Non-aqueous electrolytes for electrochemical cells
US-2025233210-A1 · Jul 17, 2025 · US
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Metal derivatives of a hydroxy group bound to a six-membered aromatic ring
Metal derivatives of a hydroxy group bound to a six-membered aromatic ring · 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 | C07C39/235 |
| Official title | Metal derivatives of a hydroxy group bound to a six-membered aromatic ring |
| Display label | Metal derivatives of a hydroxy group bound to a six-membered aromatic ring |
| Total patents | 16 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2016 | 1 |
| 2017 | 2 |
| 2018 | 2 |
| 2019 | 4 |
| 2021 | 2 |
| 2023 | 3 |
| 2024 | 1 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Sulfurized additives with low levels of alkyl phenols
US-11976250-B2 · May 7, 2024 · US
Bioactive phenolate ionic complexes
US-2023234934-A1 · Jul 27, 2023 · US
Sulfurized additives with low levels of alkyl phenols
US-2023235241-A1 · Jul 27, 2023 · US
Sulfurized additives with low levels of alkyl phenols
US-11572523-B1 · Feb 7, 2023 · US
Initiator system for cationic polymerization of olefins
US-11168100-B2 · Nov 9, 2021 · US
Initiator system for cationic polymerization of olefins
US-2021171550-A1 · Jun 10, 2021 · US
Amination and hydroxylation of arylmetal compounds
US-10494328-B2 · Dec 3, 2019 · US
Polyetherimide of improved color and process of preparing
US-10435511-B2 · Oct 8, 2019 · US
Phosphonium-based compound, epoxy resin composition containing same, semiconductor device manufactured using same
US-10385161-B2 · Aug 20, 2019 · US
Processes for forming titanium catechol complexes
US-10343964-B2 · Jul 9, 2019 · US
Polyetherimide of improved color and process of preparing
US-2018127546-A1 · May 10, 2018 · US
Phthalonitriles derived from polyphenols
US-9920165-B2 · Mar 20, 2018 · US
Phosphonium-based compound, epoxy resin composition containing same, semiconductor device manufactured using same
US-2017306079-A1 · Oct 26, 2017 · US
Methods of manufacture of salts of hydroxy-substituted aromatic compounds and polyetherimides
US-9777118-B2 · Oct 3, 2017 · US
Phthalonitriles derived from polyphenols
US-2016311976-A1 · Oct 27, 2016 · US