Inventor
HARRIS RALPH E
US15 patents
⚠️ This page may combine multiple inventors who share the name “HARRIS RALPH E”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SPM OIL & GAS INC
6 patentsUS11448210B2Sep 20, 2022
Valve for reciprocating pump assembly
SPM OIL & GAS INC2 citations71
US12416363B2Sep 16, 2025
Wear-resistant hydraulic fracturing pump valves
SPM OIL & GAS INC0 citations60
US12025231B2Jul 2, 2024
Wear-resistant hydraulic fracturing pump valves
SPM OIL & GAS INC1 citations60
US12060946B2Aug 13, 2024
Valve seat with ceramic insert
SPM OIL & GAS INC0 citations49
US12366242B2Jul 22, 2025
Hydraulic fracturing pump health and performance monitoring using IoT sensor networks
SPM OIL & GAS INC0 citations46
US12492697B1Dec 9, 2025
System and method for reduced thread stress for buttress style threads used in frac pump fluid ends
SPM OIL & GAS INC0 citations45
SOUTHWEST RES INST
5 patentsUS5555880ASep 17, 1996
High frequency oscillatory ventilator and respiratory measurement system
SOUTHWEST RES INST138 citations97
US7275916B2Oct 2, 2007
Integrated engine/compressor control for gas transmission compressors
SOUTHWEST RES INST38 citations91
US6981488B2Jan 3, 2006
Internal combustion engine cylinder-to-cylinder balancing with balanced air-fuel ratios
SOUTHWEST RES INST14 citations81
US7866147B2Jan 11, 2011
Side branch absorber for exhaust manifold of two-stroke internal combustion engine
SOUTHWEST RES INST2 citations59
US7946382B2May 24, 2011
Gas compressor with side branch absorber for pulsation control
SOUTHWEST RES INST5 citations55