Inventor
WITKOWSKI BRIAN C
US19 patents
⚠️ This page may combine multiple inventors who share the name “WITKOWSKI BRIAN C”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SPM FLOW CONTROL INC
10 patentsUS11149514B2Oct 19, 2021
Hydraulic fracturing system, apparatus, and method
SPM FLOW CONTROL INC29 citations97
US10808488B2Oct 20, 2020
Hydraulic fracturing system, apparatus, and method
SPM FLOW CONTROL INC31 citations97
US10526862B2Jan 7, 2020
Hydraulic fracturing system, apparatus, and method
SPM FLOW CONTROL INC57 citations97
US9273543B2Mar 1, 2016
Automated relief valve control system and method
SPM FLOW CONTROL INC47 citations95
US10753490B2Aug 25, 2020
Clapper valve
SPM FLOW CONTROL INC33 citations93
US10197172B2Feb 5, 2019
Clapper valve
SPM FLOW CONTROL INC33 citations93
US9857807B2Jan 2, 2018
Automated relief valve control system and method
SPM FLOW CONTROL INC34 citations92
US9322243B2Apr 26, 2016
Automated relief valve control system and method
SPM FLOW CONTROL INC46 citations92
US8998168B2Apr 7, 2015
Plug valve indicator
SPM FLOW CONTROL INC19 citations92
US11149885B2Oct 19, 2021
Carburizing grade micro-alloy high pressure swivel joints
SPM FLOW CONTROL INC1 citations55
SPM OIL & GAS INC
6 patentsUS11530591B2Dec 20, 2022
Large bore plug valve
SPM OIL & GAS INC1 citations73
US11512781B2Nov 29, 2022
Clapper check valve with a valve seat seal member
SPM OIL & GAS INC3 citations73
US11365819B2Jun 21, 2022
Clapper valve
SPM OIL & GAS INC1 citations72
US12320434B2Jun 3, 2025
Stabilized check valve
SPM OIL & GAS INC0 citations62
US11421504B2Aug 23, 2022
Hydraulic fracturing system, apparatus, and method
SPM OIL & GAS INC0 citations62
US12410869B2Sep 9, 2025
Two-pin clapper check valve
SPM OIL & GAS INC0 citations50