Granted Patent
Utility
US 5,445,897 · App. 08/069,672
Epitaxial wafer and process for producing the same
Inventors:
Tadashige Satoh, Hisanori Fujita
Patented Case
View Patent ↗
Granted: Aug 29, 1995
Filed: Jun 1, 1993
Inventors
Tadashige Satoh
Hisanori Fujita
Assignees (at issue)
Mitsubishi Kasei Polytec Company
Mitsubishi Kasei 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.