A43D 31/00
Machines for making or inserting shank stiffeners
A43D31/00 (Machines for making or inserting shank stiffeners) appears on 13 US grants and 2 published applications in this corpus.
Search patents in A43D- Granted patents
- 13
- Published applications
- 2
- Assignees
- 4
- Inventors
- 13
- Latest grant
- 13 May 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Natural-cushioning, sock liner apparatus and method13 May 2025US 12,295,461 B2
- Techniques for stiffening shoe insoles4 Jun 1985US 4,520,522 ABush Universal, Inc.
- Molded shanks24 Jul 1984US 4,461,101 ABush Universal, Inc.
- Techniques for stiffening shoe insoles14 Feb 1984US 4,430,767 ABush Universal, Inc.
- Techniques for stripping a sleeve from resin impregnated fibrous rovings13 Sep 1983US 4,403,361 ABush Universal, Inc.
Most cited
By later US patents
- Techniques for stiffening shoe insoles7US 4,430,767 ABush Universal, Inc. · 1984
- Technique and articles for forming shoe shanks5US 4,236,268 ABush Universal, Inc. · 1980
- Apparatus for stiffening shoe insoles2US 4,122,573 ABush Universal, Inc. · 1978
- Molded shanks2US 4,392,266 ABush Universal, Inc. · 1983
- Techniques for stiffening shoe insoles2US 4,520,522 ABush Universal, Inc. · 1985