Granted Patent
Utility
US 5,993,752 · App. 08/980,646
Device for dissolving a coagulant
Inventor:
Shogo Kobayashi
Patented Case
View Patent ↗
Granted: Nov 30, 1999
Filed: Dec 1, 1997
Inventor
Shogo Kobayashi
Assignee (at issue)
Kobayashi Engineering Works, Ltd. Diafloc Company Limited
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.