B29C 45/28
Closure devices therefor
B29C45/28 (Closure devices therefor) appears on 811 US grants and 701 published applications in this corpus.
Search patents in B29C- Granted patents
- 811
- Published applications
- 701
- Assignees
- 278
- Inventors
- 860
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 7 | 0 |
| 1978 | 8 | 0 |
| 1979 | 2 | 0 |
| 1980 | 6 | 0 |
| 1981 | 9 | 0 |
| 1982 | 5 | 0 |
| 1983 | 11 | 0 |
| 1984 | 6 | 0 |
| 1985 | 7 | 0 |
| 1986 | 2 | 0 |
| 1987 | 9 | 0 |
| 1988 | 10 | 0 |
| 1989 | 6 | 0 |
| 1990 | 13 | 0 |
| 1991 | 14 | 0 |
| 1992 | 14 | 0 |
| 1993 | 9 | 0 |
| 1994 | 12 | 0 |
| 1995 | 10 | 0 |
| 1996 | 9 | 0 |
| 1997 | 6 | 0 |
| 1998 | 16 | 0 |
| 1999 | 17 | 0 |
| 2000 | 17 | 0 |
| 2001 | 23 | 2 |
| 2002 | 21 | 21 |
| 2003 | 17 | 23 |
| 2004 | 23 | 41 |
| 2005 | 7 | 20 |
| 2006 | 21 | 40 |
| 2007 | 32 | 28 |
| 2008 | 33 | 30 |
| 2009 | 18 | 34 |
| 2010 | 28 | 30 |
| 2011 | 26 | 17 |
| 2012 | 22 | 28 |
| 2013 | 18 | 30 |
| 2014 | 11 | 32 |
| 2015 | 21 | 27 |
| 2016 | 27 | 39 |
| 2017 | 17 | 35 |
| 2018 | 31 | 47 |
| 2019 | 27 | 30 |
| 2020 | 31 | 20 |
| 2021 | 30 | 33 |
| 2022 | 25 | 33 |
| 2023 | 27 | 27 |
| 2024 | 17 | 19 |
| 2025 | 22 | 10 |
| 2026 | 7 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Injection mold and injection molding method18 Aug 2026US 12,709,048 B2Huawei Technologies Co., Ltd.
- Guillotine obturation valve for injection molding4 Aug 2026US 12,697,759 B2INGLASS S.p.A.
- Injection molding machine for foam molding and method for controlling injection molding machine14 Jul 2026US 12,679,015 B2The Japan Steel Works, Ltd.
- Heating assembly and method for insulation system restoration of a power cable19 May 2026US 12,633,433 B2NKT HV Cables AB
- Injector body for injection molding10 Mar 2026US 12,570,030 B2INGLASS S.p.A.
- System and method for monitoring the closing position of a shutter pin2 Jul 2026US 2026/0183999 A1INGLASS S.p.A.
- Guillotine obturation valve for injection molding11 Jun 2026US 2026/0158717 A1INGLASS S.p.A.
- Injection molding system and injection molding method9 Apr 2026US 2026/0097545 A1King Steel Machinery Co., Ltd.
- Injection mould and method for manufacturing parts2 Apr 2026US 2026/0091539 A1
- Injector Nozzle Tip for Plastic Injection Molding Machines12 Feb 2026US 2026/0042248 A1INGLASS S.p.A.
Most cited
By later US patents
- Injection molding gate flow control118US 5,556,582 AStanford University · 1996
- Retractable pin mold104US 4,959,000 AAcushnet Company · 1990
- Apparatus for injection molding synthetic resin materials87US 4,106,887 AAsahi-Dow Limited · 1978
- Tip heated hot runner nozzle87US 5,871,786 AKona Corporation · 1999
- Manifold system having flow control87US 6,464,909 B1Synventive Molding Solutions, Inc. · 2002