Highly accurate de novo polynucleotide synthesis
US-2025352972-A1 · Nov 20, 2025 · US
Propionic acid
Propionic acid · 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 | C07C53/122 |
| Official title | Propionic acid |
| Display label | Propionic acid |
| Total patents | 54 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 10 |
| 2016 | 10 |
| 2017 | 6 |
| 2018 | 7 |
| 2019 | 2 |
| 2020 | 8 |
| 2021 | 2 |
| 2023 | 3 |
| 2024 | 2 |
| 2025 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for synthesizing perovskite precursor solution of formamidine-based ionic liquid, celldevice, and solar cell
US-2025287825-A1 · Sep 11, 2025 · US
Highly accurate de novo polynucleotide synthesis
US-12357959-B2 · Jul 15, 2025 · US
Salt crystals
US-2025129087-A1 · Apr 24, 2025 · US
Production of bio-based liquefied petroleum gas
US-12146113-B2 · Nov 19, 2024 · US
Integrated carboxylic acid production from synthesis gas
US-2024010596-A1 · Jan 11, 2024 · US
Production of bio-based liquefied petroleum gas
US-2023340349-A1 · Oct 26, 2023 · US
Production of bio-based liquefied petroleum gas
US-11680216-B2 · Jun 20, 2023 · US
Methods for preparing metal carboxylates in one-pot reaction
US-11566036-B2 · Jan 31, 2023 · US
Imine-type quaternary ammonium salt catalyst, preparation method thereof and use thereof for preparation of polyisocyanate composition
US-11059772-B2 · Jul 13, 2021 · US
Process for manufacturing propionate products
US-2021002679-A1 · Jan 7, 2021 · US
Imine-type quaternary ammonium salt catalyst, preparation method thereof and use thereof for preparation of polyisocyanate composition
US-2020377445-A1 · Dec 3, 2020 · US
Process for manufacturing propionate products
US-10815503-B2 · Oct 27, 2020 · US
Quaternary ammonium compound, and agent for suppression of generation of volatile organic compound from polyacetal by use of the same
US-10815190-B2 · Oct 27, 2020 · US
Methods for preparing metal carboxylates in one-pot reaction
US-2020308210-A1 · Oct 1, 2020 · US
Process for making carboxylic acids
US-2020255365-A1 · Aug 13, 2020 · US
Production of bio-based liquefied petroleum gas
US-2020239798-A1 · Jul 30, 2020 · US
Highly accurate de novo polynucleotide synthesis
US-2020222875-A1 · Jul 16, 2020 · US
Process of alkane oxidative dehydrogenation and/or alkene oxidation
US-10526269-B2 · Jan 7, 2020 · US
Quaternary ammonium compound, and agent for suppression of generation of volatile organic compound from polyacetal by use of the same
US-2019161433-A1 · May 30, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07C53/122?
- CPC C07C53/122 is the Cooperative Patent Classification code for “Propionic acid.”
- How many patents are filed under CPC C07C53/122 (Propionic acid)?
- Our database includes 54 publications tagged with this CPC code.
- Is patent activity under CPC C07C53/122 growing?
- Publication counts under this code: 2 in 2024 vs 4 in 2025 (latest complete years).