Granted Patent
Utility
US 5,744,564 · App. 08/140,182
Wrinkled absorbent particles of high effective surface area having fast absorption rate
Inventors:
Frederick W. Stanley, Jr., Jack C. Lamphere, Larry R. Wilson
Patented Case
View Patent ↗
Granted: Apr 28, 1998
Filed: Nov 4, 1993
Inventors
Frederick W. Stanley, Jr.
Jack C. Lamphere
Larry R. Wilson
Assignee (at issue)
THE DOW CHEMICAL COMPANY
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.