Granted Patent
Utility
US 4,709,063 · App. 06/894,615
Preparation of 2-halo-5-methylpyridines from 4-methyl-4-pentene derivatives
Inventors:
Richard V. Nelson, John F. Stephen
Patented Case
View Patent ↗
Granted: Nov 24, 1987
Filed: Aug 8, 1986
Inventors
Richard V. Nelson
John F. Stephen
Assignee (at issue)
ICI Americas, Inc.
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.