Granted Patent
Utility
US 5,254,735 · App. 07/878,265
Process for preparing solid amine oxides
Inventors:
Kim R. Smith, Y.-D. Mark Chen, Rebecca Smith, James E. Borland, Joe D. Sauer
Patented Case
View Patent ↗
Granted: Oct 19, 1993
Filed: May 4, 1992
Inventors
Kim R. Smith
Y.-D. Mark Chen
Rebecca Smith
James E. Borland
Joe D. Sauer
Assignee (at issue)
Ethyl 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.