Granted Patent
Utility
US 5,817,552 · App. 08/635,526
Process of making a dram cell arrangement
Inventors:
Wolfgang Roesner, Lothar Risch, Franz Hofman, Wolfgang Krautschneider
Patented Case
View Patent ↗
Granted: Oct 6, 1998
Filed: Apr 22, 1996
Inventors
Wolfgang Roesner
Lothar Risch
Franz Hofman
Wolfgang Krautschneider
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.