Granted Patent
Utility
US 6,747,166 · App. 10/220,697
Process for preparing carotenoid polyene chain compounds and intermediates for preparing the same
Inventors:
Sangho Koo, Minkoo Ji
Patented Case
View Patent ↗
Granted: Jun 8, 2004
Filed: Aug 30, 2002
Inventors
Sangho Koo
Minkoo Ji
Assignees (at issue)
Sangho Koo
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.