Granted Patent
Utility
US 6,407,302 · App. 09/479,175
Isomerization process of a mixture containing vinyl and vinylidene olefins
Inventors:
Fred Twu, William L. Cox
Patented Case
View Patent ↗
Granted: Jun 18, 2002
Filed: Jan 7, 2000
Inventors
Fred Twu
William L. Cox
Assignee (at issue)
BP Corporation North America 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.