Granted Patent
Utility
US 6,596,844 · App. 10/034,011
Controlled release polyacrylic acid granules and a process for preparing the same
Inventors:
Daniel James Adams, David William Weaver
Patented Case
View Patent ↗
Granted: Jul 22, 2003
Filed: Dec 20, 2001
Inventors
Daniel James Adams
David William Weaver
Assignee (at issue)
Noveon IP Holdings Corp.
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.