B28B 21/90
Methods or apparatus for demoulding or discharging after shaping
Official title: Methods or apparatus for {demoulding or} discharging after shaping
B28B21/90 (Methods or apparatus for demoulding or discharging after shaping) appears on 21 US grants and 15 published applications in this corpus.
Search patents in B28B- Granted patents
- 21
- Published applications
- 15
- Assignees
- 9
- Inventors
- 24
- Latest grant
- 7 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 2 |
| 2003 | 1 | 1 |
| 2004 | 2 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 1 | 2 |
| 2014 | 1 | 0 |
| 2015 | 0 | 0 |
| 2016 | 1 | 1 |
| 2017 | 1 | 0 |
| 2018 | 0 | 2 |
| 2019 | 1 | 1 |
| 2020 | 1 | 1 |
| 2021 | 0 | 1 |
| 2022 | 2 | 1 |
| 2023 | 1 | 0 |
| 2024 | 0 | 0 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Auxetic materials and structures for ceramic matrix composite airfoil mandrels7 Oct 2025US 12,435,008 B2Rtx Corporation
- Method for producing concrete pipes15 Aug 2023US 11,724,417 B2
- Devices and processes for making concrete articles29 Nov 2022US 11,511,460 B2
- Multi-piece mandrel for CMC components26 Jul 2022US 11,396,814 B2Raytheon Technologies Corporation
- Devices and processes for making concrete articles7 Jul 2020US 10,703,013 B2
- Auxetic materials and structures for ceramic matrix composite airfoil mandrels27 Mar 2025US 2025/0100941 A1Rtx Corporation
- Synthetic quartz manufacturing method8 Dec 2022US 2022/0388851 A1BCnC Co., Ltd.
- Multi-piece mandrel for cmc components9 Dec 2021US 2021/0381384 A1Raytheon Technologies Corporation
- Devices and Processes for Making Concrete Articles27 Aug 2020US 2020/0269467 A1
- Devices and Processes for Making Concrete Articles7 Nov 2019US 2019/0337187 A1
Most cited
By later US patents
- Method of forming lined pipe39US 5,028,368 AInternational Pipe Machinery Corporation · 1991
- Process for producing tubular ceramic structures of non-circular cross section10US 8,652,707 B2WATT Fuel Cell Corp. · 2014
- Production system for automatic casting of hollow bodies, in particular of concrete6US 5,648,108 APedershaab A/S · 1997
- Apparatus for the automatic ejection of concrete pipes5US 4,449,912 A1984
- Plant for the continuous and automated manufacturing of agglomerated sintered, vulcanized and pressed articles5US 4,714,420 APTP Patentierte Technologische Prozesse AG · 1987