Darrell Johnson

City:

Katy, Texas

Country:

United States

Published Applications:

Last publication date:

2007-02-20

Top Assignees for applications by Darrell Johnson

The entities that hold a legal rights for patent applications filed by inventor Johnson Darrell:

Darrell Johnson from Katy, US has applied for patents for these inventions. The list has both pending applications and granted patents:

Apparatus and methods for utilizing a downhole deployment valve

Method for extracting coal bed methane with source fluid injection

InventorID:

4548660 ⎘