B29C 45/23
Feed stopping equipment
B29C45/23 (Feed stopping equipment) appears on 171 US grants and 160 published applications in this corpus.
Search patents in B29C- Granted patents
- 171
- Published applications
- 160
- Assignees
- 110
- Inventors
- 335
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 0 | 0 |
| 1978 | 8 | 0 |
| 1979 | 3 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 4 | 0 |
| 1990 | 3 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 9 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 0 |
| 2003 | 2 | 0 |
| 2004 | 1 | 2 |
| 2005 | 0 | 2 |
| 2006 | 1 | 7 |
| 2007 | 4 | 1 |
| 2008 | 4 | 1 |
| 2009 | 1 | 6 |
| 2010 | 3 | 1 |
| 2011 | 0 | 0 |
| 2012 | 3 | 1 |
| 2013 | 0 | 8 |
| 2014 | 1 | 7 |
| 2015 | 8 | 8 |
| 2016 | 6 | 14 |
| 2017 | 8 | 9 |
| 2018 | 8 | 16 |
| 2019 | 3 | 7 |
| 2020 | 11 | 6 |
| 2021 | 3 | 7 |
| 2022 | 6 | 10 |
| 2023 | 3 | 11 |
| 2024 | 9 | 11 |
| 2025 | 12 | 14 |
| 2026 | 6 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B29C 45/231Needle valve systems therefor90
- B29C 45/234Valves opened by the pressure of the moulding material11
- B29C 45/232Comprising closing means disposed outside the nozzle9
- B29C 2045/235Axially movable inclined or orthogonal valvesIndexing code6
- B29C 2045/237Two or more cooperating valve elementsIndexing code5
- B29C 2045/238Injection nozzles extending into the sprue channel or vice versaIndexing code3
Recent patents
- Guillotine obturation valve for injection molding4 Aug 2026US 12,697,759 B2INGLASS S.p.A.
- Extrusion device30 Jun 2026US 12,668,005 B2Aisapack Holding S.A.
- Adjustment method for shut-off nozzle, shut-off nozzle, injection device, and injection molding machine30 Jun 2026US 12,668,008 B2The Japan Steel Works, Ltd.
- Shut-off nozzle of vertical injection molding machine, injection device, and vertical injection molding machine16 Jun 2026US 12,654,372 B2The Japan Steel Works, Ltd.
- Foam molding method, control method for injection molding machine for foam molding, and injection molding machine for foam molding17 Mar 2026US 12,576,566 B2Shibaura Machine Co., Ltd.
- An injection molding machine27 Aug 2026US 2026/0249532 A1Lego A/S
- Shut-off nozzle for injection molding23 Jul 2026US 2026/0208415 A1Moxietec, LLC
- Foam molding method, control method for injection molding machine for foam molding, and injection molding machine for foam molding2 Jul 2026US 2026/0183994 A1Shibaura Machine Co., Ltd.
- System and method for monitoring the closing position of a shutter pin2 Jul 2026US 2026/0183999 A1INGLASS S.p.A.
- Injection molding device and injection unit25 Jun 2026US 2026/0175489 A1Seiko Epson Corporation
Most cited
By later US patents
- Apparatus for injection molding synthetic resin materials87US 4,106,887 AAsahi-Dow Limited · 1978
- Nozzle shut-off valve for an injection molding machine68US 5,035,605 ACincinnati Milacron Inc. · 1991
- Apparatus for the injection molding of thermoplastics60US 4,781,554 A1988
- Injection nozzle having guides for nozzle rod56US 3,952,927 AThe Standard Oil Company · 1976
- Plastic injection molding nozzle with gas assist35US 5,151,278 ANitrojection Corporation · 1992