John R. Hellmann

City:

State College, Pennsylvania

Country:

United States

Published Applications:

Last publication date:

2013-05-23

Top Assignees for applications by John R. Hellmann

The entities that hold a legal rights for patent applications filed by inventor Hellmann John R.:

The Penn State Research Foundation 5 University Park, PA United States
CARBO CERAMICS INC. 2 Irving, TX United States
CARBO Ceramics, Inc. 1 Houston,, TX United States

Recent patent applications by Hellmann John R.

John R. Hellmann from State College, US has applied for patents for these inventions. The list has both pending applications and granted patents:

#1 | 2013-05-23

US20130125586A1

Chemistry; metallurgy

Proppants from mineralogical material

#2 | 2010-12-30

US20100326657A1

Chemistry; metallurgy

Treatment of particles for improved performance as proppants

#3 | 2010-03-18

US20100068521A1

Chemistry; metallurgy

Treatment of melt quenched aluminosilicate glass spheres for application as proppants via devitrification processes

#4 | 2009-05-07

US20090118145A1

Chemistry; metallurgy

METHOD FOR PRODUCING PROPPANT USING A DOPANT

#5 | 2008-01-17

US20080015103A1

Chemistry; metallurgy

Material having a controlled microstructure, core-shell macrostructure, and method for its fabrication

InventorID:

253710 ⎘