Pyrimidine derivative
US-11034659-B2 · Jun 15, 2021 · US
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Separation; Purification
Separation; Purification · 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 | C07D501/12 |
| Official title | Separation; Purification |
| Display label | Separation; Purification |
| Total patents | 9 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity appears stable based on the most recent years.
| Year | Patents |
|---|---|
| 2017 | 6 |
| 2018 | 1 |
| 2020 | 1 |
| 2021 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Pyrimidine derivative
US-2020172494-A1 · Jun 4, 2020 · US
Novel industrial crystallization method of cefuroxime sodium and preparation thereof
US-2018111949-A1 · Apr 26, 2018 · US
Novel crystalline form of cefamandole nafate compound, preparation and preparing method thereof
US-2017349609-A1 · Dec 7, 2017 · US
Crystalline form of cefamandole nafate compound, preparation and preparing method thereof
US-9834567-B1 · Dec 5, 2017 · US
Novel industrial crystallization method of cefuroxime sodium and preparation thereof
US-2017158711-A1 · Jun 8, 2017 · US
Crystal form of Cefathiamidine compound and preparation method therefor
US-9637502-B2 · May 2, 2017 · US
New crystalline form of cefamandole sodium compound, formulation and preparation method thereof
US-2017050982-A1 · Feb 23, 2017 · US
New crystal form of cefathiamidine compound and preparation method therefor
US-2017044184-A1 · Feb 16, 2017 · US