Process for producing isocyanates
US-12497352-B2 · Dec 16, 2025 · US
Carbamic acid halides · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C07C271/04 |
| Official title | Carbamic acid halides |
| Display label | Carbamic acid halides |
| Total patents | 13 |
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2016 | 2 |
| 2017 | 2 |
| 2018 | 1 |
| 2019 | 1 |
| 2020 | 1 |
| 2021 | 1 |
| 2023 | 2 |
| 2024 | 1 |
| 2025 | 2 |
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
US-12497352-B2 · Dec 16, 2025 · US
US-2025074879-A1 · Mar 6, 2025 · US
US-12180163-B2 · Dec 31, 2024 · US
US-2023312462-A1 · Oct 5, 2023 · US
US-2023049481-A1 · Feb 16, 2023 · US
US-11155520-B2 · Oct 26, 2021 · US
US-2020399222-A1 · Dec 24, 2020 · US
US-2019276404-A1 · Sep 12, 2019 · US
US-10072113-B2 · Sep 11, 2018 · US
US-9656952-B2 · May 23, 2017 · US
US-9561512-B2 · Feb 7, 2017 · US
US-2016168295-A1 · Jun 16, 2016 · US
US-2016159733-A1 · Jun 9, 2016 · US