Jozeph Robert Marcin

City:

Spruce Grove

Country:

Canada

Published Applications:

Last publication date:

2020-06-11

Top Assignees for applications by Jozeph Robert Marcin

The entities that hold a legal rights for patent applications filed by inventor Marcin Jozeph Robert:

Weatherford Technology Holdings, LLC 2 Houston, TX United States
Vanguard Completions Ltd. 1 Edmonton, Alberta, Canada

Recent patent applications by Marcin Jozeph Robert

Jozeph Robert Marcin from Spruce Grove, CA has applied for patents for these inventions. The list has both pending applications and granted patents:

#1 | 2020-06-11

US20200182013A1

Fixed constructions

DOWNHOLE DROP PLUGS, DOWNHOLE VALVES, FRAC TOOLS, AND RELATED METHODS OF USE

#2 | 2017-06-22

US20170175487A1

Fixed constructions

Downhole drop plugs, downhole valves, frac tools, and related methods of use

#3 | 2015-12-03

US20150345252A1

Fixed constructions

Stage tool with lower tubing isolation

#4 | 2013-10-10

US20130264068A1

Fixed constructions

Reverse cementing valve

#5 | 2013-07-25

US20130186623A1

Fixed constructions

STEAM SPLITTER

InventorID:

349799 ⎘