Granted Patent
Utility
US 6,143,609 · App. 08/824,476
Method for forming semiconductor memory device
Inventors:
Kazuo Sato, Kenji Ueda, Michio Morita, Fumihiko Noro, Kyoko Miyamoto, Hideaki Onishi, Kazuo Umeda, Kazuya Kubo
Patented Case
View Patent ↗
Granted: Nov 7, 2000
Filed: Dec 2, 1996
Inventors
Kazuo Sato
Kenji Ueda
Michio Morita
Fumihiko Noro
Kyoko Miyamoto
Hideaki Onishi
Kazuo Umeda
Kazuya Kubo
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.