Methods for preparing mixed-metal oxide diamondoid nanocomposites and catalytic systems including the nanocomposites
US-11351604-B2 · Jun 7, 2022 · US
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Greenwell Hugh Christopher patents
Greenwell Hugh Christopher is listed as an inventor on 39 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Greenwell Hugh Christopher |
| Total patents | 39 |
| First publication | Sep 21, 2017 |
| Latest publication | Jun 7, 2022 |
Notable patents
Publications ranked by popularity score, then publication date.
Oil-based drilling fluids for high pressure and high temperature drilling operations
US-11034880-B2 · Jun 15, 2021 · US
Layered double hydroxides for oil-based drilling fluids
US-10988659-B2 · Apr 27, 2021 · US
Methods for preparing mixed-metal oxide diamondoid nanocomposites and catalytic systems including the nanocomposites
US-2021086261-A1 · Mar 25, 2021 · US
Oil-based drilling fluids for high pressure and high temperature drilling operations
US-10954425-B2 · Mar 23, 2021 · US
Synthesis of transition-metal adamantane salts and oxide nanocomposites, and systems and methods including the salts or the nanocomposites
US-10906028-B2 · Feb 2, 2021 · US
Adamantane-intercalated layered double hydroxide
US-10906859-B2 · Feb 2, 2021 · US
Methods for preparing mixed-metal oxide diamondoid nanocomposites and catalytic systems including the nanocomposites
US-10875092-B2 · Dec 29, 2020 · US
Thermally stable surfactants for oil based drilling fluids
US-10876039-B2 · Dec 29, 2020 · US
Thermally stable surfactants for oil based drilling fluids
US-10870788-B2 · Dec 22, 2020 · US
Recent patents
Latest publications not already listed above.
Layered double hydroxides for oil-based drilling fluids
US-10793762-B2 · Oct 6, 2020 · US
Oil-based drilling fluid compositions which include layered double hydroxides as rheology modifiers
US-10745606-B2 · Aug 18, 2020 · US
Oil-based drilling fluids for high pressure and high temperature drilling operations
US-2020255717-A1 · Aug 13, 2020 · US
Oil-based drilling fluids for high pressure and high temperature drilling operations
US-2020216742-A1 · Jul 9, 2020 · US
Oil-based drilling fluids for high pressure and high temperature drilling operations
US-10676658-B2 · Jun 9, 2020 · US
Oil-based drilling fluid compositions which include layered double hydroxides as rheology modifiers and amino amides as emulsifiers
US-10647903-B2 · May 12, 2020 · US
Oil-based drilling fluids for high pressure and high temperature drilling operations
US-10640696-B2 · May 5, 2020 · US
High temperature layered mixed-metal oxide materials with enhanced stability
US-10252245-B2 · Apr 9, 2019 · US
Layered double hydroxides for oil-based drilling fluids
US-2019055451-A1 · Feb 21, 2019 · US
Thermally stable surfactants for oil based drilling fluids
US-2019055447-A1 · Feb 21, 2019 · US
Oil-based drilling fluids for high pressure and high temperature drilling operations
US-2019055448-A1 · Feb 21, 2019 · US
Oil-based drilling fluid compositions which include layered double hydroxides as rheology modifiers and amino amides as emulsifiers
US-2019055452-A1 · Feb 21, 2019 · US
Thermally stable surfactants for oil based drilling fluids
US-2019055460-A1 · Feb 21, 2019 · US
Oil-based drilling fluids for high pressure and high temperature drilling operations
US-2019055449-A1 · Feb 21, 2019 · US
Oil-based drilling fluid compositions which include layered double hydroxides as rheology modifiers
US-2019055453-A1 · Feb 21, 2019 · US
Layered double hydroxides for oil-based drilling fluids
US-2019055450-A1 · Feb 21, 2019 · US
Thermally stable surfactants for oil based drilling fluids
US-2019055446-A1 · Feb 21, 2019 · US
High aspect ratio layered double hydroxide materials and methods for preparation thereof
US-2019039988-A1 · Feb 7, 2019 · US
High aspect ratio layered double hydroxide materials and methods for preparation thereof
US-10138199-B2 · Nov 27, 2018 · US
Synthesis of transition-metal adamantane salts and oxide nanocomposites, and systems and methods including the salts or the nanocomposites
US-2018333701-A1 · Nov 22, 2018 · US
Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| Univ Durham | 39 |
| Saudi Arabian Oil Co | 36 |
| M I Drilling Fluids Uk Ltd | 18 |
| Saudi Arabian Oil Co | 3 |
| M-I Drilling Fluids Uk Ltd | 2 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| C09K8/36 | 23 |
| C09K8/34 | 17 |
| B01J37/04 | 16 |
| C09K8/035 | 13 |
| E21B21/003 | 12 |