B28B 7/20
Moulds for making shaped articles with undercut recesses
Official title: Moulds for making shaped articles with undercut recesses, e.g. dovetails
B28B7/20 (Moulds for making shaped articles with undercut recesses) appears on 52 US grants and 56 published applications in this corpus.
Search patents in B28B- Granted patents
- 52
- Published applications
- 56
- Assignees
- 24
- Inventors
- 71
- Latest grant
- 14 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 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 | 1 | 1 |
| 2003 | 1 | 2 |
| 2004 | 2 | 2 |
| 2005 | 0 | 2 |
| 2006 | 1 | 0 |
| 2007 | 1 | 2 |
| 2008 | 2 | 3 |
| 2009 | 0 | 4 |
| 2010 | 1 | 5 |
| 2011 | 1 | 4 |
| 2012 | 2 | 3 |
| 2013 | 4 | 2 |
| 2014 | 4 | 3 |
| 2015 | 5 | 5 |
| 2016 | 1 | 2 |
| 2017 | 2 | 1 |
| 2018 | 3 | 5 |
| 2019 | 3 | 3 |
| 2020 | 3 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 1 | 3 |
| 2024 | 0 | 0 |
| 2025 | 2 | 3 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Forming gas turbine engine airfoils from CMCs with a kickback to facilitate mandrel removal14 Apr 2026US 12,601,267 B2Rtx Corporation
- Form for vertically casting flared end products and method of manufacturing the same22 Jul 2025US 12,365,113 B2Hawkeyepedershaab Concrete Technologies, Inc.
- Concentric-ring single-sided dovetail groove ceramic tile back mold core and manufactured ceramic tile8 Apr 2025US 12,269,189 B2
- Modular foundation assembly29 Aug 2023US 11,739,492 B2
- Traffic flow barrier with corresponding production mold and hand cart24 Nov 2020US 10,844,559 B2Warning Lites of Minnesota, Inc.
- Method for manufacturing a tile product14 May 2026US 2026/0131503 A1Benelux Applied Surfaces, LLC
- Form for vertically casting flared end products and method of manufacturing the same16 Oct 2025US 2025/0319629 A1Hawkeyepedershaab Concrete Technologies, Inc.
- Forming gas turbine engine airfoils from cmcs with a kickback to facilitate mandrel removal21 Aug 2025US 2025/0264026 A1Rtx Corporation
- Form for vertically casting flared end products and method of manufacturing the same6 Mar 2025US 2025/0073950 A1Hawkeyepedershaab Concrete Technologies, Inc.
- Mold for precast reinforced concrete heavy duty retaining wall16 Nov 2023US 2023/0364827 A1
Most cited
By later US patents
- Methods for manufacturing three-dimensional devices and devices created thereby171US 7,410,606 B22008
- Mold for making a masonry block58US 7,140,867 B2Anchor Wall Systems, Inc. · 2006
- Concrete block and method of making same49US 7,208,112 B2Anchor Wall Systems, Inc. · 2007
- Precast curb system37US 4,971,475 AGroupe Permacon Inc. · 1990
- Method and apparatus for forming a precast curb system34US 5,139,721 AGroupe Permacon Inc. · 1992