Granted Patent
Utility
US 5,714,651 · App. 08/579,818
Use of polymerization inhibitor to prolong the life of a Lewis acid catalyst
Inventors:
Maher Y. Elsheikh, Michael Sheppard Bolmer
Patented Case
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Granted: Feb 3, 1998
Filed: Dec 28, 1995
Inventors
Maher Y. Elsheikh
Michael Sheppard Bolmer
Assignee (at issue)
Elf Atochem 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.