B29C 2045/526
Abrasion resistant means in the screw head or non-return device
Official title: {Abrasion resistant means in the screw head or non-return device}
B29C2045/526 (Abrasion resistant means in the screw head or non-return device) appears on 6 US grants and 4 published applications in this corpus.
Search patents in B29C- Granted patents
- 6
- Published applications
- 4
- Assignees
- 5
- Inventors
- 17
- Latest grant
- 7 Aug 2007
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 2 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Check valve assembly for injection molding apparatus7 Aug 2007US 7,252,500 B2
- Plastifying unit in injection-moulding machines with a nonreturn valve29 Apr 2003US 6,554,603 B1Demag Ergotech GmbH
- Return flow shut-off device for an injection unit in an injection moulding machine5 Dec 2000US 6,155,816 AEngel Maschinenbau Gesellschaft m.b.H.
- Screw head device for injection molding machine31 Aug 1999US 5,945,141 ANissei Plastic Industrial Co., Ltd.
- Check valve assembly for injection molding apparatus1 Dec 1992US 5,167,971 A
- Plasticizing screw for a molding machine28 Oct 2021US 2021/0331364 A1Engel Austria GmbH
- Check valve assembly for injection molding apparatus29 Sep 2005US 2005/0214404 A1
- Check valve assembly for injection molding apparatus13 Nov 2003US 2003/0211198 A1
- Check valve assembly for injection molding apparatus13 Mar 2003US 2003/0049350 A1
Most cited
By later US patents
- Check valve assembly for injection molding apparatus17US 5,167,971 A1992
- Backflow-preventing valves for injection-molding machines13US 4,951,920 ANGK Insulators, Ltd. · 1990
- Plastifying unit in injection-moulding machines with a nonreturn valve6US 6,554,603 B1Demag Ergotech GmbH · 2003
- Screw head device for injection molding machine4US 5,945,141 ANissei Plastic Industrial Co., Ltd. · 1999
- Return flow shut-off device for an injection unit in an injection moulding machine3US 6,155,816 AEngel Maschinenbau Gesellschaft m.b.H. · 2000