B21K
Making forged or pressed metal products
Official title: MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS (making particular articles by working sheet metal without essentially removing material B21D; processing wire B21F; making pins, needles or nails B21G; making particular articles by rolling B21H; forging machines, pressing machines, hammering machines, in general B21J; making chains B21L; plating B23K)
B21K (Making forged or pressed metal products) appears on 3,698 US grants and 3,030 published applications in this corpus.
Search patents in B21K- Granted patents
- 3,698
- Published applications
- 3,030
- Assignees
- 1,792
- Inventors
- 7,019
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 47 | 0 |
| 1977 | 60 | 0 |
| 1978 | 59 | 0 |
| 1979 | 27 | 0 |
| 1980 | 28 | 0 |
| 1981 | 50 | 0 |
| 1982 | 45 | 0 |
| 1983 | 46 | 0 |
| 1984 | 53 | 0 |
| 1985 | 50 | 0 |
| 1986 | 49 | 0 |
| 1987 | 51 | 0 |
| 1988 | 41 | 0 |
| 1989 | 62 | 0 |
| 1990 | 44 | 0 |
| 1991 | 52 | 0 |
| 1992 | 37 | 0 |
| 1993 | 34 | 0 |
| 1994 | 48 | 0 |
| 1995 | 50 | 0 |
| 1996 | 65 | 0 |
| 1997 | 61 | 0 |
| 1998 | 83 | 0 |
| 1999 | 87 | 0 |
| 2000 | 91 | 0 |
| 2001 | 69 | 34 |
| 2002 | 99 | 89 |
| 2003 | 85 | 106 |
| 2004 | 78 | 134 |
| 2005 | 66 | 132 |
| 2006 | 82 | 108 |
| 2007 | 68 | 121 |
| 2008 | 66 | 101 |
| 2009 | 61 | 103 |
| 2010 | 65 | 110 |
| 2011 | 67 | 128 |
| 2012 | 85 | 134 |
| 2013 | 93 | 156 |
| 2014 | 115 | 143 |
| 2015 | 115 | 178 |
| 2016 | 134 | 163 |
| 2017 | 136 | 157 |
| 2018 | 122 | 177 |
| 2019 | 127 | 146 |
| 2020 | 145 | 166 |
| 2021 | 127 | 119 |
| 2022 | 104 | 103 |
| 2023 | 98 | 73 |
| 2024 | 84 | 58 |
| 2025 | 55 | 57 |
| 2026 | 32 | 34 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Main groups
Granted patents with any code in the group
- B21K 1/00Making machine elements2,228
- B21K 25/00Uniting components to form integral members481
- B21K 21/00Making hollow articles not covered by a single preceding sub-group431
- B21K 23/00Making other articles306
- B21K 27/00Handling devices205
- B21K 5/00Making tools or tool parts205
- B21K 3/00Making engine or like machine parts not covered by sub-groups of b21k1/00160
- B21K 17/00Making sport articles111
All 16 main groupsShow fewer
- B21K 29/00Arrangements for heating or cooling during processing48
- B21K 11/00Making cutlery wares31
- B21K 7/00Making railway appurtenances31
- B21K 15/00Making blacksmiths' goods14
- B21K 13/00Making locksmiths' goods12
- B21K 31/00Control devices specially adapted for positioning tool carriers9
- B21K 9/00Reconditioning railroad accessories4
- B21K 19/00Making articles for agricultural machinery2
Recent patents
- Mechanical locking sputtering target bonding method and target assemblies produced thereby6 Oct 2026US 12,752,336 B2Solstice Advanced Materials US, Inc.
- Screw and a method of manufacturing thereof15 Sep 2026US 12,734,576 B2
- Hollow wind turbine main shaft and profiling forging process and use thereof25 Aug 2026US 12,716,108 B2Zenkung Heavy Industry (Jiangsu) Co., Ltd.
- Method for production of a steel tubular product, in particular an airbag tubular product, and a steel tubular product produced using this method, in particular an airbag tubular product11 Aug 2026US 12,703,021 B2Benteler Steel/Tube GmbH
- Pull stud bolt installation and removal tool and tubular body manufacturing method thereof11 Aug 2026US 12,703,071 B2Protoeng Co., Ltd.
- Cookware surface8 Oct 2026US 2026/0305867 A1Imperial Great British Design Limited
- Progressive area forging method1 Oct 2026US 2026/0295654 A1Doosan Enerbility Co., Ltd.
- Hot forging die and production method therefor1 Oct 2026US 2026/0295656 A1
- Bearing element manufacturing method, bearing manufacturing method, machine manufacturing method, vehicle manufacturing method, bearing element, bearing, machine, and vehicle1 Oct 2026US 2026/0298290 A1Nsk Ltd.
- Method and system for processing aluminum alloy rims using rim serial numbers10 Sep 2026US 2026/0268270 A1House of Metals Company Limited
Most cited
By later US patents
- Golf club head with a face composed of a forged material388US 6,354,962 B1Callaway Golf Company · 2002
- Multiple material golf club head377US 6,491,592 B2Callaway Golf Company · 2002
- Golf club head with customizable center of gravity364US 6,739,983 B2Callaway Golf Company · 2004
- Multiple material golf head356US 6,471,604 B2Callaway Golf Company · 2002
- High cofficient of restitution golf club head353US 6,390,933 B1Callaway Golf Company · 2002