Granted Patent
Utility
US 5,976,648 · App. 08/768,163
Synthesis and use of heterogeneous polymer gels
Inventors:
Yong Li, Zhibing Hu, Xiaomin Zhang
Patented Case
View Patent ↗
Granted: Nov 2, 1999
Filed: Dec 13, 1996
Inventors
Yong Li
Zhibing Hu
Xiaomin Zhang
Assignee (at issue)
Kimberly-Clark Worldwide, 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.