Metalate-based additives for use in subterranean formations
US-2018362825-A1 · Dec 20, 2018 · US
Lubricant additives
Lubricant additives · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C09K2208/34 |
| Official title | Lubricant additives |
| Display label | Lubricant additives |
| Total patents | 366 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 8 |
| 2017 | 34 |
| 2018 | 51 |
| 2019 | 57 |
| 2020 | 60 |
| 2021 | 48 |
| 2022 | 33 |
| 2023 | 30 |
| 2024 | 21 |
| 2025 | 17 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Dispersant in cement formulations for oil and gas wells
US-2018282216-A1 · Oct 4, 2018 · US
Process for converting calcium bentonite to sodium bentonite
US-10081574-B2 · Sep 25, 2018 · US
Metalate-based additives for use in subterranean formations
US-10072199-B2 · Sep 11, 2018 · US
Spacer fluids and cement slurries that include surfactants
US-2018223168-A1 · Aug 9, 2018 · US
Emulsified drilling fluids and methods of making and use thereof
US-2018223164-A1 · Aug 9, 2018 · US
Spacer fluid compositions that include surfactants
US-2018223169-A1 · Aug 9, 2018 · US
Use of dual-cation fluorocarbon surfactant as amphiphobic wettability reversal agent in drilling fluid
US-2018201821-A1 · Jul 19, 2018 · US
Friction-Reducing Compositions for Use in Drilling Operations
US-2018179431-A1 · Jun 28, 2018 · US
Hydro-fracking method using an aloe vera fracturing fluid
US-2018155600-A1 · Jun 7, 2018 · US
Method for drilling underground cavities, compositions comprising alkyl polyglycosides, and use thereof as a lubricant in the production of aqueous drilling muds
US-9945182-B2 · Apr 17, 2018 · US
Drilling mud composition with Aloe vera particles and a fracking process using the same
US-9879171-B2 · Jan 30, 2018 · US
Drilling fluid for downhole electrocrushing drilling
US-2017362490-A1 · Dec 21, 2017 · US
Ecofriendly lubricating additives for water-based wellbore drilling fluids
US-9834718-B2 · Dec 5, 2017 · US
Viscosity enhancer
US-9816362-B2 · Nov 14, 2017 · US
Method of increasing lubricity of wellbore fluids
US-2017321103-A1 · Nov 9, 2017 · US
Friction-Reducing Compound, Method of Producing Same, and Lubricant Composition
US-2017321147-A1 · Nov 9, 2017 · US
Fluorous additives for use in a fluorous-based treatment fluid
US-9803452-B2 · Oct 31, 2017 · US
Fluorous additives for use in a fluorous-based treatment fluid
US-9790413-B2 · Oct 17, 2017 · US
Using borated galactomannan to enhance swelling of superabsorbents for fracturing applications
US-2017267915-A1 · Sep 21, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C09K2208/34?
- CPC C09K2208/34 is the Cooperative Patent Classification code for “Lubricant additives.”
- How many patents are filed under CPC C09K2208/34 (Lubricant additives)?
- Our database includes 366 publications tagged with this CPC code.
- Is patent activity under CPC C09K2208/34 growing?
- Publication counts under this code: 21 in 2024 vs 17 in 2025 (latest complete years).