Method for preparing methionine
US-10899706-B2 · Jan 26, 2021 · US
from hydrocarbons and ammonia in the presence of oxygen, e.g. the Andrussow-process
from hydrocarbons and ammonia in the presence of oxygen, e.g. the Andrussow-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 | C01C3/0212 |
| Official title | {from hydrocarbons and ammonia in the presence of oxygen, e.g. the Andrussow-process} |
| Display label | from hydrocarbons and ammonia in the presence of oxygen, e.g. the Andrussow-process |
| Total patents | 32 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 8 |
| 2016 | 9 |
| 2017 | 2 |
| 2018 | 5 |
| 2019 | 1 |
| 2020 | 6 |
| 2021 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Gas-tight, heat-permeable multilayer ceramic composite tube
US-10865151-B2 · Dec 15, 2020 · US
Installation and process for the preparation of hydrogen cyanide
US-10865118-B2 · Dec 15, 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
Reactor for preparing hydrogen cyanide by the andrussow process, equipment comprising said reactor and process using such an equipment
US-10597302-B2 · Mar 24, 2020 · 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
Installation and process for the preparation of hydrogen cyanide
US-2018215626-A1 · Aug 2, 2018 · US
High purity hcn from acrylonitrile co-production
US-2018208548-A1 · Jul 26, 2018 · US
Method for removing nitriles from hydrogen cyanide
US-2018194640-A1 · Jul 12, 2018 · US
Gas-tight, heat-permeable multilayer ceramic composite tube
US-2018134629-A1 · May 17, 2018 · US
Installation and process for the preparation of hydrogen cyanide
US-9944533-B2 · Apr 17, 2018 · US
C-11 cyanide production system
US-9821285-B2 · Nov 21, 2017 · US
Method for preparing alpha-hydroxycarboxylic acid esters in which ammonia is recycled
US-2017283364-A1 · Oct 5, 2017 · US
Operational controls for inert gas blanketing for andrussow process
US-2016194211-A1 · Jul 7, 2016 · US
Hydrogen cyanide production with treated natural gas as source or methane-containing feedstock
US-2016194210-A1 · Jul 7, 2016 · US
Installation and process for the preparation of hydrogen cyanide
US-2016194212-A1 · Jul 7, 2016 · US
Reactor for preparing hydrogen cyanide by the andrussow process, equipment comprising said reactor and process using such an equipment
US-2016152484-A1 · Jun 2, 2016 · US
Process for heat recovery from ammonia stripper in andrussow process
US-2016068404-A1 · Mar 10, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C01C3/0212?
- CPC C01C3/0212 is the Cooperative Patent Classification code for “from hydrocarbons and ammonia in the presence of oxygen, e.g. the Andrussow-process.”
- How many patents are filed under CPC C01C3/0212 (from hydrocarbons and ammonia in the presence of oxygen, e.g. the Andrussow-process)?
- Our database includes 32 publications tagged with this CPC code.
- Is patent activity under CPC C01C3/0212 growing?
- Publication counts under this code: 6 in 2020 vs 1 in 2021 (latest complete years).