Inventor
EVANS ERIC R
NZ12 patents
⚠️ This page may combine multiple inventors who share the name “EVANS ERIC R”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
WEATHERFORD TECH HOLDINGS LLC
9 patentsUS11306562B1Apr 19, 2022
Stage tool having composite seats
WEATHERFORD TECH HOLDINGS LLC14 citations81
US9911016B2Mar 6, 2018
Radio frequency identification tag delivery system
WEATHERFORD TECH HOLDINGS LLC5 citations79
US10915714B2Feb 9, 2021
Active RFID tag arrangements for actuation of downhole equipment in well fluids
WEATHERFORD TECH HOLDINGS LLC3 citations68
US10586083B2Mar 10, 2020
Active RFID tag arrangements for actuation of downhole equipment in well fluids
WEATHERFORD TECH HOLDINGS LLC2 citations68
US10392898B2Aug 27, 2019
Mechanically operated reverse cementing crossover tool
WEATHERFORD TECH HOLDINGS LLC1 citations62
US10198606B2Feb 5, 2019
Radio frequency identification tag delivery system
WEATHERFORD TECH HOLDINGS LLC1 citations58
US12110761B2Oct 8, 2024
Hydrostatically insensitive testing and injection plug
WEATHERFORD TECH HOLDINGS LLC0 citations50
US12098615B2Sep 24, 2024
Hydrostatically insensitive plug assembly
WEATHERFORD TECH HOLDINGS LLC0 citations50
US11686182B2Jun 27, 2023
Top-down cementing of liner assembly
WEATHERFORD TECH HOLDINGS LLC0 citations47