B21L 7/00
Making chains or chain links by cutting single loops or loop-parts from
Official title: Making chains or chain links by cutting single loops or loop-parts from coils, assembling the cut parts and subsequently subjecting same to twisting with or without welding
B21L7/00 (Making chains or chain links by cutting single loops or loop-parts from) appears on 20 US grants and 9 published applications in this corpus.
Search patents in B21L- Granted patents
- 20
- Published applications
- 9
- Assignees
- 8
- Inventors
- 20
- Latest grant
- 10 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 3 |
| 2003 | 0 | 1 |
| 2004 | 0 | 1 |
| 2005 | 3 | 1 |
| 2006 | 2 | 1 |
| 2007 | 0 | 0 |
| 2008 | 1 | 1 |
| 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 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
| 2025 | 0 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Process for producing an ornamental chain10 Feb 2026US 12,543,827 B2Minervahub S.P.A.
- Method of forming of jewelry with multiple links11 Mar 2008US 7,340,878 B2Avraham Rozenvasser
- Method of forming chain links5 Dec 2006US 7,143,571 B2
- Method of forming chain links7 Feb 2006US 6,993,896 B2
- Method of forming chain links20 Sep 2005US 6,945,028 B2
- Process for producing an ornamental chain and ornamental chain29 Feb 2024US 2024/0065392 A1Minervahub S.P.A.
- Method and apparatus for forming jewelry chains formed from links21 Aug 2008US 2008/0196382 A1
- Method of forming of jewelry with multiple links19 Oct 2006US 2006/0230740 A1Avraham Rozenvasser
- Method of forming chain links8 Dec 2005US 2005/0268592 A1
- Method of forming chain links22 Apr 2004US 2004/0074221 A1
Most cited
By later US patents
- Fine jewelry diamond cut rope chain and method of manufacture thereof33US 5,531,065 A1996
- Fine jewelry diamond cut rope chain and method of manufacturing same30US 5,303,540 A1994
- Machine for the manufacture of chains, in particular of the type known as rope chain in the goldsmithery industry19US 4,493,183 AI.C.M. S.p.A. Italiana Costruzioni Metalmeccaniche · 1985
- Chain link16US 5,636,506 A1997
- Machine and a method for constructing a chain having automatically shaped and welded chain links12US 4,275,555 AGori & Zucchi S.p.A. · 1981