Granted Patent
Utility
US 5,405,529 · App. 08/092,872
Ceramic filter and manufacturing method therefor
Inventors:
Shunzo Shimai, Koichi Imura, Kenichi Okamoto, Tadayoshi Muto
Patented Case
View Patent ↗
Granted: Apr 11, 1995
Filed: Jul 19, 1993
Inventors
Shunzo Shimai
Koichi Imura
Kenichi Okamoto
Tadayoshi Muto
Assignee (at issue)
Toshiba Ceramics 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.