Granted Patent
Utility
US 4,375,236 · App. 06/305,242
Regenerator flow distribution by means of air jets
Inventor:
Yih-Wan Tsai
Patented Case
View Patent ↗
Granted: Mar 1, 1983
Filed: Sep 24, 1981
Inventor
Yih-Wan Tsai
Assignee (at issue)
PPG Industries, Inc.
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.