B01J 2231/10
Polymerisation reactions involving at least dual use catalysts
Official title: Polymerisation reactions involving at least dual use catalysts, e.g. for both oligomerisation and polymerisation
B01J2231/10 (Polymerisation reactions involving at least dual use catalysts) appears on 642 US grants and 576 published applications in this corpus.
Search patents in B01J- Granted patents
- 642
- Published applications
- 576
- Assignees
- 309
- Inventors
- 1,550
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 7 | 0 |
| 1978 | 6 | 0 |
| 1979 | 8 | 0 |
| 1980 | 6 | 0 |
| 1981 | 5 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 4 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 3 | 0 |
| 1988 | 4 | 0 |
| 1989 | 9 | 0 |
| 1990 | 4 | 0 |
| 1991 | 11 | 0 |
| 1992 | 4 | 0 |
| 1993 | 3 | 0 |
| 1994 | 0 | 0 |
| 1995 | 3 | 0 |
| 1996 | 6 | 0 |
| 1997 | 10 | 0 |
| 1998 | 18 | 0 |
| 1999 | 15 | 0 |
| 2000 | 23 | 0 |
| 2001 | 29 | 6 |
| 2002 | 19 | 20 |
| 2003 | 28 | 31 |
| 2004 | 22 | 34 |
| 2005 | 21 | 47 |
| 2006 | 22 | 28 |
| 2007 | 33 | 29 |
| 2008 | 19 | 30 |
| 2009 | 10 | 18 |
| 2010 | 25 | 26 |
| 2011 | 23 | 18 |
| 2012 | 17 | 15 |
| 2013 | 12 | 18 |
| 2014 | 12 | 21 |
| 2015 | 17 | 30 |
| 2016 | 23 | 21 |
| 2017 | 20 | 16 |
| 2018 | 18 | 30 |
| 2019 | 15 | 40 |
| 2020 | 19 | 20 |
| 2021 | 28 | 16 |
| 2022 | 13 | 9 |
| 2023 | 13 | 14 |
| 2024 | 7 | 10 |
| 2025 | 7 | 13 |
| 2026 | 6 | 16 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Cobalt catalysts containing “smart” or “task specific” anions1 Sep 2026US 12,722,146 B2The Texas A&M University System
- Method for preparing polyether amine catalyst, and polyether amine14 Jul 2026US 12,679,931 B2Shangyu Huangma Surface Activated Reagent Research Institute Co., Ltd.
- Process for the preparation of a multimodal polyethylene7 Apr 2026US 12,595,325 B2Borealis AG
- Non-metal catalyst for synthesizing polycarbonate by CO2 and preparation method therefor31 Mar 2026US 12,589,384 B2Wuhan Institute of Technology
- Metallocene complexes and catalysts made therefrom24 Mar 2026US 12,583,955 B2Borealis AG
- Ziegler-natta catalyst for ethylene polymerization and method for preparing same24 Sep 2026US 2026/0286017 A1Hanwha Solutions Corporation
- Solid titanium catalyst component, catalyst for polymerizing olefin, and method for polymerizing olefin24 Sep 2026US 2026/0286018 A1Mitsui Chemicals, Inc.
- Asymmetrical hafnium metallocenes10 Sep 2026US 2026/0265283 A1Dow Global Technologies LLC
- Symmetrical hafnium metallocene for making polymers with broad-orthogonal composition distributions10 Sep 2026US 2026/0265284 A1Dow Global Technologies LLC
- Symmetrical zirconium metallocenes having isobutyl cyclopentadienyl ligands27 Aug 2026US 2026/0250309 A1Dow Global Technologies LLC
Most cited
By later US patents
- High metathesis activity ruthenium and osmium metal carbene complexes146US 5,831,108 ACalifornia Institute of Technology · 1998
- Metallocenes containing aryl-substituted indenyl derivatives as ligands, process for their preparation, and their use as catalysts137US 5,770,753 ATargor GmbH · 1998
- Metallocenes containing aryl-substituted indenyl derivatives as ligands, process for their preparation, and their use as catalysts123US 5,840,644 ATargor GmbH · 1998
- Olefin metathesis coupling using ruthenium and osmium carbene complexes113US 5,750,815 ACalifornia Institute of Technology · 1998
- Vinly-substituted bridged metallocenes111US 5,565,592 APhillips Petroleum Company · 1996