Granted Patent
Utility
US 5,445,779 · App. 08/182,818
Process for the drying and heat-treatment of polybenzazole films
Inventors:
Peter E. Pierini, Myung Haing Cho
Patented Case
View Patent ↗
Granted: Aug 29, 1995
Filed: Jan 14, 1994
Inventors
Peter E. Pierini
Myung Haing Cho
Assignee (at issue)
THE DOW CHEMICAL COMPANY
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.