Granted Patent
Utility
US 6,469,337 · App. 09/545,886
Semiconductor memory device and manufacturing method and mask data preparing method for the same
Inventors:
Mitsunari Sukekawa, Takeshi Watanabe, Akira Hoshino, Masayuki Hamada
Patented Case
View Patent ↗
Granted: Oct 22, 2002
Filed: Apr 7, 2000
Inventors
Mitsunari Sukekawa
Takeshi Watanabe
Akira Hoshino
Masayuki Hamada
Assignee (at issue)
NEC 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.