Cyanide on demand
US-12246970-B2 · Mar 11, 2025 · US
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from hydrocarbons and ammonia in the absence of oxygen, e.g. HMA-process
from hydrocarbons and ammonia in the absence of oxygen, e.g. HMA-process · 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 | C01C3/0229 |
| Official title | {from hydrocarbons and ammonia in the absence of oxygen, e.g. HMA-process} |
| Display label | from hydrocarbons and ammonia in the absence of oxygen, e.g. HMA-process |
| Total patents | 20 |
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 | 2 |
| 2016 | 3 |
| 2017 | 4 |
| 2018 | 1 |
| 2019 | 3 |
| 2020 | 3 |
| 2021 | 1 |
| 2022 | 1 |
| 2024 | 1 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for producing hydrogen cyanide
US-11897781-B2 · Feb 13, 2024 · US
Cyanide on demand
US-2022259056-A1 · Aug 18, 2022 · US
Method for preparing methionine
US-10899706-B2 · Jan 26, 2021 · US
Process for the catalytic preparation of hydrogen cyanide from methane and ammonia
US-10710057-B2 · Jul 14, 2020 · US
High purity HCN from acrylonitrile co-production
US-10647663-B2 · May 12, 2020 · US
Method for preparing methionine
US-2020115334-A1 · Apr 16, 2020 · US
Reaction tube and method for producing hydrogen cyanide
US-10441942-B2 · Oct 15, 2019 · US
Method for producing hydrogen cyanide
US-2019225501-A1 · Jul 25, 2019 · US
Process for the catalytic preparation of hydrogen cyanide from methane and ammonia
US-2019091664-A1 · Mar 28, 2019 · US
High purity hcn from acrylonitrile co-production
US-2018208548-A1 · Jul 26, 2018 · US
C-11 cyanide production system
US-9821285-B2 · Nov 21, 2017 · US
Method for producing alpha-hydroxy carboxylic esters in the gas phase
US-9809530-B2 · Nov 7, 2017 · US
Process for the catalytic preparation of hydrogen cyanide from methane and ammonia
US-2017246617-A1 · Aug 31, 2017 · US
Method for producing alpha-hydroxy carboxylic esters in the gas phase
US-2017144960-A1 · May 25, 2017 · US
Reaction tube and method for producing hydrogen cyanide
US-2016263558-A1 · Sep 15, 2016 · US
Reaction tube and method for producing hydrogen cyanide
US-2016145114-A1 · May 26, 2016 · US
Integrated installation and method for flexibly using electricity
US-2016108809-A1 · Apr 21, 2016 · US
C-11 Cyanide Production System
US-2015217249-A1 · Aug 6, 2015 · US
C-11 cyanide production system
US-8932551-B2 · Jan 13, 2015 · US