B29C 48/694
Cylindrical or conical filters
B29C48/694 (Cylindrical or conical filters) appears on 87 US grants and 68 published applications in this corpus.
Search patents in B29C- Granted patents
- 87
- Published applications
- 68
- Assignees
- 74
- Inventors
- 173
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 4 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 3 | 0 |
| 1996 | 5 | 0 |
| 1997 | 3 | 0 |
| 1998 | 3 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 0 |
| 2002 | 1 | 2 |
| 2003 | 1 | 0 |
| 2004 | 1 | 4 |
| 2005 | 1 | 5 |
| 2006 | 2 | 2 |
| 2007 | 4 | 2 |
| 2008 | 1 | 1 |
| 2009 | 0 | 3 |
| 2010 | 2 | 3 |
| 2011 | 1 | 2 |
| 2012 | 2 | 2 |
| 2013 | 3 | 5 |
| 2014 | 1 | 1 |
| 2015 | 2 | 3 |
| 2016 | 1 | 2 |
| 2017 | 1 | 3 |
| 2018 | 0 | 5 |
| 2019 | 3 | 4 |
| 2020 | 5 | 3 |
| 2021 | 1 | 3 |
| 2022 | 4 | 2 |
| 2023 | 4 | 3 |
| 2024 | 1 | 4 |
| 2025 | 4 | 1 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Discharge technology for plastic filters26 May 2026US 12,636,823 B2Ettlinger Kunststoffmaschinen GmbH
- Filtering device for molten polymeric materials with counterflow cleaning system2 Sep 2025US 12,403,642 B2
- Plasticizing unit for a molding machine26 Aug 2025US 12,397,490 B2Engel Austria GmbH
- Method and device for recycling plastics25 Mar 2025US 12,257,741 B2BB Engineering GmbH
- Candle filter support and plate assembly for polymer melts4 Mar 2025US 12,239,925 B2Westlake Longview Corporation
- Filter assembly3 Sep 2026US 2026/0257414 A1Maag Germany GmbH
- Component for an extrusion line13 Aug 2026US 2026/0233451 A1Battenfeld-Cincinnati Germany GmbH
- Filter screen, tubular filter and filter device30 Jul 2026US 2026/0216624 A1Maag Ettlinger GmbH
- Method for operating a filter device and filter device14 Aug 2025US 2025/0256227 A1Maag Germany GmbH
- Filtering device for molten polymeric materials with counterflow cleaning system14 Nov 2024US 2024/0375338 A1Break Machinery Srl
Most cited
By later US patents
- Plastics recycling apparatus32US 4,453,905 A1984
- Polymer melt filtration apparatus32US 5,456,828 AZimmer, Inc. · 1995
- Method of making extended area filter29US 7,361,300 B2Mott Corporation · 2008
- Apparatus for filtering and extruding synthetic plastic scrap material26US 5,419,634 A1995
- Polymer filteration apparatus and method of use24US 6,270,703 B1Dynisco Extrusion, Inc. · 2001