Granted Patent
Utility
US 5,525,682 · App. 08/473,205
Superabsorbent polymer and process for producing same
Inventors:
Akinori Nagatomo, Hiroaki Tamatani, Masanobu Ajioka, Akihiro Yamaguchi
Patented Case
View Patent ↗
Granted: Jun 11, 1996
Filed: Jun 7, 1995
Inventors
Akinori Nagatomo
Hiroaki Tamatani
Masanobu Ajioka
Akihiro Yamaguchi
Assignee (at issue)
Mitsui Toatsu Chemicals, Incorporated
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.