B01J 2219/00254
Formation of unwanted polymer, such as "pop-corn"
B01J2219/00254 (Formation of unwanted polymer, such as "pop-corn") appears on 88 US grants and 95 published applications in this corpus.
Search patents in B01J- Granted patents
- 88
- Published applications
- 95
- Assignees
- 51
- Inventors
- 249
- Latest grant
- 11 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 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 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 0 |
| 2003 | 1 | 1 |
| 2004 | 0 | 4 |
| 2005 | 2 | 5 |
| 2006 | 4 | 8 |
| 2007 | 4 | 6 |
| 2008 | 2 | 2 |
| 2009 | 3 | 9 |
| 2010 | 7 | 10 |
| 2011 | 8 | 9 |
| 2012 | 5 | 5 |
| 2013 | 8 | 1 |
| 2014 | 7 | 8 |
| 2015 | 5 | 4 |
| 2016 | 4 | 3 |
| 2017 | 2 | 1 |
| 2018 | 2 | 6 |
| 2019 | 4 | 3 |
| 2020 | 5 | 2 |
| 2021 | 1 | 1 |
| 2022 | 1 | 2 |
| 2023 | 1 | 0 |
| 2024 | 0 | 3 |
| 2025 | 3 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for flushing reactor11 Nov 2025US 12,465,961 B2Linde Aktiengesellschaft
- Method for the preparation of polymer polyols25 Mar 2025US 12,258,436 B2Repsol, S. A.
- Easily polymerizable substance handling device25 Mar 2025US 12,259,082 B2Nippon Shokubai Co., Ltd.
- Apparatus for preparing oligomer21 Feb 2023US 11,583,825 B2LG Chem.Ltd.
- Method for manufacturing polymer and flow-type reaction system for manufacturing polymer17 May 2022US 11,332,551 B2FUJIFILM Corporation
- Device for the Detection of Incipient Sheeting in a Gas Phase Reactor19 Feb 2026US 2026/0048374 A1
- Handling device for easily polymerizable substance7 Aug 2025US 2025/0249423 A1Nippon Shokubai Co., Ltd.
- Method for the preparation of polymer polyols19 Dec 2024US 2024/0417507 A1Repsol, S. A.
- Method for flushing reactor21 Nov 2024US 2024/0383019 A1Linde Aktiengesellschaft
- Reactor for a gas-phase olefin polymerization7 Mar 2024US 2024/0075450 A1Basell Polyolefine GmbH
Most cited
By later US patents
- Gas phase fluidized bed polyolefin polymerization process using sound waves71US 5,461,123 AUnion Carbide Chemicals & Plastics Technology Corporation · 1995
- Filtration and flow distribution method for chemical reactors using reticulated ceramics with uniform pore distributions37US 6,291,603 B1Crystaphase International, Inc. · 2001
- Catalyst transfer pipe plug detection37US 9,968,899 B1Uop LLC · 2018
- Filtration and flow distribution method for chemical reactors33US 6,258,900 B1Crystaphase International, Inc. · 2001
- Process and apparatus for separating diluent from polymer solids28US 6,838,531 B2Chevron Phillips Chemical Company LP · 2005