Granted Patent
Utility
US 5,969,185 · App. 09/103,692
Process for making phenolic ketones
Inventor:
Sang I. Kang
Patented Case
View Patent ↗
Granted: Oct 19, 1999
Filed: Jun 24, 1998
Inventor
Sang I. Kang
Assignee (at issue)
Henkel Limited
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.