Granted Patent
Utility
US 6,790,930 · App. 10/110,122
Process for producing polyimide resin
Inventors:
Takeshi Kikuchi, Hiroyuki Tsuji, Koji Okada, Hiroyuki Furutani, Koichiro Tanaka, Shoji Hara, Hitoshi Nojiri
Patented Case
View Patent ↗
Granted: Sep 14, 2004
Filed: Apr 4, 2002
Inventors
Takeshi Kikuchi
Hiroyuki Tsuji
Koji Okada
Hiroyuki Furutani
Koichiro Tanaka
Shoji Hara
Hitoshi Nojiri
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.