Granted Patent
Utility
US 5,969,935 · App. 08/616,856
Use of calcium and strontium dopants to improve retention performance in a PZT ferroelectric film
Inventors:
Lee Kammerdiner, Tom E. Davenport, Domokos Hadnagy
Patented Case
View Patent ↗
Granted: Oct 19, 1999
Filed: Mar 15, 1996
Inventors
Lee Kammerdiner
Tom E. Davenport
Domokos Hadnagy
Assignee (at issue)
RAMTRON INTERNATIONAL 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.