Granted Patent
Utility
US 6,290,896 · App. 08/443,672
Preparation process of the formed product of L-lactic acid base polymer
Inventors:
Kazuhiko Suzuki, Takayuki Watanabe, Yasuhiro Kitahara, Masanobu Ajioka
Patented Case
View Patent ↗
Granted: Sep 18, 2001
Filed: May 18, 1995
Inventors
Kazuhiko Suzuki
Takayuki Watanabe
Yasuhiro Kitahara
Masanobu Ajioka
Assignee (at issue)
MITSUI CHEMICALS, INC.
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.