Granted Patent
Utility
US 5,183,641 · App. 07/578,420
Distributor plate in a fluidized bed reactor
Inventor:
Juhani Isaksson
Patented Case
View Patent ↗
Granted: Feb 2, 1993
Filed: Sep 26, 1990
Inventor
Juhani Isaksson
Assignee (at issue)
A. Ahlstrom Corporation
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.