Granted Patent
Utility
US 6,624,307 · App. 10/109,434
Process for producing 2,6-dihydroxy-3,4-dialkylpyridines
Inventors:
Murugappa Vedachalam, Jon Kirk Smith
Patented Case
View Patent ↗
Granted: Sep 23, 2003
Filed: Mar 28, 2002
Inventors
Murugappa Vedachalam
Jon Kirk Smith
Assignee (at issue)
ISP INVESTMENTS LLC
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.