Granted Patent
Utility
US 5,693,861 · App. 08/078,500
Process for preparing solid amine oxides
Inventors:
Rebecca Smith, Y.-D. Mark Chen, R. Woodrow Wilson, Jr., Mayur Shah, Kim R. Smith, Sharon B. McGee
Patented Case
View Patent ↗
Granted: Dec 2, 1997
Filed: Jun 21, 1993
Inventors
Rebecca Smith
Y.-D. Mark Chen
R. Woodrow Wilson, Jr.
Mayur Shah
Kim R. Smith
Sharon B. McGee
Assignee (at issue)
ALBEMARLE CORPORATION
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.