C08F 4/64141
Dianionic ligand
Official title: {Dianionic ligand}
C08F4/64141 (Dianionic ligand) appears on 50 US grants and 61 published applications in this corpus.
Search patents in C08F- Granted patents
- 50
- Published applications
- 61
- Assignees
- 17
- Inventors
- 125
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2002 | 0 | 1 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 1 |
| 2014 | 1 | 2 |
| 2015 | 2 | 4 |
| 2016 | 5 | 3 |
| 2017 | 4 | 2 |
| 2018 | 2 | 6 |
| 2019 | 1 | 5 |
| 2020 | 5 | 8 |
| 2021 | 9 | 9 |
| 2022 | 5 | 5 |
| 2023 | 6 | 6 |
| 2024 | 3 | 1 |
| 2025 | 2 | 7 |
| 2026 | 4 | 0 |
By publication year. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Thermoplastic resin composition6 Oct 2026US 12,753,300 B2LG Chem.Ltd.
- 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
- Organozinc compound preparation method, chain transfer agent, block copolymer, and resin composition12 May 2026US 12,624,054 B2LG Chem.Ltd.
- Bis(heterocyclic-olate) Lewis base catalysts and methods thereof28 Apr 2026US 12,612,474 B2ExxonMobil Chemical Patents Inc.
- Polyethylene and polypropylene block copolymers11 Mar 2025US 12,247,092 B2Cornell University
- Bis(heterocyclic-olate) Lewis Base Catalysts and Methods Thereof20 Nov 2025US 2025/0353939 A1ExxonMobil Chemical Patents Inc.
- Modified Pyridine-2,6-Bis(Phenylenephenolate) Complexes with Enhanced Solubility that are Useful as Catalyst Components for Olefin Polymerization20 Nov 2025US 2025/0353942 A1ExxonMobil Chemical Patents Inc.
- Substituted Pyridine-2,6-bis(phenylenephenolate) Complexes with Enhanced Solubility that are Useful as Catalyst Components for Olefin Polymerization4 Sep 2025US 2025/0277065 A1
- Substituted Pyridine-2,6-Bis(Phenylenephenolate) Complexes with Enhanced Solubility that are Useful as Catalyst Components for Olefin Polymerization4 Sep 2025US 2025/0277066 A1
- Polyolefin compositions featuring in situ blending of an oil extension27 Mar 2025US 2025/0101156 A1ExxonMobil Technology and Engineering Company
Most cited
By later US patents
- Catalyst systems and methods of making and using same24US 8,932,975 B2Chevron Phillips Chemical Company LP · 2015
- Methods of preparing a catalyst system23US 9,234,060 B2Univation Technologies, LLC · 2016
- Reversible chain-transfer in polyolefin polymerization with pyridyldiamide catalysts14US 9,249,238 B2ExxonMobil Chemical Patents Inc. · 2016
- Process to produce polymers from pyridyldiamido transition metal complexes and use thereof14US 9,260,552 B2ExxonMobil Chemical Patents Inc. · 2016
- Catalyst systems comprising pyridyldiamido transition metal complexes and chain transfer agent and use thereof14US 9,315,593 B2ExxonMobil Chemical Patents Inc. · 2016