Granted Patent
Utility
US 5,286,762 · App. 08/044,096
Styrene-based polymer moldings and process for production thereof
Inventors:
Keisuke Funaki, Komei Yamasaki
Patented Case
View Patent ↗
Granted: Feb 15, 1994
Filed: Mar 8, 1993
Inventors
Keisuke Funaki
Komei Yamasaki
Assignee (at issue)
IDEMITSU KOSAN 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.