Bisphosphites with a 2-phenylphenol outer unit
US-2025382313-A1 · Dec 18, 2025 · US
Esters of phosphorous acids
Esters of phosphorous acids · 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 | C07F9/141 |
| Official title | Esters of phosphorous acids |
| Display label | Esters of phosphorous acids |
| Total patents | 52 |
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 | 3 |
| 2017 | 4 |
| 2018 | 10 |
| 2019 | 3 |
| 2020 | 5 |
| 2022 | 5 |
| 2023 | 4 |
| 2024 | 1 |
| 2025 | 6 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Bisphosphites with a 3,4-dialkylphenol outer unit
US-2025382316-A1 · Dec 18, 2025 · US
Organic compound, perovskite precursor solution, perovskite film, perovskite cell, and electric apparatus
US-2025386725-A1 · Dec 18, 2025 · US
Bisphosphites with a monoalkylphenol outer unit
US-2025382315-A1 · Dec 18, 2025 · US
Bisphosphites with a naphthol outer unit
US-2025382314-A1 · Dec 18, 2025 · US
Use of compound as electrolyte additive, electrolyte, battery and electrical apparatus
US-2025286139-A1 · Sep 11, 2025 · US
Phosphorous ester compound, method for producing same and use application for same
US-2024166672-A1 · May 23, 2024 · US
Novel Composition Of 7,9-Dodecadienyl-1-Acetate Isomers And Process For Production Thereof
US-2023234977-A1 · Jul 27, 2023 · US
Method for producing InP quantum dot precursor and method for producing InP-based quantum dot
US-11692134-B2 · Jul 4, 2023 · US
Composition of 7,9-dodecadienyl-1-acetate isomers and process for production thereof
US-11649257-B2 · May 16, 2023 · US
Phosphorus-containing compounds as additives for silicon-based li ion batteries
US-2023108463-A1 · Apr 6, 2023 · US
2h-benzopyran derivatives as crac inhibitors
US-2022380356-A1 · Dec 1, 2022 · US
Phosphorus-containing compounds as additives for silicon-based li ion batteries
US-11469449-B1 · Oct 11, 2022 · US
Electrolyte, lithium secondary battery including the electrolyte, and method of manufacturing the electrolyte
US-11411251-B2 · Aug 9, 2022 · US
METHOD FOR PRODUCING InP QUANTUM DOT PRECURSOR AND METHOD FOR PRODUCING InP-BASED QUANTUM DOT
US-2022195299-A1 · Jun 23, 2022 · US
Inhibitors of cellular metabolic processes
US-11325914-B1 · May 10, 2022 · US
Novel composition of 7,9-dodecadienyl-1-acetate isomers and process for production thereof
US-2020354387-A1 · Nov 12, 2020 · US
Inhibitors of cellular metabolic processes
US-10800782-B2 · Oct 13, 2020 · US
Electrolyte, lithium secondary battery including the electrolyte, and method of manufacturing the electrolyte
US-2020185775-A1 · Jun 11, 2020 · US
Lithium secondary battery including phosphite additive
US-10665897-B2 · May 26, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07F9/141?
- CPC C07F9/141 is the Cooperative Patent Classification code for “Esters of phosphorous acids.”
- How many patents are filed under CPC C07F9/141 (Esters of phosphorous acids)?
- Our database includes 52 publications tagged with this CPC code.
- Is patent activity under CPC C07F9/141 growing?
- Publication counts under this code: 1 in 2024 vs 6 in 2025 (latest complete years).