092BP) of the present invention is capable of producing aclacinomycins A, B, Y and aglycone with higher yield. Further, it is possible to selectively produce aclacinomycin A or Y by adjusting pH of the cultured broth of Streptomyces lavendofoliae DKRS to 4.4 or 4.6 with acetate buffer or hydrochloric acid, respectively.
    Type: Grant
    Filed: January 6, 1995
    Date of Patent: January 16, 1996
    Assignees: Dongkook Pharmaceutical Co. Ltd., Ki Beom Kwon
    Inventors: Won T. Cho, Wan S. Kim, Myung K. Kim, Jin K. Park, Hak R. Kim, Sang K. Rhee, A. G. Domracheva, T. B. Panichkina, L. A. Saburoba, L. M. Nobikoba, Y. E. Bartochevichi
  • S. lavendofoliae DKRS cell culture producing anti-tumor aclacinomycins A, B, Y and aglycones
    Patent number: 5468637
    Abstract: Disclosed herein are a novel strain of Streptomyces and a method for the production of aclacinomycins A, B, Y and aglycone thereof by cultivating the same. Streptomyces lavendofoliae DKRS (KCTC 0092BP) of the present invention is capable of producing aclacinomycins A, B, Y and aglycone with higher yield. Further, it is possible to selectively produce aclacinomycin A or Y by adjusting pH of the cultured broth of Streptomyces lavendofoliae DKRS to 4.4 or 4.6 with acetate buffer or hydrochloric acid, respectively.
    Type: Grant
    Filed: February 4, 1994
    Date of Patent: November 21, 1995
    Assignees: Dongkook Pharmaceutical Co., Ltd., Ki Beom Kwon
    Inventors: Won T. Cho, Wan S. Kim, Myung K. Kim, Jin K. Park, Hak R. Kim, Sang K. Rhee, A. G. Domracheva, T. B. Panichkina, L. A. Saburoba, L. M. Nobikoba, Y. E. Bartochevichi
  • Method and an apparatus for transmitting/receiving signals in a video phone
    Patent number: 5204893
    Abstract: A method and an apparatus for transmitting and receiving a voice signal simultaneously with a video signal via a single transmission line in a video phone. The apparatus comprises video signal receiving means for discriminating if a carrier frequency in the video signal being sent via the transmission line from a counterpart is which of a second frequency or a third frequency set within a frequency band of transmission line, demodulating the video signal with one of the second and third frequencies depending upon the discriminated result, and outputting the demodulated video signal to a displaying monitor; and video signal transmitting means for inputting the video signal from a self-camera, modulating the video signal with the other of the second and third frequencies and outputting the modulated video signal to the transmission line.
    Type: Grant
    Filed: May 22, 1991
    Date of Patent: April 20, 1993
    Assignee: Gold Star Co., Ltd.
    Inventors: Hyun J. Choi, Hak R. Kim