Granted Patent
Utility
US 6,043,534 · App. 09/052,142
High voltage semiconductor device
Inventor:
Seiji Sogo
Patented Case
View Patent ↗
Granted: Mar 28, 2000
Filed: Mar 31, 1998
Inventor
Seiji Sogo
Assignee (at issue)
Matsushita Electronics 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.