Granted Patent
Utility
US 5,198,073 · App. 07/733,546
Methods for treating the surface of a solid body
Inventor:
Kazuo Ishibashi
Patented Case
View Patent ↗
Granted: Mar 30, 1993
Filed: Jul 22, 1991
Inventor
Kazuo Ishibashi
Assignee (at issue)
Digital Equipment 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.