Chiral spirocyclic compounds and methods of preparation and use thereof
US-2025229262-A1 · Jul 17, 2025 · US
the cyclic phosphorus atom belonging to more than one ring system
the cyclic phosphorus atom belonging to more than one ring system · 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 | C07F9/65748 |
| Official title | {the cyclic phosphorus atom belonging to more than one ring system} |
| Display label | the cyclic phosphorus atom belonging to more than one ring system |
| Total patents | 43 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2016 | 3 |
| 2017 | 5 |
| 2018 | 3 |
| 2019 | 10 |
| 2020 | 5 |
| 2021 | 5 |
| 2022 | 3 |
| 2024 | 4 |
| 2025 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Lithium iron phosphate and preparation method and application thereof, and ammonium salt compound and application thereof
US-2025230046-A1 · Jul 17, 2025 · US
Liquid Electrolyte Composition Comprising a Salt, Electrochemical Cell Comprising the Electrolyte Composition, Salt, and Use of the Salt in the Electrochemical Cell
US-2025201926-A1 · Jun 19, 2025 · US
Electrolyte additive for lithium secondary battery, electrolyte for lithium secondary battery including the same, and lithium secondary battery
US-2025112279-A1 · Apr 3, 2025 · US
Electrolyte additive for lithium secondary battery, electrolyte for lithium secondary battery including the same, and lithium secondary battery
US-12266762-B2 · Apr 1, 2025 · US
Methods of preparing chiral amino acids
US-2024383842-A1 · Nov 21, 2024 · US
Compound, and lithium secondary battery electrolyte and lithium secondary battery which comprise same
US-12100808-B2 · Sep 24, 2024 · US
Nonaqueous electrolyte secondary battery
US-2024291033-A1 · Aug 29, 2024 · US
Electrolyte and secondary battery including the same
US-2024128510-A1 · Apr 18, 2024 · US
Organic electrolytic solution and lithium battery including the same
US-2022407113-A1 · Dec 22, 2022 · US
Electrolyte additive for lithium secondary battery, electrolyte for lithium secondary battery including the same, and lithium secondary battery
US-2022263131-A1 · Aug 18, 2022 · US
Compound, and lithium secondary battery electrolyte and lithium secondary battery which comprise same
US-2022158238-A1 · May 19, 2022 · US
Crystal of cyclic phosphonic acid sodium salt and method for manufacturing same
US-11168101-B2 · Nov 9, 2021 · US
Nonaqueous electrolytic solution and nonaqueous electrolytic solution secondary battery
US-11101499-B2 · Aug 24, 2021 · US
Composition and fire-retardant resin composition
US-2021171833-A1 · Jun 10, 2021 · US
Crystal of cyclic phosphonic acid sodium salt and method for manufacturing same
US-10941169-B2 · Mar 9, 2021 · US
Electrolyte and electrochemical energy storage device
US-10886565-B2 · Jan 5, 2021 · US
Electrolyte comprising phthalate phosphine-based anions, additive for secondary battery comprising same, and secondary battery comprising same
US-10797347-B2 · Oct 6, 2020 · US
Crystal of cyclic phosphonic acid sodium salt and method for manufacturing same
US-10774100-B2 · Sep 15, 2020 · US
Crystal of cyclic phosphonic acid sodium salt and method for manufacturing same
US-2020277317-A1 · Sep 3, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07F9/65748?
- CPC C07F9/65748 is the Cooperative Patent Classification code for “the cyclic phosphorus atom belonging to more than one ring system.”
- How many patents are filed under CPC C07F9/65748 (the cyclic phosphorus atom belonging to more than one ring system)?
- Our database includes 43 publications tagged with this CPC code.
- Is patent activity under CPC C07F9/65748 growing?
- Publication counts under this code: 4 in 2024 vs 5 in 2025 (latest complete years).