A Hydrogenation Catalyst, Its Method of Preparation and Use
US-2016199814-A1 · Jul 14, 2016 · US
Nitrogen compounds
Nitrogen compounds · 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 | B01J27/24 |
| Official title | Nitrogen compounds |
| Display label | Nitrogen compounds |
| Total patents | 749 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 56 |
| 2016 | 48 |
| 2017 | 58 |
| 2018 | 68 |
| 2019 | 81 |
| 2020 | 90 |
| 2021 | 71 |
| 2022 | 68 |
| 2023 | 53 |
| 2024 | 54 |
| 2025 | 88 |
| 2026 | 14 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Visible light responsive photocatalyst material
US-2016137496-A1 · May 19, 2016 · US
Composition for enhanced life time of charge carriers for solar hydrogen production from water splitting
US-2016107149-A1 · Apr 21, 2016 · US
Catalyst For Producing Methacrylic Acid And Method For Producing The Same, And Method For Producing Methacrylic Acid
US-2016051970-A1 · Feb 25, 2016 · US
Catalysts and methods for polyester production
US-2015368394-A1 · Dec 24, 2015 · US
Catalyst, production process therefor and use thereof
US-2015372311-A1 · Dec 24, 2015 · US
Heterogeneous metal-free catalyst
US-2015353464-A1 · Dec 10, 2015 · US
g-C3N4 FILM PRODUCTION METHOD, AND USE OF SAID FILM
US-2015352539-A1 · Dec 10, 2015 · US
Non-PGM Catalysts for Orr Based on Charge Transfer Organic Complexes
US-2015357652-A1 · Dec 10, 2015 · US
Method for Forming an Oxide Coated Substrate
US-2015343434-A1 · Dec 3, 2015 · US
Metal-carbon hybrid composite having nitrogen-doped carbon surface and method for manufacturing the same
US-2015343428-A1 · Dec 3, 2015 · US
Heterogeneously catalyzed chemical reduction of carbon dioxide
US-2015329459-A1 · Nov 19, 2015 · US
Catalyst, production process therefor, and use thereof
US-9190670-B2 · Nov 17, 2015 · US
Preparation and application of carbon nanoparticle diode
US-2015314276-A1 · Nov 5, 2015 · US
A catalyst composition and a catalytic process for conversion of biomass to crude bio oil
US-2015306575-A1 · Oct 29, 2015 · US
Non-precious metal catalysts prepared from precursor comprising cyanamide
US-9169140-B2 · Oct 27, 2015 · US
Methods and systems for the reduction of molecules using diamond as a photoreduction catalyst
US-2015299870-A1 · Oct 22, 2015 · US
Epimerisation of saccharides
US-2015291643-A1 · Oct 15, 2015 · US
Composition having an active metal or precursor, an amine component and a non-amine containing polar additive useful in the catalytic hydroprocessing of hydrocarbons, a method of making such catalyst, and a process of using such catalyst
US-9156029-B2 · Oct 13, 2015 · US
Exhaust gas catalyst carrier, exhaust gas catalyst employing the exhaust gas catalyst carrier, and method of manufacturing the exhaust gas catalyst carrier
US-9156027-B2 · Oct 13, 2015 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01J27/24?
- CPC B01J27/24 is the Cooperative Patent Classification code for “Nitrogen compounds.”
- How many patents are filed under CPC B01J27/24 (Nitrogen compounds)?
- Our database includes 749 publications tagged with this CPC code.
- Is patent activity under CPC B01J27/24 growing?
- Publication counts under this code: 54 in 2024 vs 88 in 2025 (latest complete years).