C08F 4/64168
Tetra- or multi-dentate ligand
Official title: {Tetra- or multi-dentate ligand}
C08F4/64168 (Tetra- or multi-dentate ligand) appears on 88 US grants and 103 published applications in this corpus.
Search patents in C08F- Granted patents
- 88
- Published applications
- 103
- Assignees
- 14
- Inventors
- 218
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 1 | 0 |
| 2014 | 1 | 8 |
| 2015 | 9 | 10 |
| 2016 | 5 | 1 |
| 2017 | 4 | 5 |
| 2018 | 4 | 10 |
| 2019 | 6 | 4 |
| 2020 | 4 | 17 |
| 2021 | 13 | 11 |
| 2022 | 9 | 14 |
| 2023 | 9 | 11 |
| 2024 | 5 | 1 |
| 2025 | 13 | 5 |
| 2026 | 5 | 4 |
By publication year. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Propylene copolymers obtained using transition metal bis(phenolate) catalyst complexes and homogeneous process for production thereof29 Sep 2026US 12,747,311 B2ExxonMobil Technology and Engineering Company
- Catalyst systems and processes for producing polyethylene using the same21 Jul 2026US 12,686,731 B2Dow Global Technologies LLC
- Catalyst systems and processes for producing polyethylene using the same14 Jul 2026US 12,679,908 B2Dow Global Technologies LLC
- Polymerization of purge stream containing 1-octene6 Jan 2026US 12,516,138 B2Dow Global Technologies LLC
- Polyethylene compositions6 Jan 2026US 12,516,141 B2Dow Global Technologies LLC
- Process for producing branched polyolefin17 Sep 2026US 2026/0275006 A1Dow Global Technologies LLC
- Process for the production of olefinic block copolymers13 Aug 2026US 2026/0234316 A1Sabic Global Technologies B.V.
- Method of producing multimodal polyethylene using at least one group iii-based or lanthanide-based biphenylphenoxy catalyst12 Mar 2026US 2026/0071015 A1Dow Global Technologies LLC
- Multimodal polymerization processes with multi-catalyst systems12 Mar 2026US 2026/0071016 A1Dow Global Technologies LLC
- Multi stage process for producing ethylene-based polymer with (ultra) high molecular weight polyethylene component30 Oct 2025US 2025/0333547 A1Dow Global Technologies LLC
Most cited
By later US patents
- Process for selectively polymerizing ethylene and catalyst therefor37US 8,609,794 B2Dow Global Technologies LLC · 2013
- Polyolefin composition34US 9,102,819 B2Dow Global Technologies LLC · 2015
- Polyolefin composition30US 9,115,275 B2Dow Global Technologies LLC · 2015
- Methods of preparing a catalyst system23US 9,234,060 B2Univation Technologies, LLC · 2016
- Salenol catalyst18US 9,200,099 B2ExxonMobil Chemical Patents Inc. · 2015