Granted Patent
Utility
US 6,204,627 · App. 09/374,114
Motor control apparatus
Inventors:
Shinji Watanabe, Masahiro Inaniwa, Noriyasu Matsufuji, Satoshi Numata, Takahiro Fujimaki
Patented Case
View Patent ↗
Granted: Mar 20, 2001
Filed: Aug 16, 1999
Inventors
Shinji Watanabe
Masahiro Inaniwa
Noriyasu Matsufuji
Satoshi Numata
Takahiro Fujimaki
Assignee (at issue)
Hitachi Koki Co., 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.