C08F 2/002
Scale prevention in a polymerisation reactor or its auxiliary parts
Official title: {Scale prevention in a polymerisation reactor or its auxiliary parts}
C08F2/002 (Scale prevention in a polymerisation reactor or its auxiliary parts) appears on 317 US grants and 104 published applications in this corpus.
Search patents in C08F- Granted patents
- 317
- Published applications
- 104
- Assignees
- 117
- Inventors
- 569
- Latest grant
- 14 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 8 | 0 |
| 1978 | 17 | 0 |
| 1979 | 6 | 0 |
| 1980 | 9 | 0 |
| 1981 | 12 | 0 |
| 1982 | 4 | 0 |
| 1983 | 5 | 0 |
| 1984 | 7 | 0 |
| 1985 | 8 | 0 |
| 1986 | 9 | 0 |
| 1987 | 6 | 0 |
| 1988 | 5 | 0 |
| 1989 | 5 | 0 |
| 1990 | 10 | 0 |
| 1991 | 6 | 0 |
| 1992 | 9 | 0 |
| 1993 | 15 | 0 |
| 1994 | 12 | 0 |
| 1995 | 25 | 0 |
| 1996 | 7 | 0 |
| 1997 | 8 | 0 |
| 1998 | 8 | 0 |
| 1999 | 6 | 0 |
| 2000 | 8 | 0 |
| 2001 | 8 | 0 |
| 2002 | 3 | 2 |
| 2003 | 3 | 0 |
| 2004 | 2 | 3 |
| 2005 | 3 | 3 |
| 2006 | 1 | 1 |
| 2007 | 0 | 2 |
| 2008 | 3 | 0 |
| 2009 | 0 | 4 |
| 2010 | 2 | 3 |
| 2011 | 2 | 5 |
| 2012 | 4 | 4 |
| 2013 | 1 | 4 |
| 2014 | 4 | 7 |
| 2015 | 4 | 8 |
| 2016 | 8 | 15 |
| 2017 | 8 | 7 |
| 2018 | 12 | 4 |
| 2019 | 1 | 1 |
| 2020 | 6 | 3 |
| 2021 | 3 | 8 |
| 2022 | 4 | 4 |
| 2023 | 5 | 8 |
| 2024 | 2 | 2 |
| 2025 | 5 | 3 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Screening assembly and process for screening polymer from an effluent stream at reduced levels of polymer entrainment14 Apr 2026US 12,599,883 B2Borealis AG
- Process for preparing aqueous polymer dispersions in a tubular reactor3 Mar 2026US 12,565,553 B2Wacker Chemie AG
- Antifoulant and process9 Dec 2025US 12,492,274 B2Dow Global Technologies LLC
- Loop slurry periodogram control to prevent reactor fouling and reactor shutdowns11 Nov 2025US 12,466,900 B2Chevron Phillips Chemical Company LP
- Testing H2S scavengers polymerization factors9 Sep 2025US 12,411,091 B2ConocoPhillips Company
- Use of radical scavengers to reduce fouling during high pressure polymerization16 Apr 2026US 2026/0103551 A1Dow Global Technologies LLC
- Decreasing triboelectric charging of, and/or reactor fouling by, polyolefin particles9 Apr 2026US 2026/0097377 A1Univation Technologies, LLC
- Loop slurry periodogram control to prevent reactor fouling and reactor shutdowns12 Feb 2026US 2026/0042872 A1Chevron Phillips Chemical Company LP
- Continuous olefin polymerization process in the presence of an antistatic agent11 Dec 2025US 2025/0376547 A1Basell Polyolefine GmbH
- Method of Suppressing Plugging in Manufacturing Process of Ethylene-Acrylic Acid Copolymer20 Feb 2025US 2025/0059303 A1SK Geo Centric Co., Ltd.
Most cited
By later US patents
- Method for continuous production of cross-linked polymer157US 4,625,001 ANippon Shokubai Kagaku Kogyo Co., Ltd. · 1986
- Heat exchanger antifoulant84US 4,551,226 AChevron Research Company · 1985
- Method for production of absorbent polymer54US 5,124,416 ANippon Shokubai Kagaku Kogyo Co., Ltd. · 1992
- Internally coated reaction vessel for use in olefinic polymerization42US 4,024,301 AThe B. F. Goodrich Company · 1977
- Olefin oligomerization reaction processes exhibiting reduced fouling38US 8,227,653 B2ExxonMobil Chemical Patents Inc. · 2012