C08F 4/69
Chromium, molybdenum, tungsten or compounds thereof
C08F4/69 (Chromium, molybdenum, tungsten or compounds thereof) appears on 71 US grants and 82 published applications in this corpus.
Search patents in C08F- Granted patents
- 71
- Published applications
- 82
- Assignees
- 27
- Inventors
- 159
- Latest grant
- 17 Jun 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2010 | 1 | 1 |
| 2011 | 1 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 2 |
| 2014 | 1 | 2 |
| 2015 | 3 | 7 |
| 2016 | 4 | 5 |
| 2017 | 2 | 6 |
| 2018 | 4 | 16 |
| 2019 | 14 | 8 |
| 2020 | 9 | 13 |
| 2021 | 9 | 7 |
| 2022 | 9 | 7 |
| 2023 | 7 | 3 |
| 2024 | 4 | 2 |
| 2025 | 3 | 2 |
By publication year.
Subgroups
Granted patents
Recent patents
- Chromium oxide catalyst for ethylene polymerization17 Jun 2025US 12,331,149 B2Sabic Global Technologies B.V.
- Methods for chromium catalyst activation using oxygen-enriched fluidization gas13 May 2025US 12,297,310 B2Chevron Phillips Chemical Company LP
- Supported three-center catalyst and preparation method and application18 Mar 2025US 12,252,575 B2South China Agricultural University
- Modified supported chromium catalysts and ethylene-based polymers produced therefrom13 Aug 2024US 12,059,672 B2Chevron Phillips Chemical Company LP
- Modified supported chromium catalysts and ethylene-based polymers produced therefrom30 Apr 2024US 11,969,718 B2Chevron Phillips Chemical Company LP
- Ligand Compound, Organic Chromium Compound, and Catalyst Composition Including the Same30 Oct 2025US 2025/0333427 A1LG Chem.Ltd.
- Method for removing polymer inside olefin oligomerization reactor25 Sep 2025US 2025/0297042 A1Hanwha Totalenergies Petrochemical Co., Ltd.
- Hdpe intermediate bulk container resin using advanced chrome catalyst by polyethylene gas phase technology26 Dec 2024US 2024/0425627 A1Univation Technologies, LLC
- Modified Supported Chromium Catalysts and Ethylene-Based Polymers Produced Therefrom6 Jun 2024US 2024/0181437 A1Chevron Phillips Chemical Company LP
- Modified Supported Chromium Catalysts and Ethylene-Based Polymers Produced Therefrom16 Nov 2023US 2023/0364595 A1Chevron Phillips Chemical Company LP
Most cited
By later US patents
- Tetramerization38US 7,829,749 B2NOVA Chemicals (International) S.A. · 2010
- Higher density polyolefins with improved stress crack resistance32US 9,156,970 B2Chevron Phillips Chemical Company LP · 2015
- Higher density polyolefins with improved stress crack resistance30US 9,394,393 B2Chevron Phillips Chemical Company LP · 2016
- Method for oligomerizing an olefin14US 10,471,416 B2LG Chem.Ltd. · 2019
- Polyolefin production with chromium-based catalysts13US 10,835,890 B2Univation Technologies, LLC · 2020