Pigmented and fluorescent compounds derived from the addition of a primary or secondary amine to an aldehyde
US-12590209-B2 · Mar 31, 2026 · US
having nitrogen atoms of imino groups quaternised
having nitrogen atoms of imino groups quaternised · 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 | C07C251/30 |
| Official title | having nitrogen atoms of imino groups quaternised |
| Display label | having nitrogen atoms of imino groups quaternised |
| Total patents | 35 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 1 |
| 2017 | 5 |
| 2018 | 3 |
| 2019 | 5 |
| 2020 | 2 |
| 2021 | 3 |
| 2022 | 4 |
| 2023 | 2 |
| 2024 | 3 |
| 2025 | 2 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Ammonium salt compound, additive for electrolytic copper plating, electrolytic copper plating solution composition and electrolytic copper plating method
US-2025369146-A1 · Dec 4, 2025 · US
Compound for optical absorbent
US-2025197346-A1 · Jun 19, 2025 · US
Compound, core-shell dye, photosensitive resin composition including the same, and color filter
US-12110262-B2 · Oct 8, 2024 · US
Fluorogenic sensors for detecting antigens
US-2024201179-A1 · Jun 20, 2024 · US
Compound, core-shell dye, photosensitive resin composition including the same, and color filter
US-11945763-B2 · Apr 2, 2024 · US
Compound and colored resin composition
US-11584852-B2 · Feb 21, 2023 · US
Acyclic carbene ligand for ruthenium complex formation, ruthenium complex catalyst, and use thereof
US-11559797-B2 · Jan 24, 2023 · US
Compound, core-shell dye, photosensitive resin composition including the same, and color filter
US-2022388945-A1 · Dec 8, 2022 · US
Compound, core-shell dye, photosensitive resin composition including the same, and color filter
US-2022380297-A1 · Dec 1, 2022 · US
Pigmented and fluorescent compounds derived from the addition of a primary or secondary amine to an aldehyde
US-2022289981-A1 · Sep 15, 2022 · US
Compound, core-shell dye, photosensitive resin composition including the same, and color filter
US-11427529-B2 · Aug 30, 2022 · US
Compound, liquid composition, thermal transfer recording sheet, toner, resist composition for color filter, and color filter
US-11021436-B2 · Jun 1, 2021 · US
Acyclic carbene ligand for ruthenium complex formation, ruthenium complex catalyst, and use thereof
US-2021138443-A1 · May 13, 2021 · US
Compound and colored resin composition
US-2021002487-A1 · Jan 7, 2021 · US
Compound, liquid composition, thermal transfer recording sheet, toner, resist composition for color filter, and color filter
US-2020347007-A1 · Nov 5, 2020 · US
Novel compound, core-shell dye, photosensitive resin composition including the same, and color filter
US-2020308099-A1 · Oct 1, 2020 · US
Acid-resistant base and/or radical generator, and curable resin composition containing said base and/or radical generator
US-10428015-B2 · Oct 1, 2019 · US
Composition and methods for measuring ion channel activity in a cell
US-2019187155-A1 · Jun 20, 2019 · US
Process for preparing substituted pyrazoles containing haloalkoxy- and haloalkylthio groups from alpha,alpha -dihaloalkylamines and ketimines
US-10273215-B2 · Apr 30, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07C251/30?
- CPC C07C251/30 is the Cooperative Patent Classification code for “having nitrogen atoms of imino groups quaternised.”
- How many patents are filed under CPC C07C251/30 (having nitrogen atoms of imino groups quaternised)?
- Our database includes 35 publications tagged with this CPC code.
- Is patent activity under CPC C07C251/30 growing?
- Publication counts under this code: 3 in 2024 vs 2 in 2025 (latest complete years).