Endothermic reactions heated by resistance heating
US-2025121344-A1 · Apr 17, 2025 · US
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Preparation in gaseous phase
Preparation in gaseous phase · 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 | C01C3/0208 |
| Official title | {Preparation in gaseous phase} |
| Display label | Preparation in gaseous phase |
| Total patents | 12 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2016 | 2 |
| 2017 | 1 |
| 2018 | 1 |
| 2019 | 1 |
| 2020 | 1 |
| 2021 | 1 |
| 2022 | 2 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Cyanide on demand
US-12246970-B2 · Mar 11, 2025 · US
Endothermic reactions heated by resistance heating
US-12214327-B2 · Feb 4, 2025 · US
Cyanide on demand
US-2022259056-A1 · Aug 18, 2022 · US
Gas-tight, heat-permeable multilayer ceramic composite tube
US-2022152584-A1 · May 19, 2022 · US
Endothermic reactions heated by resistance heating
US-2021113983-A1 · Apr 22, 2021 · US
Method for removing nitriles from hydrogen cyanide
US-10562782-B2 · Feb 18, 2020 · US
Method for preparing alpha-hydroxycarboxylic acid esters in which ammonia is recycled
US-10227284-B2 · Mar 12, 2019 · US
Method for removing nitriles from hydrogen cyanide
US-2018194640-A1 · Jul 12, 2018 · US
Method for preparing alpha-hydroxycarboxylic acid esters in which ammonia is recycled
US-2017283364-A1 · Oct 5, 2017 · US
Hydrogen cyanide production with treated natural gas as source or methane-containing feedstock
US-2016194210-A1 · Jul 7, 2016 · US
Integrated plant and method for the flexible use of electricity
US-2016122194-A1 · May 5, 2016 · US