A44C 5/20
For open straps , chains or the like
Official title: for open straps {, chains or the like}
A44C5/20 (For open straps , chains or the like) appears on 745 US grants and 611 published applications in this corpus.
Search patents in A44C- Granted patents
- 745
- Published applications
- 611
- Assignees
- 340
- Inventors
- 1,207
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 11 | 0 |
| 1978 | 5 | 0 |
| 1979 | 4 | 0 |
| 1980 | 12 | 0 |
| 1981 | 10 | 0 |
| 1982 | 13 | 0 |
| 1983 | 11 | 0 |
| 1984 | 10 | 0 |
| 1985 | 16 | 0 |
| 1986 | 12 | 0 |
| 1987 | 15 | 0 |
| 1988 | 6 | 0 |
| 1989 | 10 | 0 |
| 1990 | 9 | 0 |
| 1991 | 14 | 0 |
| 1992 | 13 | 0 |
| 1993 | 12 | 0 |
| 1994 | 13 | 0 |
| 1995 | 10 | 0 |
| 1996 | 8 | 0 |
| 1997 | 13 | 0 |
| 1998 | 12 | 0 |
| 1999 | 5 | 0 |
| 2000 | 8 | 0 |
| 2001 | 10 | 1 |
| 2002 | 17 | 19 |
| 2003 | 15 | 10 |
| 2004 | 11 | 11 |
| 2005 | 4 | 16 |
| 2006 | 12 | 11 |
| 2007 | 5 | 10 |
| 2008 | 8 | 24 |
| 2009 | 8 | 17 |
| 2010 | 14 | 6 |
| 2011 | 5 | 13 |
| 2012 | 6 | 18 |
| 2013 | 11 | 9 |
| 2014 | 9 | 24 |
| 2015 | 13 | 32 |
| 2016 | 26 | 55 |
| 2017 | 32 | 43 |
| 2018 | 43 | 34 |
| 2019 | 31 | 46 |
| 2020 | 29 | 39 |
| 2021 | 41 | 35 |
| 2022 | 32 | 38 |
| 2023 | 29 | 24 |
| 2024 | 33 | 39 |
| 2025 | 27 | 25 |
| 2026 | 12 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- A44C 5/2071With the two ends of the strap or chain overlapping each other173
- A44C 5/2019Hooks116
- A44C 5/2076With the two ends of the strap or chain abutting each other109
- A44C 5/2057Fasteners locked by sliding or rotating of the male element of the82
- A44C 5/2042Fasteners provided with a turnable clamping lever76
- A44C 5/2052Fasteners provided with at least one push-button acting parallel to the main65
- A44C 5/209Fasteners specially adapted for necklaces or bracelets made of pearls54
- A44C 5/2047Fasteners provided with a v-shaped spring-tongue male member41
Recent patents
- Jewelry clasp positioning device and related methods18 Aug 2026US 12,708,183 B2Clasp'd LLC
- Attachment system for an electronic device7 Jul 2026US 12,672,701 B2Apple Inc.
- Watchbands with hook and loop fasteners30 Jun 2026US 12,667,169 B2Apple Inc.
- Fastening assembly, connecting strap assembly, and wearable device9 Jun 2026US 12,648,626 B2Huawei Technologies Co., Ltd.
- Wearable product and detachable tag assembly19 May 2026US 12,628,920 B24 Design Group, LLC
- Link and/or clasp, for example of a jewelry chain3 Sep 2026US 2026/0256251 A1Dexel S.A.
- Accessory connector with improved durability27 Aug 2026US 2026/0248246 A1Jumiere Co., Ltd.
- Clasp, strap, and timepiece20 Aug 2026US 2026/0240289 A1Seiko Epson Corporation
- Wristband barrel lock25 Jun 2026US 2026/0174196 A1Artemax, Inc.
- Tamper-resistant wearable band7 May 2026US 2026/0123719 A1Invisalert Solutions, Inc.
Most cited
By later US patents
- Magnetic clasp for wristwatch strap295US 4,941,236 ATimex Corporation · 1990
- Fitting device for accessory264US 5,367,891 AYugen Kaisha Furuyama Shouji · 1994
- Magnetic necklace clasp199US 5,050,276 A1991
- Personal locator transmitter164US 5,014,040 AInstantel Inc. · 1991
- Dynamic fit adjustment for wearable electronic devices93US 9,781,984 B2Apple Inc. · 2017