Granted Patent
Utility
US 6,365,535 · App. 09/433,610
Ceramic composition having high adsorptive capacity for oxygen at elevated temperature
Inventors:
Ward C. Stevens, Delwyn Cummings, Philip S. H. Chen
Patented Case
View Patent ↗
Granted: Apr 2, 2002
Filed: Nov 2, 1999
Inventors
Ward C. Stevens
Delwyn Cummings
Philip S. H. Chen
Assignee (at issue)
ADVANCED TECHNOLOGY & MATERIALS CO., LTD.
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.