A43B 21/51
With keyhole-shaped opening and pin
Official title: with keyhole-shaped opening and pin
A43B21/51 (With keyhole-shaped opening and pin) appears on 19 US grants and 23 published applications in this corpus.
Search patents in A43B- Granted patents
- 19
- Published applications
- 23
- Assignees
- 6
- Inventors
- 31
- Latest grant
- 13 May 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 1 | 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 | 1 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 1 |
| 2013 | 0 | 2 |
| 2014 | 1 | 1 |
| 2015 | 1 | 3 |
| 2016 | 1 | 1 |
| 2017 | 1 | 2 |
| 2018 | 2 | 3 |
| 2019 | 1 | 0 |
| 2020 | 1 | 2 |
| 2021 | 1 | 3 |
| 2022 | 0 | 1 |
| 2023 | 2 | 1 |
| 2024 | 4 | 0 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Article of footwear with heel cushion13 May 2025US 12,295,451 B2Fuerst Group, Inc.
- Shoe with pivoting heel10 Dec 2024US 12,161,190 B1
- Interchangeable heel device for a shoe and method25 Jun 2024US 12,016,429 B2
- Device and method for treating heel pain21 May 2024US 11,986,061 B2
- Shoe with a high heel to low heel conversion14 May 2024US 11,980,250 B2High-Low Heel, LLC
- Article of Footwear with Heel Cushion7 Aug 2025US 2025/0248481 A1Fuerst Group, Inc.
- An Interchangeable Heel Device for a Shoe and Method4 May 2023US 2023/0138799 A1
- Article of Footwear with Heel Cushion5 May 2022US 2022/0132982 A1Fuerst Group, Inc.
- Shoe with a high heel to low heel conversion23 Dec 2021US 2021/0392997 A1High-Low Heel, LLC
- Shoe comprising interchangeable outsole11 Nov 2021US 2021/0345724 A1
Most cited
By later US patents
- Adjustable heel assembly and shoe including the same11US 6,785,987 B22004
- Detachable heel for shoes and boots7US 4,667,421 A1987
- Shoe having removable and interchangeable heel assemblies with kit7US 9,009,990 B2Barbara-Jay's, LLC · 2015
- Adjustable heel assembly and shoe including the same6US 6,578,289 B12003
- Shoe with a high heel to low heel conversion4US 10,039,340 B2High-Low Heel, LLC · 2018