Granted Patent
Utility
US 6,593,382 · App. 10/058,077
Polyolefin resin pre-expanded particles and process for preparing the same
Inventors:
Taro Kiguchi, Tomonori Iwamoto, Kenichi Senda
Patented Case
View Patent ↗
Granted: Jul 15, 2003
Filed: Jan 29, 2002
Inventors
Taro Kiguchi
Tomonori Iwamoto
Kenichi Senda
Assignee (at issue)
KANEKA CORPORATION
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.