B29C 48/27
Cleaning
Official title: Cleaning; Purging; Avoiding contamination
B29C48/27 (Cleaning) appears on 339 US grants and 293 published applications in this corpus.
Search patents in B29C- Granted patents
- 339
- Published applications
- 293
- Assignees
- 230
- Inventors
- 750
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 4 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 5 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 8 | 0 |
| 1985 | 1 | 0 |
| 1986 | 4 | 0 |
| 1987 | 2 | 0 |
| 1988 | 4 | 0 |
| 1989 | 6 | 0 |
| 1990 | 6 | 0 |
| 1991 | 5 | 0 |
| 1992 | 11 | 0 |
| 1993 | 3 | 0 |
| 1994 | 6 | 0 |
| 1995 | 11 | 0 |
| 1996 | 6 | 0 |
| 1997 | 4 | 0 |
| 1998 | 9 | 0 |
| 1999 | 13 | 0 |
| 2000 | 8 | 0 |
| 2001 | 13 | 3 |
| 2002 | 7 | 6 |
| 2003 | 7 | 4 |
| 2004 | 4 | 8 |
| 2005 | 3 | 10 |
| 2006 | 7 | 7 |
| 2007 | 2 | 5 |
| 2008 | 3 | 12 |
| 2009 | 5 | 3 |
| 2010 | 8 | 7 |
| 2011 | 5 | 19 |
| 2012 | 3 | 9 |
| 2013 | 6 | 13 |
| 2014 | 10 | 16 |
| 2015 | 10 | 15 |
| 2016 | 8 | 16 |
| 2017 | 15 | 15 |
| 2018 | 9 | 20 |
| 2019 | 13 | 12 |
| 2020 | 13 | 9 |
| 2021 | 9 | 10 |
| 2022 | 17 | 13 |
| 2023 | 8 | 15 |
| 2024 | 11 | 16 |
| 2025 | 11 | 20 |
| 2026 | 6 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- High temperature extruder for a 3D printer22 Sep 2026US 12,741,416 B23Rdaxis Pty Ltd
- Extrusion facility with underground transfer of the tool module14 Jul 2026US 12,679,016 B2Compagnie Generale Des Etablissements Michelin
- Extruder comprising a particular arrangement of asymmetrical screw elements on screw shafts2 Jun 2026US 12,643,276 B2Covestro Deutschland AG
- Discharge technology for plastic filters26 May 2026US 12,636,823 B2Ettlinger Kunststoffmaschinen GmbH
- Drainage plates for ceramic extrusion31 Mar 2026US 12,589,521 B2Corning Incorporated
- Screw elements with improved mixing effect and improved heat transfer, and the use of same24 Sep 2026US 2026/0284952 A1Covestro Deutschland AG
- Filter assembly3 Sep 2026US 2026/0257414 A1Maag Germany GmbH
- Extrusion plant for blow extrusion of plastic films with a system for removing vapours generated by the extrusion process23 Jul 2026US 2026/0208422 A1Syncro S.R.L.
- Methods for preparing a polyster film and compositions thereof11 Jun 2026US 2026/0158727 A1Far Eastern New Century Corporation
- Filtering Apparatus28 May 2026US 2026/0145105 A1Maag Germany GmbH
Most cited
By later US patents
- Bimodal molecular weight distribution polyolefins125US 5,539,076 AMobil Oil Corporation · 1996
- Viscosity pump for extrusion-based deposition systems65US 7,891,964 B2Stratasys, Inc. · 2011
- Degassing of flowable masses in a multiple-screw extruder47US 7,654,725 B2Buhler AG · 2010
- Additive-containing synthetic filaments, and yarns and carpets including such filaments45US 5,834,089 ABASF SE · 1998
- Plastic net composed of co-extruded composite strands42US 4,656,075 ALeucadia, Inc. · 1987