Granted Patent
Utility
US 6,727,299 · App. 10/088,186
Aromatic polysulfide and an asphalt composition containing the same
Inventor:
Kyung S. Shim
Patented Case
View Patent ↗
Granted: Apr 27, 2004
Filed: Jul 25, 2002
Inventor
Kyung S. Shim
Assignee (at issue)
Markpro 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.