B21D 53/52
Fastener elements
Official title: fastener elements; Attaching such elements so far as this procedure is combined with the process for making the elements
B21D53/52 (Fastener elements) appears on 19 US grants and 12 published applications in this corpus.
Search patents in B21D- Granted patents
- 19
- Published applications
- 12
- Assignees
- 10
- Inventors
- 29
- Latest grant
- 28 Mar 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 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 | 3 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 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 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 1 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 1 | 0 |
| 2012 | 0 | 1 |
| 2013 | 1 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 3 |
| 2016 | 1 | 0 |
| 2017 | 2 | 0 |
| 2018 | 2 | 2 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 0 | 1 |
| 2023 | 1 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Slider and slider assembling method28 Mar 2023US 11,612,221 B2YKK Corporation
- Zip slider structure4 Sep 2018US 10,064,456 B2Chung Chwan Enterprise Co., Ltd.
- Metal one piece locking slide and pull for slide fastener4 Sep 2018US 10,064,457 B2Shah Technologies, LLC
- Slider and method for repairing slide fastener6 Jun 2017US 9,668,547 B2YKK Corporation
- Slide fastener attachment method30 May 2017US 9,661,900 B2YKK Corporation
- Fastener element, fastener stringer, and fastener element evaluation method16 Oct 2025US 2025/0318604 A1YKK Corporation
- Machining equipment for double-point zipper teeth5 May 2022US 2022/0133001 A1Dongguan Lexiang Hardware & Zipper Products Co., LTD
- Slider and slider assembling method22 Jul 2021US 2021/0219672 A1YKK Corporation
- Metal one piece locking slide and pull for slide fastener21 Jun 2018US 2018/0168292 A1Shah Technologies, LLC
- Zip slider structure15 Mar 2018US 2018/0070685 A1Chung Chwan Enterprise Co., Ltd.
Most cited
By later US patents
- Method and apparatus for manufacturing slide fastener coupling elements5US 4,388,751 AYoshida Kogyo K. K. · 1983
- Apparatus for forming and planting slide fastener elements5US 4,550,477 AYoshida Kogyo K. K. · 1985
- Method of and apparatus for manufacturing slide fastener coupling elements4US 4,432,126 AYoshida Kogyo K. K. · 1984
- Method for manufacturing slide fastener coupling elements4US 5,367,758 AYoshida Kogyo K. K. · 1994
- Method and apparatus for forming slide-fastener coupling element4US 5,495,655 AYoshida Kogyo K. K. · 1996