Additives for oil and gas drilling and production
US-2020399520-A1 · Dec 24, 2020 · US
with quaternised nitrogen atoms bound to carbon atoms of the carbon skeleton
with quaternised nitrogen atoms bound to carbon atoms of the carbon skeleton · 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 | C07C215/40 |
| Official title | with quaternised nitrogen atoms bound to carbon atoms of the carbon skeleton |
| Display label | with quaternised nitrogen atoms bound to carbon atoms of the carbon skeleton |
| Total patents | 128 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 12 |
| 2016 | 9 |
| 2017 | 8 |
| 2018 | 10 |
| 2019 | 12 |
| 2020 | 21 |
| 2021 | 19 |
| 2022 | 12 |
| 2023 | 11 |
| 2024 | 6 |
| 2025 | 8 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Additives for oil and gas drilling and production
US-2020399519-A1 · Dec 24, 2020 · US
Aromatic-based polyetheramine alkoxylates
US-2020332072-A1 · Oct 22, 2020 · US
Ionic liquid and method for dissolving cellulose using the same
US-2020239647-A1 · Jul 30, 2020 · US
Quaternized ammonium salts of hydrocarbyl epoxides and use thereof as additives in fuels and lubricants
US-10689326-B2 · Jun 23, 2020 · US
GLP-1 receptor agonists and uses thereof
US-10676465-B2 · Jun 9, 2020 · US
Additives for oil and gas drilling and production
US-2020131423-A1 · Apr 30, 2020 · US
Quaternary ammonium compounds as fuel or lubricant additives
US-10626341-B2 · Apr 21, 2020 · US
Novel compositions and methods for synthesizing deep eutectic solvents from lignin derived phenolic compounds
US-2020062681-A1 · Feb 27, 2020 · US
GLP-1 Receptor Agonists and Uses Thereof
US-2019382387-A1 · Dec 19, 2019 · US
GLP-1 Receptor Agonists and Uses Thereof
US-2019382388-A1 · Dec 19, 2019 · US
GLP-1 Receptor Agonists and Uses Thereof
US-2019382384-A1 · Dec 19, 2019 · US
Hydrotropic composition and its uses
US-2019345392-A1 · Nov 14, 2019 · US
Cationic carriers for nucleic acid delivery
US-2019336608-A1 · Nov 7, 2019 · US
Quaternary ammonium compounds as fuel or lubricant additives
US-2019309234-A1 · Oct 10, 2019 · US
Quaternary ammonium compounds as fuel or lubricant additives
US-10351791-B2 · Jul 16, 2019 · US
Synergistic compositions
US-10315993-B2 · Jun 11, 2019 · US
Using novel amines to stabilize quaternary trialkylalkanolamines
US-10264785-B2 · Apr 23, 2019 · US
Quaternized ammonium salts of hydrocarbyl epoxides and use thereof as additives in fuels and lubricants
US-2019084922-A1 · Mar 21, 2019 · US
Ionic Liquid, Lubricant, and Magnetic Recording Medium
US-2019051326-A1 · Feb 14, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07C215/40?
- CPC C07C215/40 is the Cooperative Patent Classification code for “with quaternised nitrogen atoms bound to carbon atoms of the carbon skeleton.”
- How many patents are filed under CPC C07C215/40 (with quaternised nitrogen atoms bound to carbon atoms of the carbon skeleton)?
- Our database includes 128 publications tagged with this CPC code.
- Is patent activity under CPC C07C215/40 growing?
- Publication counts under this code: 6 in 2024 vs 8 in 2025 (latest complete years).