Granted Patent
Utility
US 5,128,009 · App. 07/621,033
Process for reducing the reflectivity of sputtered films
Inventor:
Hellmut Joswig
Patented Case
View Patent ↗
Granted: Jul 7, 1992
Filed: Nov 30, 1990
Inventor
Hellmut Joswig
Assignee (at issue)
Siemens Aktiengesellschaft
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.