Phosphonate-Based Coordination Complexes and Methods of Preparation and Use Thereof
US-2025296942-A1 · Sep 25, 2025 · US
Polyphosphonic acids
Polyphosphonic 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 | C07F9/3839 |
| Official title | {Polyphosphonic acids} |
| Display label | Polyphosphonic acids |
| Total patents | 32 |
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 | 2 |
| 2018 | 1 |
| 2019 | 3 |
| 2020 | 4 |
| 2021 | 5 |
| 2022 | 2 |
| 2023 | 2 |
| 2024 | 5 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Brush polymer terminated with phosphonate for dsa
US-2025230265-A1 · Jul 17, 2025 · US
Brush polymer terminated with phosphonate for DSA
US-12286503-B2 · Apr 29, 2025 · US
Supercapacitors comprising phosphonate and arsonate metal organic frameworks (MOFs) as active electrode materials
US-12170168-B2 · Dec 17, 2024 · US
Electrochromic element
US-12091612-B2 · Sep 17, 2024 · US
Phosphonates and n-halamines compositions for tartar removal
US-2024091121-A1 · Mar 21, 2024 · US
Phosphonate linkers and their use to facilitate cellular retention of compounds
US-11883500-B2 · Jan 30, 2024 · US
Brush polymer terminated with phosphonate for dsa
US-2024010865-A1 · Jan 11, 2024 · US
Phosphonate linkers and their use to faciliate cellular retention of compounds
US-2023147502-A1 · May 11, 2023 · US
Phosphonate linkers and their use to facilitate cellular retention of compounds
US-11554172-B2 · Jan 17, 2023 · US
Electronic switching element
US-11522141-B2 · Dec 6, 2022 · US
Supercapacitors comprising phosphonate and arsonate metal organic frameworks (mofs) as active electrode materials
US-2022293350-A1 · Sep 15, 2022 · US
Electrochromic element
US-2021301197-A1 · Sep 30, 2021 · US
Electronic switching element
US-2021292651-A1 · Sep 23, 2021 · US
Electronic switching element
US-11063227-B2 · Jul 13, 2021 · US
Novel peroxide stabilizers
US-2021061659-A1 · Mar 4, 2021 · US
Phosphonate linkers and their use to facilitate cellular retention of compounds
US-2021015930-A1 · Jan 21, 2021 · US
Process for synthesizing azo compounds
US-2020407312-A1 · Dec 31, 2020 · US
Phosphonate linkers and their use to facilitate cellular retention of compounds
US-10869929-B2 · Dec 22, 2020 · US
Peroxide stabilizers
US-10858249-B2 · Dec 8, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07F9/3839?
- CPC C07F9/3839 is the Cooperative Patent Classification code for “Polyphosphonic acids.”
- How many patents are filed under CPC C07F9/3839 (Polyphosphonic acids)?
- Our database includes 32 publications tagged with this CPC code.
- Is patent activity under CPC C07F9/3839 growing?
- Publication counts under this code: 5 in 2024 vs 3 in 2025 (latest complete years).