B29C 70/52
Pultrusion, i.e. forming and compressing by continuously pulling through a die
B29C70/52 (Pultrusion, i.e. forming and compressing by continuously pulling through a die) appears on 940 US grants and 915 published applications in this corpus.
Search patents in B29C- Granted patents
- 940
- Published applications
- 915
- Assignees
- 505
- Inventors
- 1,919
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 11 | 0 |
| 1977 | 8 | 0 |
| 1978 | 4 | 0 |
| 1979 | 5 | 0 |
| 1980 | 2 | 0 |
| 1981 | 12 | 0 |
| 1982 | 3 | 0 |
| 1983 | 3 | 0 |
| 1984 | 6 | 0 |
| 1985 | 7 | 0 |
| 1986 | 7 | 0 |
| 1987 | 7 | 0 |
| 1988 | 14 | 0 |
| 1989 | 19 | 0 |
| 1990 | 17 | 0 |
| 1991 | 11 | 0 |
| 1992 | 23 | 0 |
| 1993 | 20 | 0 |
| 1994 | 17 | 0 |
| 1995 | 13 | 0 |
| 1996 | 16 | 0 |
| 1997 | 18 | 0 |
| 1998 | 21 | 0 |
| 1999 | 26 | 0 |
| 2000 | 17 | 0 |
| 2001 | 14 | 6 |
| 2002 | 9 | 24 |
| 2003 | 11 | 14 |
| 2004 | 14 | 14 |
| 2005 | 9 | 18 |
| 2006 | 7 | 13 |
| 2007 | 6 | 26 |
| 2008 | 4 | 12 |
| 2009 | 8 | 20 |
| 2010 | 4 | 21 |
| 2011 | 16 | 19 |
| 2012 | 16 | 29 |
| 2013 | 21 | 41 |
| 2014 | 21 | 45 |
| 2015 | 27 | 43 |
| 2016 | 25 | 53 |
| 2017 | 32 | 54 |
| 2018 | 38 | 72 |
| 2019 | 48 | 67 |
| 2020 | 48 | 60 |
| 2021 | 51 | 58 |
| 2022 | 46 | 58 |
| 2023 | 49 | 47 |
| 2024 | 41 | 44 |
| 2025 | 48 | 37 |
| 2026 | 20 | 20 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Process of modifying surface of a composite material base unit29 Sep 2026US 12,746,716 B2BASF SE Ludwigshafen am Rhein
- Fiber structure and fiber-reinforced composite material15 Sep 2026US 12,734,767 B2Kabushiki Kaisha Toyota Jidoshokki
- Continuous fiber reinforced thermoplastic resin composite material and method for producing same18 Aug 2026US 12,709,057 B2Lotte Chemical Corporation
- Manufacturing of wind turbine blade spar cap18 Aug 2026US 12,709,074 B2Lm Wind Power A/S
- Hybrid pultrusion plates for a conductive spar cap of a wind turbine blade11 Aug 2026US 12,704,110 B2Lm Wind Power A/S
- Frp rebar forming apparatus8 Oct 2026US 2026/0307342 A1Tsudakoma Kogyo Kabushiki Kaisha
- Method of producing a reinforcing bar1 Oct 2026US 2026/0295952 A1Nakagawa Sangyo Co., Ltd.
- Pultrusion process for manufacturing a fibre reinforced composite article for a wind turbine blade24 Sep 2026US 2026/0284987 A1Lm Wind Power A/S
- Pultruded plank, spar cap, wind turbine blade, and pultrusion preparation process24 Sep 2026US 2026/0286932 A1Owens Corning Intellectual Capital, LLC
- A wind turbine blade spar cap and a method for manufacturing a wind turbine blade spar cap27 Aug 2026US 2026/0251117 A1Vestas Wind Systems A/S
Most cited
By later US patents
- Polymer-coated stent structure277US 5,897,911 AAdvanced Cardiovascular Systems, Inc. · 1999
- Methods of making continuous length reinforced plastic articles248US 3,993,726 AHercules Incorporated · 1976
- Manufacturing composite materials233US 5,002,712 ABayer Aktiengesellschaft · 1991
- Methods for fiber reinforced additive manufacturing188US 9,370,896 B2Markforged, Inc. · 2016
- Fiber reinforced thermoplastic structural member139US 5,585,155 AAndersen Corporation · 1996