Granted Patent
Utility
US 4,379,109 · App. 05/874,584
Method of preparing a monolithic structure having flow channels
Inventor:
Edgar A. Simpson
Patented Case
View Patent ↗
Granted: Apr 5, 1983
Filed: Feb 2, 1978
Inventor
Edgar A. Simpson
Assignee (at issue)
W. R. Grace & Co.
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.