Heterogeneous catalysts for the direct carbonylation of nitro aromatic compounds to isocyanates
US-12415780-B2 · Sep 16, 2025 · US
with lead
with lead · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B01J23/628 |
| Official title | {with lead} |
| Display label | with lead |
| Total patents | 43 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 7 |
| 2016 | 3 |
| 2017 | 4 |
| 2018 | 5 |
| 2019 | 5 |
| 2020 | 7 |
| 2021 | 3 |
| 2022 | 4 |
| 2023 | 3 |
| 2024 | 1 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method of producing hydrofluoroolefin
US-12139445-B2 · Nov 12, 2024 · US
Catalyst for production of carboxylic acid ester and method for producing carboxylic acid ester
US-2023311103-A1 · Oct 5, 2023 · US
Processes for upgrading alkanes and alkyl aromatic hydrocarbons
US-11760702-B2 · Sep 19, 2023 · US
Heterogeneous catalysts for the direct carbonylation of nitro aromatic compounds to isocyanates
US-2023131205-A1 · Apr 27, 2023 · US
Dehydrogenation catalyst
US-2022379287-A1 · Dec 1, 2022 · US
Heterogeneous catalysts for the direct carbonylation of nitro aromatic compounds to isocyanates
US-11512046-B2 · Nov 29, 2022 · US
Processes for catalytically coating scaffolds
US-2022362752-A1 · Nov 17, 2022 · US
Method of producing hydrofluoroolefin
US-2022267236-A1 · Aug 25, 2022 · US
Processes for Upgrading Alkanes and Alkyl Aromatic Hydrocarbons
US-2021276002-A1 · Sep 9, 2021 · US
Catalyst for producing light aromatics with heavy aromatics, method for preparing the catalyst, and use thereof
US-11065604-B2 · Jul 20, 2021 · US
Heterogeneous catalysts for the direct carbonylation of nitro aromatic compounds to isocyanates
US-2021002210-A1 · Jan 7, 2021 · US
Palladium-based supported hydrogenation catalyst, and preparation method and application thereof
US-10800717-B2 · Oct 13, 2020 · US
Process for producing hydrofluoroolefin
US-10781151-B2 · Sep 22, 2020 · US
Catalyst and process for the selective conversion of hydrocarbons
US-10737244-B2 · Aug 11, 2020 · US
Processes for regenerating a catalyst for the selective conversion of hydrocarbons
US-10682628-B2 · Jun 16, 2020 · US
Process for regenerating a catalyst for the selective conversion of hydrocarbons
US-10682629-B2 · Jun 16, 2020 · US
Core shell
US-10675681-B2 · Jun 9, 2020 · US
Catalyst and process for the selective conversion of hydrocarbons
US-10646855-B2 · May 12, 2020 · US
Processes for regenerating a catalyst for the selective conversion of hydrocarbons
US-2019126251-A1 · May 2, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01J23/628?
- CPC B01J23/628 is the Cooperative Patent Classification code for “with lead.”
- How many patents are filed under CPC B01J23/628 (with lead)?
- Our database includes 43 publications tagged with this CPC code.
- Is patent activity under CPC B01J23/628 growing?
- Publication counts under this code: 1 in 2024 vs 1 in 2025 (latest complete years).