Granted Patent
Utility
US 6,136,898 · App. 09/333,430
Unblown ethylene-vinyl acetate copolymer treated asphalt and its method of preparation
Inventors:
Roman Loza, Laurence G. Dammann, Roger E. Hayner, Patricia K. Doolin
Patented Case
View Patent ↗
Granted: Oct 24, 2000
Filed: Jun 15, 1999
Inventors
Roman Loza
Laurence G. Dammann
Roger E. Hayner
Patricia K. Doolin
Assignees (at issue)
Marathon Ashland Petroleum LLC
Ashland, 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.