C07F 5/068
Preparation of alumoxanes
Official title: {preparation of alum(in)oxanes}
C07F5/068 (Preparation of alumoxanes) appears on 111 US grants and 38 published applications in this corpus.
Search patents in C07F- Granted patents
- 111
- Published applications
- 38
- Assignees
- 50
- Inventors
- 185
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 0 | 0 |
| 1990 | 7 | 0 |
| 1991 | 9 | 0 |
| 1992 | 8 | 0 |
| 1993 | 3 | 0 |
| 1994 | 4 | 0 |
| 1995 | 12 | 0 |
| 1996 | 4 | 0 |
| 1997 | 7 | 0 |
| 1998 | 8 | 0 |
| 1999 | 7 | 0 |
| 2000 | 5 | 0 |
| 2001 | 4 | 0 |
| 2002 | 0 | 1 |
| 2003 | 3 | 3 |
| 2004 | 2 | 2 |
| 2005 | 2 | 1 |
| 2006 | 1 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 1 | 1 |
| 2013 | 0 | 5 |
| 2014 | 0 | 0 |
| 2015 | 2 | 2 |
| 2016 | 4 | 2 |
| 2017 | 2 | 5 |
| 2018 | 2 | 1 |
| 2019 | 2 | 7 |
| 2020 | 3 | 0 |
| 2021 | 1 | 0 |
| 2022 | 1 | 0 |
| 2023 | 0 | 3 |
| 2024 | 0 | 4 |
| 2025 | 0 | 0 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Toluene free preparation of SMAO: heating with TMA to improve activity26 May 2026US 12,637,484 B2ExxonMobil Chemical Patents Inc.
- Process for the preparation of polymerized polyethylene wax1 Nov 2022US 11,485,806 B2SCG Chemicals Co., Ltd.
- Toluene free silica supported single-site metallocene catalysts from in-situ supported alumoxane formation in aliphatic solvents1 Jun 2021US 11,021,552 B2ExxonMobil Chemical Patents Inc.
- Process to prepare aluminoxanes3 Nov 2020US 10,822,356 B2Nouryon Chemicals International B. V.
- Solid PMAO composition and method for producing same6 Oct 2020US 10,793,652 B2Tosoh Finechem Corporation
- A highly efficient process for the recovery and conversion of methylaluminoxane residues24 Sep 2026US 2026/0285883 A1LANXESS Organometallics GmbH
- Alkylaluminoxane compositions prepared from trimethylaluminum and triethylaluminum and uses thereof in ethylene oligomerization processes31 Oct 2024US 2024/0360160 A1Chevron Phillips Chemical Company LP
- Single-ion conducting network22 Aug 2024US 2024/0279250 A1Sumitomo Chemical Company, Limited
- Improved Process to Prepare Catalyst from In-Situ Formed Alumoxane18 Jan 2024US 2024/0018278 A1
- Toluene Free Supported Methylalumoxane Precursor11 Jan 2024US 2024/0010660 A1
Most cited
By later US patents
- Modified methylaluminoxane178US 5,041,584 ATexas Alkyls, Inc. · 1991
- Process for the preparation of alumoxanes139US 4,665,208 AExxon Chemical Patents Inc. · 1987
- Finely divided aluminoxane, process for producing same and its use134US 4,952,540 AMitsui Petrochemical Industries, Ltd. · 1990
- Aluminoxane process133US 4,908,463 AEthyl Corporation · 1990
- Process for the preparation of oligomeric aluminoxanes122US 4,544,762 AHoechst Aktiengesellschaft · 1985