Enhanced Machine Learning for Iron-Based Oligomerization of Ethylene K-Value Prediction
US-2025349393-A1 · Nov 13, 2025 · US
Phosphoranes containing the structure P=N-
Phosphoranes containing the structure P=N- · 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 | C07F9/5355 |
| Official title | {Phosphoranes containing the structure P=N-} |
| Display label | Phosphoranes containing the structure P=N- |
| Total patents | 47 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 10 |
| 2016 | 2 |
| 2017 | 3 |
| 2018 | 7 |
| 2019 | 5 |
| 2020 | 5 |
| 2021 | 1 |
| 2022 | 1 |
| 2023 | 2 |
| 2024 | 4 |
| 2025 | 7 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Enhanced Iron-Based Oligomerization of Ethylene Using Machine Learning-Based K-Value Prediction
US-2025349392-A1 · Nov 13, 2025 · US
Phosphino-Quinoline-Pyridine Ligands and Methods
US-2025346619-A1 · Nov 13, 2025 · US
Organometallic complex, olefin polymerization catalyst system and polymerization process
US-2025326776-A1 · Oct 23, 2025 · US
Organometallic complex, olefin polymerization catalyst system and polymerization process
US-2025257084-A1 · Aug 14, 2025 · US
Photoacid generator for chemically amplified photoresists for deep ultra violet and extreme ultraviolet lithography
US-12306535-B2 · May 20, 2025 · US
Organometallic complex, olefin polymerization catalyst system and polymerization process
US-12275751-B2 · Apr 15, 2025 · US
Bis-phosphinimide catalysts for olefin polymerization
US-12146012-B2 · Nov 19, 2024 · US
Organometallic complex, olefin polymerization catalyst system and polymerization process
US-2024294560-A1 · Sep 5, 2024 · US
Organometallic complex, olefin polymerization catalyst system and polymerization process
US-11999763-B2 · Jun 4, 2024 · US
Organometallic complex, olefin polymerization catalyst system and polymerization process
US-2024124502-A1 · Apr 18, 2024 · US
Additive for non-aqueous electrolyte solution, non-aqueous electrolyte solution, and non-aqueous electrolyte solution battery
US-11757130-B2 · Sep 12, 2023 · US
Photoacid generator for chemically amplified photoresists for deep ultraviolet and extreme ultraviolet lithography
US-2023229077-A1 · Jul 20, 2023 · US
New bis-phosphinimide catalysts for olefin polymerization
US-2022169763-A1 · Jun 2, 2022 · US
Phosphinimine amido-ether complexes
US-11180581-B2 · Nov 23, 2021 · US
Transition metal complexes, catalyst compositions including the same, and method for preparing polyolefins therewith
US-10800863-B2 · Oct 13, 2020 · US
Additive for non-aqueous electrolyte solution, non-aqueous electrolyte solution, and non-aqueous electrolyte solution battery
US-2020287241-A1 · Sep 10, 2020 · US
Phosphinimine amido-ether complexes
US-10669355-B2 · Jun 2, 2020 · US
Hydrosilylation process using a germylene-based organic catalyst
US-10662208-B2 · May 26, 2020 · US
Catalysts and methods for polymer synthesis
US-10662211-B2 · May 26, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07F9/5355?
- CPC C07F9/5355 is the Cooperative Patent Classification code for “Phosphoranes containing the structure P=N-.”
- How many patents are filed under CPC C07F9/5355 (Phosphoranes containing the structure P=N-)?
- Our database includes 47 publications tagged with this CPC code.
- Is patent activity under CPC C07F9/5355 growing?
- Publication counts under this code: 4 in 2024 vs 7 in 2025 (latest complete years).