Granted Patent
Utility
US 6,429,319 · App. 09/767,668
Continuous process for the production of optically pure (S)-beta-hydroxy-gamma-butyrolactone
Inventors:
Byong-Sung Kwak, Ki Nam Chung, Tae Yun Kim, Ki-Ho Koh, Jin Woong Kim, Choon-Gil Kim
Patented Case
View Patent ↗
Granted: Aug 6, 2002
Filed: Jan 22, 2001
Inventors
Byong-Sung Kwak
Ki Nam Chung
Tae Yun Kim
Ki-Ho Koh
Jin Woong Kim
Choon-Gil Kim
Assignee (at issue)
SK HOLDINGS CO., LTD.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.