Granted Patent
Utility
US 6,720,717 · App. 10/252,800
Field emission-type electron source
Inventors:
Takuya Komoda, Yoshiyuki Takegawa, Koichi Aizawa, Takashi Hatai, Tsutomu Ichihara, Yoshiaki Honda, Yoshifumi Watabe, Toru Baba
Patented Case
View Patent ↗
Granted: Apr 13, 2004
Filed: Sep 24, 2002
Inventors
Takuya Komoda
Yoshiyuki Takegawa
Koichi Aizawa
Takashi Hatai
Tsutomu Ichihara
Yoshiaki Honda
Yoshifumi Watabe
Toru Baba
Assignee (at issue)
Matsushita Electric Works, Ltd.
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.