Granted Patent
Utility
US 6,028,237 · App. 08/990,471
Synthesis of cyclopropylacetylene
Inventor:
Rodney Lawrence Parsons, Jr.
Patented Case
View Patent ↗
Granted: Feb 22, 2000
Filed: Dec 15, 1997
Inventor
Rodney Lawrence Parsons, Jr.
Assignee (at issue)
Dupont Pharmaceuticals
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.