B29B 7/425
With screw surrounded by a casing provided with grooves or cavities
Official title: {with screw surrounded by a casing provided with grooves or cavities}
B29B7/425 (With screw surrounded by a casing provided with grooves or cavities) appears on 14 US grants and 12 published applications in this corpus.
Search patents in B29B- Granted patents
- 14
- Published applications
- 12
- Assignees
- 15
- Inventors
- 30
- Latest grant
- 9 Jul 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 2 |
| 2016 | 2 | 0 |
| 2017 | 0 | 2 |
| 2018 | 0 | 1 |
| 2019 | 3 | 2 |
| 2020 | 0 | 1 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 1 | 0 |
| 2024 | 1 | 1 |
| 2025 | 0 | 0 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Method of carrying out thermolysis and thermolysis apparatus24 Dec 2020US 2020/0398475 A1Teknologian tutkimuskeskus VTT Oy
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Most cited
By later US patents
- Mixing apparatus36US 4,184,772 AFrenkel C-D Aktiengesellschaft · 1980
- Transfer mixer assembly for use with an extruder screw of a polymer extruder or the like33US 4,779,989 A1988
- Mixing apparatus25US 4,136,969 AFrenkel C-D Aktiengesellschaft · 1979
- Homogenizer for viscous materials20US 4,124,307 AFried. Krupp Gesellschaft mit beschrankter Haftung · 1978
- Screw extruders18US 4,462,692 AFrenkel C-D Aktiengesellschaft · 1984