B29C 45/1753
Cleaning or purging
Official title: {Cleaning or purging, e.g. of the injection unit (B29C45/24 takes precedence)}
B29C45/1753 (Cleaning or purging) appears on 112 US grants and 122 published applications in this corpus.
Search patents in B29C- Granted patents
- 112
- Published applications
- 122
- Assignees
- 99
- Inventors
- 271
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 5 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 5 | 0 |
| 2002 | 4 | 4 |
| 2003 | 4 | 9 |
| 2004 | 4 | 6 |
| 2005 | 2 | 2 |
| 2006 | 4 | 6 |
| 2007 | 0 | 4 |
| 2008 | 4 | 5 |
| 2009 | 2 | 4 |
| 2010 | 3 | 1 |
| 2011 | 5 | 5 |
| 2012 | 1 | 3 |
| 2013 | 1 | 4 |
| 2014 | 3 | 4 |
| 2015 | 3 | 4 |
| 2016 | 7 | 7 |
| 2017 | 6 | 7 |
| 2018 | 3 | 4 |
| 2019 | 2 | 3 |
| 2020 | 6 | 8 |
| 2021 | 3 | 2 |
| 2022 | 4 | 7 |
| 2023 | 4 | 4 |
| 2024 | 2 | 6 |
| 2025 | 3 | 9 |
| 2026 | 2 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Molding cycle stopping method, injection device, and injection molding machine25 Aug 2026US 12,715,164 B2The Japan Steel Works, Ltd.
- Maintenance method for discharge unit23 Jun 2026US 12,661,836 B2Seiko Epson Corporation
- Resin switching assist method and apparatus for molding machine12 Aug 2025US 12,384,084 B2Nissei Plastic Industrial Co., Ltd.
- Housing cleaning device for cleaning a housing of a screw machine29 Jul 2025US 12,370,582 B2Coperion GmbH
- Injection molding machine27 May 2025US 12,311,588 B2Shibaura Machine Co., Ltd.
- Cleaning of an injection molding tool16 Apr 2026US 2026/0102953 A1MHT Mold & Hotrunner Technology AG
- Injection molding system and method for cleaning fluid supply unit5 Mar 2026US 2026/0061679 A1King Steel Machinery Co., Ltd.
- Resin composition for cleaning molding machines5 Feb 2026US 2026/0035558 A1Asahi Kasei Kabushiki Kaisha
- Injection molding machine15 Jan 2026US 2026/0014746 A1Toyo Innovex Co., Ltd.
- Housing cleaning device for cleaning a housing of a screw machine23 Oct 2025US 2025/0326012 A1Coperion GmbH
Most cited
By later US patents
- Apparatus and method for purging injection molding system43US 6,514,440 B1Synventive Molding Solutions, Inc. · 2003
- Method for molding using venting pin41US 5,665,281 AMotorola, Inc. · 1997
- Apparatus for controlling injection molding machines32US 5,885,624 AToshiba Machine Co., Ltd. · 1999
- Molding apparatus and a method of using the same27US 5,605,707 AThermold Partners L.P. · 1997
- Vent apparatus for an injection mold24US 5,397,230 AGenCorp Inc. · 1995