John Patrick RINGSTROM

City:

Calgary

Country:

Canada

Published Applications:

Last publication date:

2014-01-23

Top Assignees for applications by John Patrick RINGSTROM

The entities that hold a legal rights for patent applications filed by inventor RINGSTROM John Patrick:

MARATHON OIL CANADA CORPORATION 1 Calgary, Canada
SHELL OIL COMPANY 1 Houston, TX United States
SHELL CANADA ENERGY 1 Calgary, Canada
Fort Hills Energy L.P. 1 , Canada
CHEVRON CANADA LIMITED 1 Calgary, Canada
TRUENORTH ENERGY CORP. 1 Calgary, Canada

Recent patent applications by RINGSTROM John Patrick

John Patrick RINGSTROM from Calgary, CA has applied for patents for these inventions. The list has both pending applications and granted patents:

#1 | 2014-01-23

US20140021103A1

Chemistry; metallurgy

Method for extracting bitumen from an oil sand stream

#2 | 2013-08-29

US20130220890A1

Chemistry; metallurgy

METHOD FOR EXTRACTING BITUMEN FROM AN OIL SAND STREAM

#3 | 2005-07-14

US20050150844A1

Chemistry; metallurgy

Process and apparatus for treating tailings

InventorID:

408923 ⎘