B21F 37/02
Manufacture of rings from wire: of resilient rings
Official title: of resilient rings, e.g. key-rings
B21F37/02 (Manufacture of rings from wire: of resilient rings) appears on 10 US grants and 6 published applications in this corpus.
Search patents in B21F- Granted patents
- 10
- Published applications
- 6
- Assignees
- 10
- Inventors
- 23
- Latest grant
- 13 Aug 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 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 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 2 |
| 2005 | 0 | 0 |
| 2006 | 1 | 0 |
| 2007 | 1 | 1 |
| 2008 | 0 | 0 |
| 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 | 1 |
| 2020 | 1 | 0 |
| 2021 | 0 | 1 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 2 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Method and system for on-demand retaining ring forming and installation13 Aug 2024US 12,059,721 B2Beijingwest Industries Co., Ltd.
- Method and facility for the production of a braided bead wire for a pneumatic tire, comprising the folding of a surplus length of braiding wire11 Jun 2024US 12,005,490 B2Compagnie Generale Des Etablissements Michelin
- Segment, combination oil ring, and manufacturing method for a segment21 Apr 2020US 10,626,991 B2Tpr Co., Ltd.
- Metallic wire for grip rings, producing method and apparatus thereof, producing method and apparatus of grip rings for tube connector with use of metallic wire and grip rings for tube connector20 Nov 2007US 7,296,452 B2Hiroaki
- Wire rod-forming machine16 May 2006US 7,043,951 B2Asahi - Seiki Manf. Co.
- Method and system for on-demand retaining ring forming and installation9 May 2024US 2024/0149329 A1Beijingwest Industries Co., Ltd.
- Method and facility for the production of a braided bead wire for a pneumatic tire, comprising the folding of a surplus length of braiding wire7 Oct 2021US 2021/0308739 A1Compagnie Generale Des Etablissements Michelin
- Segment, combination oil ring, and manufacturing method for a segment28 Nov 2019US 2019/0360584 A1Tpr Co., Ltd.
- Metallic wire for grip rings, producing method and apparatus thereof, producing method and apparatus of grip rings for tube connector with use of metallic wire and grip rings for tube connector29 Mar 2007US 2007/0068592 A1Hiroaki Kanai
- Grip ring metal wire material, method of producing such grip ring metal wire material and device for producng such grip ring metal wire material, and method of producing pipe coupling grip using metal wire material, device for producing such pipe coupling grip ring, and pipe coupling grip ring23 Sep 2004US 2004/0182123 A1
Most cited
By later US patents
- Method and apparatus for making lock washers6US 4,285,084 AMSL Industries, Inc. · 1981
- Apparatus and method of forming needle blanks from wire stock6US 5,676,008 AUnited States Surgical Corporation · 1997
- Spring loop key ring and method and apparatus for making same3US 4,051,874 A1977
- Method of forming a spacer used to space end to end piping3US 5,253,507 AG.A.L. Gage Co. · 1993
- Wire bending machine2US 4,361,025 A1982