Granted Patent
Utility
US 5,189,105 · App. 07/738,916
Alcohol mixture for plasticizer
Inventors:
Chihiro Miyazawa, Souichi Orita, Akio Tsuboi
Patented Case
View Patent ↗
Granted: Feb 23, 1993
Filed: Aug 1, 1991
Inventors
Chihiro Miyazawa
Souichi Orita
Akio Tsuboi
Assignee (at issue)
Mitsubishi Chemical 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.