B29C 48/53
Having a varying channel depth
Official title: having a varying channel depth, e.g. varying the diameter of the longitudinal screw trunk
B29C48/53 (Having a varying channel depth) appears on 234 US grants and 180 published applications in this corpus.
Search patents in B29C- Granted patents
- 234
- Published applications
- 180
- Assignees
- 168
- Inventors
- 470
- Latest grant
- 28 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 5 | 0 |
| 1978 | 8 | 0 |
| 1979 | 4 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 5 | 0 |
| 1983 | 1 | 0 |
| 1984 | 4 | 0 |
| 1985 | 4 | 0 |
| 1986 | 1 | 0 |
| 1987 | 4 | 0 |
| 1988 | 3 | 0 |
| 1989 | 5 | 0 |
| 1990 | 6 | 0 |
| 1991 | 5 | 0 |
| 1992 | 11 | 0 |
| 1993 | 9 | 0 |
| 1994 | 5 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 6 | 0 |
| 1998 | 3 | 0 |
| 1999 | 5 | 0 |
| 2000 | 5 | 0 |
| 2001 | 3 | 1 |
| 2002 | 3 | 5 |
| 2003 | 2 | 5 |
| 2004 | 3 | 6 |
| 2005 | 2 | 5 |
| 2006 | 2 | 7 |
| 2007 | 3 | 6 |
| 2008 | 4 | 9 |
| 2009 | 6 | 8 |
| 2010 | 7 | 17 |
| 2011 | 4 | 9 |
| 2012 | 10 | 14 |
| 2013 | 5 | 10 |
| 2014 | 8 | 13 |
| 2015 | 15 | 10 |
| 2016 | 6 | 6 |
| 2017 | 9 | 8 |
| 2018 | 2 | 6 |
| 2019 | 3 | 5 |
| 2020 | 4 | 10 |
| 2021 | 6 | 5 |
| 2022 | 9 | 6 |
| 2023 | 6 | 5 |
| 2024 | 0 | 2 |
| 2025 | 4 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- No solid bed extruder screw with varying width sub-channels28 Oct 2025US 12,454,089 B2
- Method for manufacturing cylindrical honeycomb fired body23 Sep 2025US 12,420,469 B2NGK Insulators, Ltd.
- Continuous dynamic and efficient devolatilization method for polymer/volatile system based on high mass transfer interfaces23 Sep 2025US 12,421,329 B1Useon Technology Limited
- Extruder having extruder screw with multiple degassing zones and diameters for the viscosity-increasing processing of meltable polymers6 May 2025US 12,290,975 B2Gneuss GmbH
- Manufacturing method and manufacturing device for foam molded article21 Nov 2023US 11,820,063 B2Maxell, Ltd.
- Vent stuffer for extruder and extrusion apparatus26 Mar 2026US 2026/0084360 A1The Japan Steel Works, Ltd.
- Systems and methods for recycling wet waste materials29 May 2025US 2025/0170760 A1Batech Corporation
- System and a method for extrusion of material15 Aug 2024US 2024/0269911 A1Wimao Oy
- Extruder18 Jan 2024US 2024/0017463 A1Sumitomo Heavy Industries Modern, Ltd.
- No solid bed extruder screw with varying width sub-channels23 Nov 2023US 2023/0373150 A1
Most cited
By later US patents
- Method and apparatus for extruding bingham plastic-type materials134US 5,304,331 AMinnesota Mining and Manufacturing Company · 1994
- Viscosity pump for extrusion-based deposition systems65US 7,891,964 B2Stratasys, Inc. · 2011
- Apparatus and method for making foamed resin products47US 4,393,017 AThe B. F. Goodrich Company · 1983
- Satellite extruder arrangement and method for the addition of an additive in a polymer melt within a dynamic mixer46US 5,951,159 A1999
- Extrusion apparatus and method45US 4,173,417 AHPM Corporation · 1979