B21C 47/323
Slits or pinces on the cylindrical wall of a reel or bobbin
Official title: {Slits or pinces on the cylindrical wall of a reel or bobbin, adapted to grip the end of the material being wound}
B21C47/323 (Slits or pinces on the cylindrical wall of a reel or bobbin) appears on 24 US grants and 14 published applications in this corpus.
Search patents in B21C- Granted patents
- 24
- Published applications
- 14
- Assignees
- 21
- Inventors
- 47
- Latest grant
- 13 May 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 3 |
| 2009 | 2 | 2 |
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 1 | 0 |
| 2013 | 1 | 1 |
| 2014 | 1 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 1 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 1 |
| 2022 | 1 | 0 |
| 2023 | 1 | 0 |
| 2024 | 0 | 1 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Aluminum plate coiling device13 May 2025US 12,296,369 B2Alutec Co., Ltd
- Mult threader with separator shaft assembly and clamp bar18 Jul 2023US 11,702,313 B2Butech, Inc.
- Mandrel with compensating grip16 Aug 2022US 11,413,671 B2
- Pivoting gripper mandrel22 Oct 2019US 10,450,158 B2
- Hook slot to retain a wire within a spool10 Jun 2014US 8,746,608 B2Lincoln Global.Inc.
- Aluminum plate coiling device29 Feb 2024US 2024/0066578 A1Alutec Co., Ltd
- Mult threader with separator shaft assembly and clamp bar5 Aug 2021US 2021/0238004 A1Butech, Inc.
- Mandrel With Compensating Grip28 May 2020US 2020/0164418 A1
- Novel turn9 Aug 2018US 2018/0222710 A1
- Mandrel of coil box22 Oct 2015US 2015/0298190 A1Posco
Most cited
By later US patents
- Take-up reel for metallic filament32US 5,485,968 ABridgestone Metalpha Corporation · 1996
- Process and apparatus for the production of corrosion protection for cables made of parallel wire strands14US 4,192,057 A1980
- Apparatus for producing parallel wire strands for bridges and the like by winding and unwinding strand of large cross-section and for simultaneously applying corrosion protection thereto13US 4,117,582 A1978
- Method for spooling a strip of wires, and a spooled strip of wires13US 5,803,396 ANV Bekaert SA · 1998
- Method and apparatus for handling a coil12US 3,999,665 AStamco Division, The Monarch Machine Tool Company · 1976