Diamond particles with multilayer hard coatings and polycrystalline diamond making therefrom
US-2026078289-A1 · Mar 19, 2026 · US
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Cheng Chris patents
Cheng Chris is listed as an inventor on 40 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Cheng Chris |
| Total patents | 40 |
| First publication | Aug 28, 2018 |
| Latest publication | Mar 19, 2026 |
Notable patents
Publications ranked by popularity score, then publication date.
Hydraulic control apparatus and method for a downhole tool
US-12435585-B1 · Oct 7, 2025 · US
Polycrystalline diamond composite with a toughening agent and the methods of making the same
US-2025256376-A1 · Aug 14, 2025 · US
Force modulation cartridge system for a drill bit
US-12337428-B2 · Jun 24, 2025 · US
Pdc cutter and method of making it
US-2025187144-A1 · Jun 12, 2025 · US
Sensor system with an interior sensor and a piezoelectric power supply
US-2025047220-A1 · Feb 6, 2025 · US
Sensor system with an interior sensor and a piezoelectric power supply
US-12218610-B1 · Feb 4, 2025 · US
Impregnated diamond cutter with an improved rop
US-2025001553-A1 · Jan 2, 2025 · US
Pdc cutter with unique microstructure
US-2024425736-A1 · Dec 26, 2024 · US
Unique PDC microstructure and the method of making it
US-12104111-B2 · Oct 1, 2024 · US
Recent patents
Latest publications not already listed above.
Force modulation cartridge system for a drill bit
US-2024300058-A1 · Sep 12, 2024 · US
Cutting elements with reduced variable back rake angle
US-12011773-B2 · Jun 18, 2024 · US
Cutting Elements with Ridged and Inclined Cutting Face
US-2024093556-A1 · Mar 21, 2024 · US
Blade cap force modulation system for a drill bit
US-11879296-B2 · Jan 23, 2024 · US
Force modulation system for a drill bit
US-11808090-B2 · Nov 7, 2023 · US
Method for forming cutters
US-11794290-B2 · Oct 24, 2023 · US
Force modulation system with an elastic force member for downhole conditions
US-11702891-B2 · Jul 18, 2023 · US
Blade cap force modulation system for a drill bit
US-2023015380-A1 · Jan 19, 2023 · US
Force modulation system for a drill bit
US-2023015607-A1 · Jan 19, 2023 · US
Blade cap force modulation system for a drill bit
US-11499378-B2 · Nov 15, 2022 · US
Force modulation system for a drill bit
US-11499377-B2 · Nov 15, 2022 · US
Cutting element with reduced friction
US-11401749-B2 · Aug 2, 2022 · US
Method for forming cutters
US-2022234151-A1 · Jul 28, 2022 · US
Cutting element with non-planar cutting edges
US-11365589-B2 · Jun 21, 2022 · US
Force modulation system with an elastic force member for downhole conditions
US-2022162915-A1 · May 26, 2022 · US
Blade cap force modulation system for a drill bit
US-2022162914-A1 · May 26, 2022 · US
Force modulation system for a drill bit
US-2022162913-A1 · May 26, 2022 · US
Cutting Elements with Ridged and Inclined Cutting Face
US-2022003046-A1 · Jan 6, 2022 · US
Cutting Elements with Reduced Variable Back Rake Angle
US-2021370419-A1 · Dec 2, 2021 · US
Polycrystalline diamond cutter with improved geometry for cooling and cutting evacuation and efficiency and durability
US-10907416-B2 · Feb 2, 2021 · US
Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| Cnpc Usa Corp | 39 |
| Beijing Huamei Inc | 28 |
| China Nat Petroleum Corp | 14 |
| Beijing Huamei Inc Cnpc | 12 |
| Cnpc Usa Corp And Beijing Huamei Inc Cnpc | 1 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| E21B10/62 | 12 |
| E21B10/42 | 10 |
| E21B10/43 | 10 |
| E21B10/5673 | 10 |
| E21B10/55 | 8 |