B29C 48/66
Barrier threads, i.e. comprising primary and secondary threads whereby the secondary thread
Official title: Barrier threads, i.e. comprising primary and secondary threads whereby the secondary thread provides clearance to the barrel for material movement
B29C48/66 (Barrier threads, i.e. comprising primary and secondary threads whereby the secondary thread) appears on 23 US grants and 19 published applications in this corpus.
Search patents in B29C- Granted patents
- 23
- Published applications
- 19
- Assignees
- 21
- Inventors
- 68
- Latest grant
- 2 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 3 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 4 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 1 |
| 2014 | 1 | 0 |
| 2015 | 1 | 2 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 0 | 1 |
| 2021 | 1 | 0 |
| 2022 | 0 | 1 |
| 2023 | 0 | 4 |
| 2024 | 0 | 4 |
| 2025 | 3 | 2 |
By publication year. Applications have been published since 2001.
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Most cited
By later US patents
- Screw extruder with improved dispersive mixing elements38US 6,136,246 ARauwendaal Extrusion Engineering, Inc. · 2000
- Method of processing scrap roof-membrane sheet material comprising a flexible synthetic fabric substrate enveloped in a thermoplastic plastic envelope35US 5,145,617 ADuro-Last, Inc. · 1992
- High efficiency extruder33US 6,062,719 AThe Dow Chemical Company · 2000
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- Screw extruder with improved dispersive mixing25US 5,932,159 ARauwendaal Extrusion Engineering, Inc. · 1999