Granted Patent
Utility
US 5,068,430 · App. 07/558,094
Bleaching of colored amine oxides
Inventors:
James E. Borland, Y.-D. Mark Chen, Joe D. Sauer, Kim R. Smith, Rebecca Smith
Patented Case
View Patent ↗
Granted: Nov 26, 1991
Filed: Jul 26, 1990
Inventors
James E. Borland
Y.-D. Mark Chen
Joe D. Sauer
Kim R. Smith
Rebecca Smith
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.