Granted Patent
Utility
US 6,593,839 · App. 10/034,112
Leakage flux-type power conversion transformer
Inventors:
Kazuhiro Nakayama, Shigeo Abe
Patented Case
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Granted: Jul 15, 2003
Filed: Jan 3, 2002
Inventors
Kazuhiro Nakayama
Shigeo Abe
Assignee (at issue)
Toko 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.