Substituted Carboxamide Corrosion Inhibitor Compounds
US-2023064911-A1 · Mar 2, 2023 · US
This page is not indexed by search engines while we improve data quality.
Qu Liangwei patents
Qu Liangwei is listed as an inventor on 39 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Qu Liangwei |
| Total patents | 39 |
| First publication | Apr 14, 2016 |
| Latest publication | Mar 2, 2023 |
Notable patents
Publications ranked by popularity score, then publication date.
Acrylate-based sulfur scavenging agents for use in oilfield operations
US-11225604-B2 · Jan 18, 2022 · US
Synergistic sulfide scavenging additives for use in oilfield operations
US-11078403-B2 · Aug 3, 2021 · US
Acrylate-based sulfur scavenging agents for use in oilfield operations
US-2020239772-A1 · Jul 30, 2020 · US
Compositions, systems, and methods for removing iron sulfide scale from oilfield components
US-10668510-B2 · Jun 2, 2020 · US
Synergistic sulfide scavenging additives for use in oilfield operations
US-2020115617-A1 · Apr 16, 2020 · US
Acrylate-based sulfur scavenging agents for use in oilfield operations
US-10597582-B2 · Mar 24, 2020 · US
Cationic multiple quaternary ammonium-based surfactants for enhancing production in subterranean formations
US-10590333-B2 · Mar 17, 2020 · US
Compositions, systems, and methods for removing iron sulfide scale from oilfield components using methyl acrylate
US-10584275-B2 · Mar 10, 2020 · US
Synergistic sulfide scavenging additives for use in oilfield operations
US-10550309-B2 · Feb 4, 2020 · US
Recent patents
Latest publications not already listed above.
Tagged corrosion inhibitors for use in subterranean operations
US-10526873-B2 · Jan 7, 2020 · US
Multi-tail hydrate inhibitors
US-10364385-B2 · Jul 30, 2019 · US
Multiple hydrophilic head corrosion inhibitors
US-10246628-B2 · Apr 2, 2019 · US
Synergistic sulfide scavenging additives for use in oilfield operations
US-2018346794-A1 · Dec 6, 2018 · US
Multi-tail hydrate inhibitors
US-2018334610-A1 · Nov 22, 2018 · US
Cationic surfactants for scale inhibitor squeeze applications
US-10106721-B2 · Oct 23, 2018 · US
Multi-tail hydrate inhibitors
US-10059871-B2 · Aug 28, 2018 · US
Compositions, systems, and methods for removing iron sulfide scale from oilfield components
US-2018169714-A1 · Jun 21, 2018 · US
Compositions, systems, and methods for removing iron sulfide scale from oilfield components
US-9919348-B2 · Mar 20, 2018 · US
Compositions, systems, and methods for removing iron sulfide scale from oilfield components using methyl acrylate
US-2018072940-A1 · Mar 15, 2018 · US
Multiple hydrophilic head hydrate inhibitors
US-9902893-B2 · Feb 27, 2018 · US
Acrylonitrile-based sulfur scavenging agents and methods of use in oilfield operations
US-9896616-B2 · Feb 20, 2018 · US
Multiple hydrophilic head hydrate inhibitors
US-2018010036-A1 · Jan 11, 2018 · US
Cationic surfactants for scale inhibitor squeeze applications
US-2017342309-A1 · Nov 30, 2017 · US
Acrylate-based sulfur scavenging agents for use in oilfield operations
US-2017335188-A1 · Nov 23, 2017 · US
Cationic multiple quaternary ammonium-based surfactants for enhancing production in subterranean formations
US-2017327732-A1 · Nov 16, 2017 · US
Multiple hydrophilic head hydrate inhibitors
US-9796906-B2 · Oct 24, 2017 · US
Multi-tail hydrate inhibitors
US-2017226403-A1 · Aug 10, 2017 · US
Multiple hydrophilic head corrosion inhibitors
US-2017190952-A1 · Jul 6, 2017 · US
Multi-tail hydrate inhibitors
US-9676991-B2 · Jun 13, 2017 · US
Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| Multi Chem Group Llc | 32 |
| Halliburton Energy Services Inc | 12 |
| Ecolab Usa Inc | 1 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| C09K8/035 | 16 |
| C09K2208/20 | 16 |
| C09K8/532 | 16 |
| C09K8/54 | 16 |
| C09K8/52 | 16 |