Granted Patent
Utility
US 6,649,775 · App. 10/200,174
Process of lactonization in the preparation of statins
Inventors:
Kwang Hyeg Lee, Jin-Wan Kim, Myeong Sik Yoon, Kwang Do Choi, Sang Ho Lee, Hong Suk Cho
Patented Case
View Patent ↗
Granted: Nov 18, 2003
Filed: Jul 23, 2002
Inventors
Kwang Hyeg Lee
Jin-Wan Kim
Myeong Sik Yoon
Kwang Do Choi
Sang Ho Lee
Hong Suk Cho
Assignee (at issue)
Cheiljedang Corp.
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.