B29C 45/27
Sprue channels
Official title: Sprue channels {; Runner channels or runner nozzles}
B29C45/27 (Sprue channels) appears on 2,427 US grants and 2,048 published applications in this corpus.
Search patents in B29C- Granted patents
- 2,427
- Published applications
- 2,048
- Assignees
- 920
- Inventors
- 3,139
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 11 | 0 |
| 1977 | 14 | 0 |
| 1978 | 19 | 0 |
| 1979 | 5 | 0 |
| 1980 | 14 | 0 |
| 1981 | 33 | 0 |
| 1982 | 16 | 0 |
| 1983 | 25 | 0 |
| 1984 | 20 | 0 |
| 1985 | 19 | 0 |
| 1986 | 19 | 0 |
| 1987 | 33 | 0 |
| 1988 | 37 | 0 |
| 1989 | 29 | 0 |
| 1990 | 51 | 0 |
| 1991 | 41 | 0 |
| 1992 | 43 | 0 |
| 1993 | 43 | 0 |
| 1994 | 45 | 0 |
| 1995 | 38 | 0 |
| 1996 | 38 | 0 |
| 1997 | 32 | 0 |
| 1998 | 65 | 0 |
| 1999 | 51 | 0 |
| 2000 | 56 | 0 |
| 2001 | 71 | 14 |
| 2002 | 57 | 53 |
| 2003 | 51 | 63 |
| 2004 | 59 | 115 |
| 2005 | 46 | 88 |
| 2006 | 58 | 109 |
| 2007 | 89 | 93 |
| 2008 | 78 | 99 |
| 2009 | 58 | 114 |
| 2010 | 82 | 81 |
| 2011 | 74 | 79 |
| 2012 | 72 | 68 |
| 2013 | 47 | 94 |
| 2014 | 56 | 91 |
| 2015 | 56 | 71 |
| 2016 | 65 | 91 |
| 2017 | 43 | 75 |
| 2018 | 68 | 124 |
| 2019 | 65 | 92 |
| 2020 | 79 | 74 |
| 2021 | 80 | 79 |
| 2022 | 59 | 78 |
| 2023 | 63 | 66 |
| 2024 | 60 | 52 |
| 2025 | 64 | 53 |
| 2026 | 30 | 32 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B29C 45/2701Details not specific to hot or cold runner channels835
- B29C 45/28Closure devices therefor811
- B29C 45/2737Heating or cooling means therefor490
- B29C 45/2725Manifolds334
- B29C 45/30Flow control means disposed within the sprue channel254
- B29C 45/278Nozzle tips192
- B29C 45/2735For non-coaxial gates110
- B29C 2045/2761Seals between nozzle and mould or gateIndexing code109
All 26 subgroupsShow fewer
- B29C 45/2756Cold runner channels63
- B29C 2045/2766Heat insulation between nozzle and mouldIndexing code53
- B29C 2045/277Spacer means or pressure pads between manifold and mould platesIndexing code48
- B29C 2045/2796Axially movable nozzles or nozzle tipsIndexing code47
- B29C 2045/2772Means for fixing the nozzle to the manifoldIndexing code46
- B29C 2045/2762Seals between nozzle and manifoldIndexing code38
- B29C 2045/279Controlling the flow of material of two or more nozzles or gatesIndexing code36
- B29C 2045/2759Nozzle centering or guiding meansIndexing code30
- B29C 2045/2779Nozzles with a plurality of outletsIndexing code28
- B29C 2045/2775Nozzles or parts thereof being mountable or exchangeable from the front sideIndexing code23
- B29C 2045/2777Means for controlling heat flow or temperature distribution in the nozzleIndexing code22
- B29C 2045/2788Nozzles having a polygonal cross sectionIndexing code18
- B29C 45/2758Means for preventing drooling by decompression of the moulding material18
- B29C 2045/2791Alignment means between nozzle and manifoldIndexing code14
- B29C 2045/2795Insulated runnersIndexing code12
- B29C 2045/2774The nozzle head or the collar portion and central portion being madeIndexing code11
- B29C 2045/2793Means for providing access to the runner systemIndexing code9
- B29C 2045/2764Limited contact between nozzle and mouldIndexing code8
Recent patents
- Side gate nozzle and injection mold15 Sep 2026US 12,734,737 B2Thermoplay S.p,A.
- Mold device and injection molding system15 Sep 2026US 12,734,738 B2Sumitomo Heavy Industries, Ltd.
- Polyamide compositions25 Aug 2026US 12,714,091 B2Celanese Polymers Holding, Inc.
- Gearwheel with an insert portion made of metal and an outer portion made of plastic, steering mechanism with such a gearwheel and method for producing such a gearwheel25 Aug 2026US 12,716,478 B2ZF Friedrichshafen AG
- Injection mold and injection molding method18 Aug 2026US 12,709,048 B2Huawei Technologies Co., Ltd.
- Method for making a molded article8 Oct 2026US 2026/0308362 A1Milliken & Company
- Rotor for a fluid pump, and method and mold for manufacturing same24 Sep 2026US 2026/0286968 A1Ecp Entwicklungsgesellschaft Mbh
- Foamed article with improved surface aesthetics10 Sep 2026US 2026/0264300 A1Sabic Global Technologies B.V.
- Injection moulding tool with multi-part mould insert frame3 Sep 2026US 2026/0257406 A1FOSTAG Formenbau AG
- An injection molding machine27 Aug 2026US 2026/0249532 A1Lego A/S
Most cited
By later US patents
- Method of making smart cards315US 5,955,021 ACardXX, Inc. · 1999
- Method for making smart cards using isotropic thermoset adhesive materials281US 6,256,873 B1CardXX, Inc. · 2001
- Method and apparatus for calibrating and controlling multiple heaters276US 5,280,422 AWatlow/Winona, Inc. · 1994
- Golf ball injection mold228US 5,827,548 ALisco, Inc. · 1998
- Mold device for making plastic articles from resin193US 4,451,224 AGeneral Electric Company · 1984