B29C 48/51
With internal flow passages
Official title: with internal flow passages, e.g. for molten material
B29C48/51 (With internal flow passages) appears on 95 US grants and 73 published applications in this corpus.
Search patents in B29C- Granted patents
- 95
- Published applications
- 73
- Assignees
- 72
- Inventors
- 168
- Latest grant
- 31 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 1 | 0 |
| 1978 | 5 | 0 |
| 1979 | 3 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 5 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 4 | 0 |
| 1999 | 4 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 1 |
| 2003 | 2 | 3 |
| 2004 | 0 | 3 |
| 2005 | 1 | 2 |
| 2006 | 3 | 3 |
| 2007 | 1 | 1 |
| 2008 | 1 | 1 |
| 2009 | 1 | 1 |
| 2010 | 0 | 4 |
| 2011 | 0 | 2 |
| 2012 | 0 | 1 |
| 2013 | 3 | 2 |
| 2014 | 0 | 2 |
| 2015 | 2 | 4 |
| 2016 | 0 | 5 |
| 2017 | 3 | 8 |
| 2018 | 1 | 6 |
| 2019 | 1 | 2 |
| 2020 | 1 | 2 |
| 2021 | 3 | 4 |
| 2022 | 9 | 4 |
| 2023 | 6 | 4 |
| 2024 | 0 | 3 |
| 2025 | 3 | 2 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method and apparatus for the production of a rubber compound used for the manufacture of an article made from rubber or a pneumatic tire technical sector31 Mar 2026US 12,589,523 B2
- Production device for melt-blown non-woven fabric24 Feb 2026US 12,559,872 B2National University Corporation Kanazawa University
- Apparatus for dispensing a composition14 Oct 2025US 12,441,044 B23M Innovative Properties Company
- Kneading method for use with kneading apparatus with first and second extruders2 Sep 2025US 12,403,628 B2HSP Technologies Inc.
- Method for producing fiber-reinforced composite material24 Jun 2025US 12,337,505 B2National University Corporation Kanazawa University
- Apparatus and method for producing a cross-sectionally shaped aerosol-generating material extrudate2 Jul 2026US 2026/0182621 A1Philip Morris Products S. A.
- Temperature control device for a plasticizing screw and/or a plasticizing cylinder of a plasticizing unit11 Jun 2026US 2026/0158722 A1
- Material extrusion mechanism and molding machine16 Apr 2026US 2026/0102970 A1Seiko Epson Corporation
- Method for producing carbon fiber composite material20 Nov 2025US 2025/0353225 A1Shibaura Machine Co., Ltd.
- Extruder, Extruder Screw, and Method for Extruding31 Jul 2025US 2025/0242535 A1Irwin Research and Development, Inc.
Most cited
By later US patents
- Apparatus and method for producing and molding structural foam51US 5,098,267 AUnion Carbide Industrial Gases Technology Corporation · 1992
- Method for the extrusion of thermoplastic material composites40US 4,302,409 AUnion Carbide Corporation · 1981
- Method and molding screw for injection molding37US 4,802,140 AEastman Kodak Company · 1989
- Plastic extrusion and apparatus36US 4,118,163 AOwens-Illinois, Inc. · 1978
- Adjustable plug seal mechanism for heat transfer zone separation in hollow screws for extrusion machines28US 4,355,905 AThe Dow Chemical Company · 1982