Granted Patent
Utility
US 6,596,782 · App. 09/155,544
Hydrous polyolefin resin composition, preexpanded particles produced therefrom, process for producing the same, and expanded molding
Inventors:
Kenji Mogami, Tsuyoshi Mihayashi, Kyoichi Nakamura, Naruhiko Akamatsu
Patented Case
View Patent ↗
Granted: Jul 22, 2003
Filed: Sep 25, 1998
Inventors
Kenji Mogami
Tsuyoshi Mihayashi
Kyoichi Nakamura
Naruhiko Akamatsu
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.