Method of producing polyamine compound and application thereof
US-12497357-B2 · Dec 16, 2025 · US
of urea, its salts, complexes or addition compounds
of urea, its salts, complexes or addition compounds · 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 | C07C273/02 |
| Official title | of urea, its salts, complexes or addition compounds |
| Display label | of urea, its salts, complexes or addition compounds |
| Total patents | 69 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 4 |
| 2017 | 4 |
| 2018 | 4 |
| 2019 | 5 |
| 2020 | 11 |
| 2021 | 10 |
| 2022 | 2 |
| 2023 | 8 |
| 2024 | 8 |
| 2025 | 6 |
| 2026 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Coupled urea melamine plant
US-12319662-B2 · Jun 3, 2025 · US
Removal of dust in urea finishing
US-12179138-B2 · Dec 31, 2024 · US
Urea synthesis from greenhouse gas and nitrogen via transition metal-free catalysis over graphitic carbon nitride
US-2024368074-A1 · Nov 7, 2024 · US
Process for producing feed-grade urea
US-12116335-B2 · Oct 15, 2024 · US
Coupled urea melamine plant
US-2024327358-A1 · Oct 3, 2024 · US
Distribution chamber for liquid stream
US-12102938-B2 · Oct 1, 2024 · US
Plant and method for producing urea granules
US-2024182377-A1 · Jun 6, 2024 · US
Method and reactor for producing urea ammonium sulphate
US-11993557-B2 · May 28, 2024 · US
Urea prilling process
US-2024002335-A1 · Jan 4, 2024 · US
Method and system for preparing urea by coupling denitration with electrocatalytic reduction
US-2023391716-A1 · Dec 7, 2023 · US
Distribution chamber for liquid stream
US-2023330557-A1 · Oct 19, 2023 · US
Process for producing feed-grade urea
US-2023303485-A1 · Sep 28, 2023 · US
Method of producing polyamine compound and application thereof
US-2023286897-A1 · Sep 14, 2023 · US
Method to produce a urea ammonium sulphate-based composition
US-2023219885-A1 · Jul 13, 2023 · US
Solid forms of fasoracetam
US-2023203001-A1 · Jun 29, 2023 · US
Method of producing thiourethane resin raw material and application thereof, method of producing polythiol composition and application thereof, and polythiol composition
US-2023088165-A1 · Mar 23, 2023 · US
Solid forms of fasoracetam
US-11608324-B2 · Mar 21, 2023 · US
Method for catalytically producing urea
US-2022234999-A1 · Jul 28, 2022 · US
Catalyst for the catalytic synthesis of urea
US-2022219156-A1 · Jul 14, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07C273/02?
- CPC C07C273/02 is the Cooperative Patent Classification code for “of urea, its salts, complexes or addition compounds.”
- How many patents are filed under CPC C07C273/02 (of urea, its salts, complexes or addition compounds)?
- Our database includes 69 publications tagged with this CPC code.
- Is patent activity under CPC C07C273/02 growing?
- Publication counts under this code: 8 in 2024 vs 6 in 2025 (latest complete years).