Granted Patent
Utility
US 5,283,271 · App. 07/997,051
3,5-diphenyl or substituted 3,5-diphenyl-1-hydroxy-1,2-dihydroimidazole-2-thiones
Inventors:
Derek H. R. Barton, Catherine Tachdjian
Patented Case
View Patent ↗
Granted: Feb 1, 1994
Filed: Dec 28, 1992
Inventors
Derek H. R. Barton
Catherine Tachdjian
Assignee (at issue)
Olin 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.