Granted Patent
Utility
US 6,143,172 · App. 09/236,681
Methods for ameliorating hydrocarbon spills in marine and inland waters
Inventors:
Glenn R. Rink, Robert L. Rosania, David R. Smith, Thomas C. Johnson
Patented Case
View Patent ↗
Granted: Nov 7, 2000
Filed: Jan 25, 1999
Inventors
Glenn R. Rink
Robert L. Rosania
David R. Smith
Thomas C. Johnson
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.