Integrated process and plant for production of urea and UAS (urea-ammonium sulphate) mixtures
US-10870584-B2 · Dec 22, 2020 · US
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 | C07C273/16 |
| Official title | Separation; Purification |
| Display label | Separation; Purification |
| Total patents | 153 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 7 |
| 2017 | 8 |
| 2018 | 8 |
| 2019 | 26 |
| 2020 | 25 |
| 2021 | 13 |
| 2022 | 16 |
| 2023 | 10 |
| 2024 | 22 |
| 2025 | 12 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Urea process with high-temperature stripping
US-10781167-B2 · Sep 22, 2020 · US
Controlling biuret in urea production
US-10766856-B2 · Sep 8, 2020 · US
Urea production process and plant
US-10759745-B2 · Sep 1, 2020 · US
Submicron particle removal from gas streams
US-10722831-B2 · Jul 28, 2020 · US
Method for producing solid urea by granulation
US-2020215507-A1 · Jul 9, 2020 · US
Method of making a urea product
US-10633331-B2 · Apr 28, 2020 · US
Controlling biuret in urea production
US-2020095196-A1 · Mar 26, 2020 · US
Process for integrated production of urea and urea-ammonium nitrate
US-10550075-B2 · Feb 4, 2020 · US
Urea production method
US-10519103-B2 · Dec 31, 2019 · US
Method for cleaning the exhaust air of a granulating system for producing a urea-containing granulate
US-2019388835-A1 · Dec 26, 2019 · US
Submicron particle removal from gas streams
US-2019388823-A1 · Dec 26, 2019 · US
A process and system to capture ammonia from a purge gas of a urea plant
US-2019375649-A1 · Dec 12, 2019 · US
Submicron particle removal from gas streams
US-10500535-B2 · Dec 10, 2019 · US
Urea production with controlled biuret
US-2019359559-A1 · Nov 28, 2019 · US
A process for integrated production of urea and urea-ammonium nitrate
US-2019359558-A1 · Nov 28, 2019 · US
Urea finishing process with acid scrubbing
US-10486125-B2 · Nov 26, 2019 · US
Process for the production of formaldehyde-stabilized urea
US-10479761-B2 · Nov 19, 2019 · US
Urea production with controlled biuret
US-10457633-B2 · Oct 29, 2019 · US
Urea ammonium nitrate production comprising condensation
US-2019276392-A1 · Sep 12, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07C273/16?
- CPC C07C273/16 is the Cooperative Patent Classification code for “Separation; Purification.”
- How many patents are filed under CPC C07C273/16 (Separation; Purification)?
- Our database includes 153 publications tagged with this CPC code.
- Is patent activity under CPC C07C273/16 growing?
- Publication counts under this code: 22 in 2024 vs 12 in 2025 (latest complete years).