Inventor

ROACH JAMES D

US3 patents

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

HALLIBURTON ENERGY SERV INC

2 patents

US7563076B2Jul 21, 2009

Variable rate pumping system

HALLIBURTON ENERGY SERV INC274 citations94

US7713033B2May 11, 2010

Double-acting, duplex pump controlled by two, two position spool valves

HALLIBURTON ENERGY SERV INC3 citations58

HALLIBURTON CO

1 patent

US4440404AApr 3, 1984

Packing arrangement

HALLIBURTON CO85 citations93