Preparation method of phosphotungstic acid
US-11214495-B2 · Jan 4, 2022 · US
Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C01G41/003 |
| Official title | {Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange} |
| Display label | Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange |
| Total patents | 4 |
Year-over-year patent counts classified under this CPC code.
Filing activity appears stable based on the most recent years.
| Year | Patents |
|---|---|
| 2016 | 2 |
| 2019 | 1 |
| 2022 | 1 |
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
US-11214495-B2 · Jan 4, 2022 · US
US-2019185341-A1 · Jun 20, 2019 · US
US-9512504-B2 · Dec 6, 2016 · US
US-9249479-B2 · Feb 2, 2016 · US