IP Library › Granted Patent US 6,267,809
Granted Patent Utility
US 6,267,809 · App. 09/442,153

Driveway sealer using phase stable pourable pitch

Inventors: D. Chris Boyer, Patricia K. Doolin
Patented Case View Patent ↗
Granted: Jul 31, 2001 Filed: Nov 16, 1999
Inventors
D. Chris Boyer
Patricia K. Doolin
Assignee (at issue)
Marathon Ashland Petroleum LLC

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Quick Facts
Patent No.
US 6,267,809
App. No.
09/442,153
Filed
1999-11-16
Granted
2001-07-31
Kind
A