B21L 9/02
Making chains or chain links, the links being composed of two or
Official title: of roller-chain or other plate-link type
B21L9/02 (Making chains or chain links, the links being composed of two or) appears on 134 US grants and 92 published applications in this corpus.
Search patents in B21L- Granted patents
- 134
- Published applications
- 92
- Assignees
- 70
- Inventors
- 267
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 4 | 0 |
| 1986 | 5 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 3 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 6 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 5 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 2 |
| 2002 | 5 | 5 |
| 2003 | 5 | 7 |
| 2004 | 1 | 5 |
| 2005 | 2 | 1 |
| 2006 | 6 | 3 |
| 2007 | 1 | 6 |
| 2008 | 2 | 12 |
| 2009 | 5 | 3 |
| 2010 | 6 | 1 |
| 2011 | 2 | 4 |
| 2012 | 3 | 5 |
| 2013 | 2 | 3 |
| 2014 | 5 | 3 |
| 2015 | 4 | 2 |
| 2016 | 4 | 1 |
| 2017 | 0 | 3 |
| 2018 | 3 | 6 |
| 2019 | 3 | 2 |
| 2020 | 3 | 6 |
| 2021 | 2 | 2 |
| 2022 | 4 | 5 |
| 2023 | 2 | 1 |
| 2024 | 4 | 2 |
| 2025 | 1 | 2 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Track disassembling device19 May 2026US 12,630,239 B2Huaneng Yimin Coal-Power Co., Ltd.
- Chain damping system and method25 Feb 2025US 12,234,886 B2
- Method for producing gourmette jewellery articles24 Dec 2024US 12,172,205 B2Marco Bicego S.P.A.
- Metal component and method for producing same20 Aug 2024US 12,065,729 B2Iwis Motorsysteme GmbH & Co. KG
- Chain tool for different speed chains13 Aug 2024US 12,059,723 B2
- Handheld Tool for Detaching and Attaching Agricultural Chain Link3 Apr 2025US 2025/0108432 A1
- Processing chains16 Jan 2025US 2025/0018462 A1
- Track disassembling device19 Dec 2024US 2024/0417932 A1Huaneng Yimin Coal-Power Co., Ltd.
- Method for producing gourmette jewellery articles12 Sep 2024US 2024/0300006 A1Marco Bicego S.P.A.
- Chain and method for manufacturing a chain12 Oct 2023US 2023/0321716 A1Kaga Industries Co., Ltd.
Most cited
By later US patents
- Linked ring structures49US 7,086,218 B1M & J - R & R Grosbard, Inc. · 2006
- Power transmission chain30US 4,509,937 ABorg-Warner Corporation · 1985
- Silent chain30US 6,068,568 ATsubakimoto Chain Co. · 2000
- Power transmission chain29US 4,509,323 ABorg-Warner Corporation · 1985
- Seal device in a roller chain22US 4,094,515 A1978