B01J 2231/122
Cationic polymerisation
Official title: Cationic (co)polymerisation, e.g. single-site or Ziegler-Natta type
B01J2231/122 (Cationic polymerisation) appears on 130 US grants and 131 published applications in this corpus.
Search patents in B01J- Granted patents
- 130
- Published applications
- 131
- Assignees
- 67
- Inventors
- 322
- Latest grant
- 3 Jun 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 6 | 2 |
| 2002 | 8 | 6 |
| 2003 | 4 | 5 |
| 2004 | 3 | 11 |
| 2005 | 5 | 15 |
| 2006 | 8 | 11 |
| 2007 | 10 | 9 |
| 2008 | 10 | 12 |
| 2009 | 4 | 3 |
| 2010 | 7 | 11 |
| 2011 | 15 | 9 |
| 2012 | 5 | 4 |
| 2013 | 8 | 3 |
| 2014 | 1 | 3 |
| 2015 | 2 | 1 |
| 2016 | 0 | 1 |
| 2017 | 2 | 2 |
| 2018 | 2 | 5 |
| 2019 | 3 | 5 |
| 2020 | 1 | 3 |
| 2021 | 5 | 4 |
| 2022 | 4 | 2 |
| 2023 | 1 | 1 |
| 2024 | 0 | 3 |
| 2025 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Method for preparing cocatalyst compound using anhydrous hydrocarbon solvent3 Jun 2025US 12,318,766 B2LG Chem.Ltd.
- Polymerization method and apparatus therefor8 Apr 2025US 12,269,024 B2Innospec Limited
- Polymerisation method and apparatus therefor14 Nov 2023US 11,813,602 B2Innospec Limited
- Process control for long chain branching control in polyethylene production4 Oct 2022US 11,459,413 B2Univation Technologies, LLC
- Dual metallocene catalyst copolymer compositions7 Jun 2022US 11,352,451 B2ExxonMobil Chemical Patents Inc.
- Perfluorinated amide salts and their uses as ionic conducting materials1 Aug 2024US 2024/0253023 A1
- Polymerisation method and apparatus therefor25 Jan 2024US 2024/0024833 A1Innospec Limited
- Method for the synthesis of tris(ortho-carboranyl)borane18 Jan 2024US 2024/0018167 A1Baylor University
- Olefin polymerization catalyst component having carbonate compounds23 Mar 2023US 2023/0092187 A1FormosaPlasticsCorporation,USA
- Method For Preparing Cocatalyst Compound Using Anhydrous Hydrocarbon Solvent3 Mar 2022US 2022/0062879 A1LG Chem.Ltd.
Most cited
By later US patents
- Perfluorinated amide salts and their uses as ionic conducting materials61US 6,319,428 B1Centre National De La Recherche Scientifique · 2001
- Methods of preparing a polymerization catalyst59US 7,700,516 B2Chevron Phillips Chemical Company LP · 2010
- Tridentate ligand42US 6,423,848 B1E. I. Du Pont de Nemours and Company · 2002
- Supported Lewis acid catalysts for hydrocarbon conversion reactions41US 5,789,335 AExxon Chemical Patents Inc. · 1998
- Haloaluminoxane compositions, their preparation, and their use in catalysis41US 7,355,058 B2Albemarle Corporation · 2008