Demulsifier for quaternary ammonium salt containing fuels
US-11008526-B2 · May 18, 2021 · US
Quaternary ammonium compounds
Quaternary ammonium compounds · 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 | C07C211/62 |
| Official title | Quaternary ammonium compounds |
| Display label | Quaternary ammonium compounds |
| Total patents | 81 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 11 |
| 2016 | 5 |
| 2017 | 10 |
| 2018 | 10 |
| 2019 | 10 |
| 2020 | 11 |
| 2021 | 5 |
| 2022 | 3 |
| 2023 | 9 |
| 2024 | 2 |
| 2025 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Aqueous compositions for hair treatment comprising polyorganosiloxanes with polyhydroxyaromatic moieties
US-10982051-B2 · Apr 20, 2021 · US
Base generator, reagent, organic salt, composition, method for manufacturing device, cured film and device
US-10906921-B2 · Feb 2, 2021 · US
Treatment of kerogen in subterranean zones
US-10871061-B2 · Dec 22, 2020 · US
Aqueous electrolytes with bis(fluorosulfonyl)imide salt electrolyte and ionic liquid system and batteries using the electrolyte system
US-10868339-B2 · Dec 15, 2020 · US
Perovskite compound and photoconversion device using the same
US-2020361968-A1 · Nov 19, 2020 · US
Adhesive composition, bio-electrode, method for manufacturing a bio-electrode, and salt
US-10808148-B2 · Oct 20, 2020 · US
Emulsified acidic treatment fluid with surface modification agents
US-10781363-B2 · Sep 22, 2020 · US
Reactive antibacterial compound and preparation method thereof
US-2020196598-A1 · Jun 25, 2020 · US
Energy providing devices and applications thereof
US-2020203692-A1 · Jun 25, 2020 · US
Energy providing devices and applications thereof
US-10629880-B2 · Apr 21, 2020 · US
Reactive antibacterial compound and preparation method thereof
US-10609927-B2 · Apr 7, 2020 · US
Nonaqueous electrolytic solution for electric double layer capacitors
US-10593488-B2 · Mar 17, 2020 · US
Adamantane and memantine derivatives as peripheral NMDA receptor antagonists
US-10538482-B2 · Jan 21, 2020 · US
Base generator, reagent, organic salt, composition, method for manufacturing device, cured film and device
US-2019330247-A1 · Oct 31, 2019 · US
Reactive antibacterial compound and preparation method thereof
US-10368544-B2 · Aug 6, 2019 · US
Treatment of kerogen in subterranean zones
US-2019211658-A1 · Jul 11, 2019 · US
Aqueous electrolytes with bis(fluorosulfonyl)imide salt electrolyte and ionic liquid system and batteries using the electrolyte system
US-2019173131-A1 · Jun 6, 2019 · US
Reduction catalyst and chemical reactor
US-10308574-B2 · Jun 4, 2019 · US
Soluble liquid formulations of quinclorac ammonium salts
US-2019150439-A1 · May 23, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07C211/62?
- CPC C07C211/62 is the Cooperative Patent Classification code for “Quaternary ammonium compounds.”
- How many patents are filed under CPC C07C211/62 (Quaternary ammonium compounds)?
- Our database includes 81 publications tagged with this CPC code.
- Is patent activity under CPC C07C211/62 growing?
- Publication counts under this code: 2 in 2024 vs 5 in 2025 (latest complete years).