Granted Patent
Utility
US 5,032,374 · App. 07/370,931
Preparation of metal sulfides
Inventors:
Ricardo C. Pastor, Luisa E. Gorre
Patented Case
View Patent ↗
Granted: Jul 16, 1991
Filed: Jun 23, 1989
Inventors
Ricardo C. Pastor
Luisa E. Gorre
Assignee (at issue)
Hughes Aircraft Company
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.