Granted Patent
Utility
US 5,556,568 · App. 08/420,779
Slide gate plate
Inventors:
Shigeki Niwa, Etsuhiro Hasebe, Kazuo Itoh, Toshihiro Indoh, Masamichi Asai
Patented Case
View Patent ↗
Granted: Sep 17, 1996
Filed: Apr 12, 1995
Inventors
Shigeki Niwa
Etsuhiro Hasebe
Kazuo Itoh
Toshihiro Indoh
Masamichi Asai
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.