Assignee
WESTERN OIL SANDS LTD
2 granted patents·76 citations·filing 1976–1976
Top patents by PatentIndex Score
2 records- 0183US4054506AMethod of removing bitumen from tar sand utilizing ultrasonic energy and stirringWESTERN OIL SANDS LTD·Filed 1976·Granted Oct 18, 1977·52 cites·5 claims
- 0269US4054505AMethod of removing bitumen from tar sand for subsequent recovery of the bitumenWESTERN OIL SANDS LTD·Filed 1976·Granted Oct 18, 1977·24 cites·5 claims
Join the waitlist — get patent alerts
Get an alert when WESTERN OIL SANDS LTD files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →