Ashless ionic liquid
US-2025215346-A1 · Jul 3, 2025 · US
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Azelaic acid esters
Azelaic acid esters · 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 | C07C69/48 |
| Official title | Azelaic acid esters |
| Display label | Azelaic acid esters |
| Total patents | 13 |
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 | 1 |
| 2016 | 1 |
| 2017 | 1 |
| 2019 | 3 |
| 2020 | 4 |
| 2021 | 1 |
| 2024 | 1 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Thermochromic pigment compositions
US-12043596-B2 · Jul 23, 2024 · US
Use of polycarboxylic acid compounds for the treatment of fibrious amino acid based substrates, especially hair
US-11090255-B2 · Aug 17, 2021 · US
Coalescing agent derived from succinate ester
US-10807942-B2 · Oct 20, 2020 · US
Thermochromic pigment compositions
US-2020207699-A1 · Jul 2, 2020 · US
Use of polycarboxylic acid compounds for the treatment of fibrious amino acid based substrates, especially hair
US-2020170923-A1 · Jun 4, 2020 · US
Process for the preparation of purified dicarboxylic acids
US-10654786-B2 · May 19, 2020 · US
Process for the oxidative cleavage of vicinal diols
US-10421925-B2 · Sep 24, 2019 · US
Process for the preparation of purified dicarboxylic acids
US-2019202768-A1 · Jul 4, 2019 · US
Coalescing agent derived from succinate ester
US-2019106375-A1 · Apr 11, 2019 · US
Process for preparing a carboxylic acid
US-9822056-B2 · Nov 21, 2017 · US
Process for the preparation of azeleic acid from 9-octadecenedioic acid
US-9302972-B2 · Apr 5, 2016 · US
Blocked bio-based carboxylic acids and their use in thermosetting materials
US-2015232691-A1 · Aug 20, 2015 · US