Diphosphine compounds and complexes
US-2025215027-A1 · Jul 3, 2025 · US
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Separation; Purification; Stabilisation
Separation; Purification; Stabilisation · 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 | C07F9/5095 |
| Official title | {Separation; Purification; Stabilisation} |
| Display label | Separation; Purification; Stabilisation |
| Total patents | 8 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2019 | 1 |
| 2022 | 3 |
| 2023 | 1 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for purifying phosphorus-containing olefin compound salt and method for producing olefin compound using purified product obtained thereby
US-12258364-B2 · Mar 25, 2025 · US
Method for preparing sulfonated arylphosphine
US-2023416285-A1 · Dec 28, 2023 · US
Optically active bisphosphinomethane, method for producing the same, and transition metal complex and asymmetric catalyst
US-11498935-B2 · Nov 15, 2022 · US
Optically active bisphosphinomethane, method for producing the same, and transition metal complex and asymmetric catalyst
US-2022204537-A1 · Jun 30, 2022 · US
Method for purifying phosphorus-containing olefin compound salt and method for producing olefin compound using purified product obtained thereby
US-2022144864-A1 · May 12, 2022 · US
Simultaneous recovery of organic compounds and extractants
US-10265641-B2 · Apr 23, 2019 · US
Method for purifying a crude PNPNH compound
US-9206207-B2 · Dec 8, 2015 · US