Granted Patent
Utility
US 5,015,446 · App. 07/443,675
Catalyst retainer for an elongated tube
Inventor:
Sheldon G. Trujillo
Patented Case
View Patent ↗
Granted: May 14, 1991
Filed: Nov 30, 1989
Inventor
Sheldon G. Trujillo
Assignee (at issue)
Texaco Chemical 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.