Granted Patent
Utility
US 5,316,985 · App. 07/804,069
Suppression of crystal growth in low dielectric inorganic composition using ultrafine alumina
Inventors:
Jau-Ho Jean, Tapan K. Gupta
Patented Case
View Patent ↗
Granted: May 31, 1994
Filed: Dec 9, 1991
Inventors
Jau-Ho Jean
Tapan K. Gupta
Assignee (at issue)
Aluminum Company of America
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.