Granted Patent
Utility
US 6,541,569 · App. 09/056,349
Polymer alloys, morphology and materials for environmental remediation
Inventors:
James F. Morris, Stephen C. Stelpstra
Patented Case
View Patent ↗
Granted: Apr 1, 2003
Filed: Apr 7, 1998
Inventors
James F. Morris
Stephen C. Stelpstra
Assignee (at issue)
AbTech Industries, 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.