B29C 48/535
With thread pitch varying along the longitudinal axis
Official title: with thread pitch varying along the longitudinal axis
B29C48/535 (With thread pitch varying along the longitudinal axis) appears on 187 US grants and 145 published applications in this corpus.
Search patents in B29C- Granted patents
- 187
- Published applications
- 145
- Assignees
- 138
- Inventors
- 435
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 4 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 3 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 4 | 0 |
| 1990 | 7 | 0 |
| 1991 | 0 | 0 |
| 1992 | 9 | 0 |
| 1993 | 7 | 0 |
| 1994 | 5 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 6 | 0 |
| 1998 | 6 | 0 |
| 1999 | 4 | 0 |
| 2000 | 4 | 0 |
| 2001 | 8 | 3 |
| 2002 | 6 | 11 |
| 2003 | 6 | 6 |
| 2004 | 5 | 4 |
| 2005 | 4 | 8 |
| 2006 | 5 | 7 |
| 2007 | 2 | 6 |
| 2008 | 2 | 7 |
| 2009 | 6 | 3 |
| 2010 | 5 | 4 |
| 2011 | 2 | 7 |
| 2012 | 3 | 10 |
| 2013 | 1 | 5 |
| 2014 | 6 | 7 |
| 2015 | 7 | 7 |
| 2016 | 7 | 7 |
| 2017 | 4 | 9 |
| 2018 | 5 | 2 |
| 2019 | 3 | 5 |
| 2020 | 5 | 5 |
| 2021 | 3 | 4 |
| 2022 | 6 | 5 |
| 2023 | 3 | 2 |
| 2024 | 2 | 5 |
| 2025 | 3 | 4 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Intermittent extrusion system and extrusion device19 May 2026US 12,629,877 B2Wuyi University
- No solid bed extruder screw with varying width sub-channels28 Oct 2025US 12,454,089 B2
- 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 screw elements with a particularly large pitch in the region of the gas venting opening, and use of said extruder15 Jul 2025US 12,358,202 B2Covestro Intellectual Property GmbH & Co.KG
- System and method for continuously manufacturing cured membranes24 Dec 2024US 12,172,358 B2Holcim Technology Ltd
- Miniaturized volumetric extruder using twin conical screws, each provided with a thread, the pitch of which increases to maintain a constant displacement23 Jul 2026US 2026/0208423 A1Compagnie Generale Des Etablissements Michelin
- Vent stuffer for extruder and extrusion apparatus26 Mar 2026US 2026/0084360 A1The Japan Steel Works, Ltd.
- Intermittent extrusion system and extrusion device2 Oct 2025US 2025/0303626 A1Wuyi University
- Screw elements with improved mixing effect and pressure build-up19 Jun 2025US 2025/0196077 A1Covestro Deutschland AG
- Systems and methods for recycling wet waste materials29 May 2025US 2025/0170760 A1Batech Corporation
Most cited
By later US patents
- Thermoplastic closed loop recycling process99US 5,424,013 A1995
- Continuous mixing of elastomeric compounds66US 5,158,725 AThe Goodyear Tire & Rubber Company · 1992
- Process and apparatus for producing starch melt and products obtainable by this process58US 5,316,578 AEMS-Inventa AG · 1994
- Homogenizing and/or dispersing device comprising endless screws56US 7,025,491 B23+Extruder GmbH · 2006
- Reconstituted polymeric materials derived from post-consumer waste, industrial scrap and virgin resins made by solid state pulverization52US 5,814,673 ANorthwestern University · 1998