DM

David Llewellyn Mallis

HY Hydril: 14 patents #5 of 135Top 4%
Overall (All Time): #351,579 of 4,157,543Top 9%
14
Patents All Time

Issued Patents All Time

Showing 1–14 of 14 patents

Patent #TitleCo-InventorsDate
9052041 Wedge threads with a solid lubricant coating Andrea L. Reade-Romero 2015-06-09
8984734 Step-to-step wedge thread connections and related methods Gary W. Ward 2015-03-24
8668233 Threaded connection with perturbed flanks Harris A. Reynolds, Jr. 2014-03-11
8496274 Step-to-step wedge thread connections and related methods Gary W. Ward 2013-07-30
7988205 Wedge thread with torque shoulder Harris A. Reynolds, Jr. 2011-08-02
7690696 Wedge thread with torque shoulder Harris A. Reynolds, Jr. 2010-04-06
7575255 Wedge thread with high-angle metal seal Harris A. Reynolds, Jr. 2009-08-18
7527304 Floating wedge thread for tubular connection Robert S. Sivley, IV, Harris A. Reynolds, Jr. 2009-05-05
7014212 Tubular joint wear indicator 2006-03-21
6626471 Double flex seal for tubular connection 2003-09-30
6530607 Two-step threaded connector having differential thread width Robert S. Sivley, IV 2003-03-11
6206436 Differential wedge thread for threaded connector 2001-03-27
6158785 Multi-start wedge thread for tubular connection Bernard F. Beaulier 2000-12-12
5794985 Threaded pipe connection 1998-08-18