Inventor

ZHANG ZHEHUA

US5 patents

⚠️ This page may combine multiple inventors who share the name “ZHANG ZHEHUA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

CARIVEAU PETER THOMAS

1 patent

US9574405B2Feb 21, 2017

Hybrid disc bit with optimized PDC cutter placement

CARIVEAU PETER THOMAS7 citations79

CENTALA PRABHAKARAN K

1 patent

US8672060B2Mar 18, 2014

High shear roller cone drill bits

CENTALA PRABHAKARAN K11 citations79

ZHANG ZHEHUA

1 patent

US9033069B2May 19, 2015

High-shear roller cone and PDC hybrid bit

ZHANG ZHEHUA12 citations76

BIJAI RAHUL

1 patent

US8955413B2Feb 17, 2015

Manufacturing methods for high shear roller cone bits

BIJAI RAHUL5 citations59

SMITH INTERNATIONAL

1 patent

US9850717B2Dec 26, 2017

Methods for designing fixed cutter bits and bits made using such methods

SMITH INTERNATIONAL0 citations39