C08F 4/78
Selected from chromium, molybdenum or tungsten
Official title: selected from chromium, molybdenum or tungsten
C08F4/78 (Selected from chromium, molybdenum or tungsten) appears on 77 US grants and 86 published applications in this corpus.
Search patents in C08F- Granted patents
- 77
- Published applications
- 86
- Assignees
- 26
- Inventors
- 129
- Latest grant
- 14 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 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 | 3 |
| 2014 | 1 | 3 |
| 2015 | 6 | 7 |
| 2016 | 7 | 5 |
| 2017 | 5 | 6 |
| 2018 | 2 | 5 |
| 2019 | 2 | 3 |
| 2020 | 7 | 10 |
| 2021 | 4 | 7 |
| 2022 | 12 | 9 |
| 2023 | 8 | 10 |
| 2024 | 11 | 9 |
| 2025 | 6 | 7 |
| 2026 | 4 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Systems and techniques for heat removal in gas phase polymerization14 Apr 2026US 12,600,803 B2Chevron Phillips Chemical Company LP
- Methods for making supported chromium catalysts with increased polymerization activity10 Mar 2026US 12,569,833 B2Chevron Phillips Chemical Company LP
- Aqueous methods for titanating a chromium/silica catalyst with an alkali metal10 Mar 2026US 12,570,770 B2Chevron Phillips Chemical Company LP
- Particle size control of silyl chromate catalysts and uses thereof in fluidized bed reactors3 Mar 2026US 12,565,545 B2Chevron Phillips Chemical Company LP
- High density polyethylene for rigid articles9 Sep 2025US 12,409,597 B2NOVA Chemicals (International) S.A.
- Aqueous methods for titanating a chromium/silica catalyst with an alkali metal21 May 2026US 2026/0139078 A1Chevron Phillips Chemical Company LP
- Constrained Geometry Metal-Ligand Complexes and Use Thereof in Olefin Polymerization4 Dec 2025US 2025/0368760 A1
- Aqueous methods for titanating a chromium/silica catalyst with an alkali metal13 Nov 2025US 2025/0346688 A1Chevron Phillips Chemical Company LP
- Methods for Making Supported Chromium Catalysts with Increased Polymerization Activity9 Oct 2025US 2025/0312772 A1Chevron Phillips Chemical Company LP
- Aqueous methods for titanating a chromium/silica catalyst with an alkali metal31 Jul 2025US 2025/0243298 A1Chevron Phillips Chemical Company LP
Most cited
By later US patents
- Methods of preparing a catalyst55US 10,287,369 B2Chevron Phillips Chemical Company LP · 2019
- Long chain branched polymers and methods of making same43US 9,023,967 B2Chevron Phillips Chemical Company LP · 2015
- Phosphinyl amidine compounds, metal complexes, catalyst systems, and their use to oligomerize or polymerize olefins42US 8,680,003 B2Chevron Phillips Chemical Company LP · 2014
- Long chain branched polymers and methods of making same32US 9,598,513 B2Chevron Phillips Chemical Company LP · 2017
- Long chain branched polymers and methods of making same25US 10,323,108 B2Chevron Phillips Chemical Company LP · 2019