Catalytic composition and process for oligomerizing ethylene into 1-hexene
US-10150108-B2 · Dec 11, 2018 · US
of chromium, molybdenum or tungsten
of chromium, molybdenum or tungsten · 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 | B01J31/34 |
| Official title | of chromium, molybdenum or tungsten |
| Display label | of chromium, molybdenum or tungsten |
| Total patents | 199 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 12 |
| 2016 | 14 |
| 2017 | 18 |
| 2018 | 16 |
| 2019 | 25 |
| 2020 | 27 |
| 2021 | 23 |
| 2022 | 24 |
| 2023 | 16 |
| 2024 | 11 |
| 2025 | 10 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Composite catalyst for the photocatalytic isomerisation of norbornadiene to prepare quadricyclane and process for making the catalyst
US-10137443-B2 · Nov 27, 2018 · US
Ligand compound, catalyst system for olefin oligomerization, and method for oligomerizing olefins using the same
US-10131723-B2 · Nov 20, 2018 · US
Hydroprocessing catalysts and their production
US-2018264450-A1 · Sep 20, 2018 · US
Process for deactivation of an olefin oligomerization catalyst
US-2018258009-A1 · Sep 13, 2018 · US
Hydroprocessing catalysts and their production
US-10022712-B2 · Jul 17, 2018 · US
Mixed oxides of transition metals, hydrotreatment catalysts obtained therefrom and preparation process
US-10005071-B2 · Jun 26, 2018 · US
Supported catalyst, its activated form, and their preparation and use
US-2018169632-A1 · Jun 21, 2018 · US
Hydroprocessing catalyst and method for preparing same
US-2018154343-A1 · Jun 7, 2018 · US
Chromium-Based Olefin Polymerization Catalysts
US-2018155462-A1 · Jun 7, 2018 · US
Hydrodesulfurization catalyst for diesel oil and hydrotreating method for diesel oil
US-9987622-B2 · Jun 5, 2018 · US
CATALYST BASED ON y-KETOVALERIC ACID AND USE THEREOF IN A HYDROTREATMENT AND/OR HYDROCRACKING PROCESS
US-2018133706-A1 · May 17, 2018 · US
Catalyst system for olefin oligomerization and method for olefin oligomerization using the same
US-2018127333-A1 · May 10, 2018 · US
Continuous preparation method of high-purity quadricyclane
US-9944574-B2 · Apr 17, 2018 · US
Catalyst system for olefin oligomerization reaction, and method for olefin oligomerization using the same
US-2018094085-A1 · Apr 5, 2018 · US
Catalyst composition and method of preparing polyolefin using the same
US-2018030166-A1 · Feb 1, 2018 · US
Preparation of aldehydes and ketones from alkenes using polyoxometalate catalysts and nitrogen oxides
US-9815757-B2 · Nov 14, 2017 · US
Process for the preparation of alkyl mercaptans
US-9809535-B2 · Nov 7, 2017 · US
Methods of preparing a catalyst
US-9796798-B2 · Oct 24, 2017 · US
Ligand compound, catalyst system for olefin oligomerization, and method for oligomerizing olefins using the same
US-2017260305-A1 · Sep 14, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01J31/34?
- CPC B01J31/34 is the Cooperative Patent Classification code for “of chromium, molybdenum or tungsten.”
- How many patents are filed under CPC B01J31/34 (of chromium, molybdenum or tungsten)?
- Our database includes 199 publications tagged with this CPC code.
- Is patent activity under CPC B01J31/34 growing?
- Publication counts under this code: 11 in 2024 vs 10 in 2025 (latest complete years).