Red mud as a catalyst for the isomerization of olefins
US-2021387929-A1 · Dec 16, 2021 · US
with alkali- or alkaline earth metals or beryllium
with alkali- or alkaline earth metals or beryllium · 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 | C07C2523/78 |
| Official title | with alkali- or alkaline earth metals or beryllium |
| Display label | with alkali- or alkaline earth metals or beryllium |
| Total patents | 109 |
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 | 3 |
| 2016 | 5 |
| 2017 | 10 |
| 2018 | 9 |
| 2019 | 12 |
| 2020 | 12 |
| 2021 | 18 |
| 2022 | 17 |
| 2023 | 10 |
| 2024 | 8 |
| 2025 | 3 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Parallel Reactor System for Ethylbenzene Dehydrogenation
US-2021284587-A1 · Sep 16, 2021 · US
System for producing 1,3-butadiene and method of producing 1,3-butadiene using the system
US-11078135-B2 · Aug 3, 2021 · US
Highly efficient nanosized mesoporous CuMgAl ternary oxide catalyst
US-11045792-B1 · Jun 29, 2021 · US
Single-atom-based catalyst systems
US-2021187489-A1 · Jun 24, 2021 · US
Systems and processes for maintaining ethylbenzene dehydration catalyst activity
US-10961169-B2 · Mar 30, 2021 · US
Multistage Nanoreactor Catalyst and Preparation and Application Thereof
US-2021070672-A1 · Mar 11, 2021 · US
Process for oligomerization of olefins with optimized distillation
US-2021053891-A1 · Feb 25, 2021 · US
Process for oligomerization of olefins with optimized distillation
US-2021053892-A1 · Feb 25, 2021 · US
Multistage nanoreactor catalyst and preparation and application thereof
US-10875817-B2 · Dec 29, 2020 · US
Process for oligomerization with stage-customized exchange of the oligomerization catalyst
US-10865164-B2 · Dec 15, 2020 · US
Hydrodeoxygenation of lignin to hydrocarbons using bimetallic catalysts
US-2020377803-A1 · Dec 3, 2020 · US
Systems and processes for maintaining ethylbenzene dehydration catalyst activity
US-2020331825-A1 · Oct 22, 2020 · US
Process for oligomerizing olefins with streams having a reduced olefin content
US-10793488-B2 · Oct 6, 2020 · US
Oxygen-free direct conversion of methane and catalysts therefor
US-10702854-B2 · Jul 7, 2020 · US
Process for Oligomerization with Stage-customized Exchange of the Oligomerization Catalyst
US-2020189993-A1 · Jun 18, 2020 · US
System for producing 1,3-butadiene and method of producing 1,3-butadiene using the system
US-2020181043-A1 · Jun 11, 2020 · US
Process for oligomerizing olefins with streams having a reduced olefin content
US-2020123080-A1 · Apr 23, 2020 · US
Catalytic body coated with metal oxide, method of manufacturing the same, and method of preparing 1,3-butadiene using the same
US-10604459-B2 · Mar 31, 2020 · US
Materials and methods for oxidative dehydrogenation of alkyl aromatic compounds involving lattice oxygen of transition metal oxides
US-2020009539-A1 · Jan 9, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07C2523/78?
- CPC C07C2523/78 is the Cooperative Patent Classification code for “with alkali- or alkaline earth metals or beryllium.”
- How many patents are filed under CPC C07C2523/78 (with alkali- or alkaline earth metals or beryllium)?
- Our database includes 109 publications tagged with this CPC code.
- Is patent activity under CPC C07C2523/78 growing?
- Publication counts under this code: 8 in 2024 vs 3 in 2025 (latest complete years).