Granted Patent
Utility
US 4,578,879 · App. 06/664,535
Fluidizing apparatus
Inventors:
Takeshi Yokoyama, Haruyuki Koda, Matsunao Maeda, Keiji Kobayashi, Masafumi Aoba, Masaaki Miwa
Patented Case
View Patent ↗
Granted: Apr 1, 1986
Filed: Oct 25, 1984
Inventors
Takeshi Yokoyama
Haruyuki Koda
Matsunao Maeda
Keiji Kobayashi
Masafumi Aoba
Masaaki Miwa
Assignee (at issue)
Mitsui Engineering & Shipbuilding 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.