Granted Patent
Utility
US 5,658,393 · App. 08/500,085
Method of removing adsorbates from a polyester bottle
Inventors:
Hidenori Kaya, Hiroji Niimi
Patented Case
View Patent ↗
Granted: Aug 19, 1997
Filed: Jul 10, 1995
Inventors
Hidenori Kaya
Hiroji Niimi
Assignee (at issue)
Mitsui Petrochemical Industries, 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.