B21K 1/00
Making machine elements
B21K1/00 (Making machine elements) appears on 2,228 US grants and 1,754 published applications in this corpus.
Search patents in B21K- Granted patents
- 2,228
- Published applications
- 1,754
- Assignees
- 1,064
- Inventors
- 4,176
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 30 | 0 |
| 1977 | 34 | 0 |
| 1978 | 36 | 0 |
| 1979 | 17 | 0 |
| 1980 | 15 | 0 |
| 1981 | 31 | 0 |
| 1982 | 27 | 0 |
| 1983 | 35 | 0 |
| 1984 | 35 | 0 |
| 1985 | 34 | 0 |
| 1986 | 33 | 0 |
| 1987 | 42 | 0 |
| 1988 | 25 | 0 |
| 1989 | 42 | 0 |
| 1990 | 26 | 0 |
| 1991 | 33 | 0 |
| 1992 | 20 | 0 |
| 1993 | 26 | 0 |
| 1994 | 28 | 0 |
| 1995 | 33 | 0 |
| 1996 | 38 | 0 |
| 1997 | 39 | 0 |
| 1998 | 50 | 0 |
| 1999 | 62 | 0 |
| 2000 | 59 | 0 |
| 2001 | 45 | 23 |
| 2002 | 52 | 38 |
| 2003 | 45 | 61 |
| 2004 | 38 | 87 |
| 2005 | 39 | 78 |
| 2006 | 54 | 74 |
| 2007 | 45 | 82 |
| 2008 | 44 | 63 |
| 2009 | 33 | 68 |
| 2010 | 44 | 70 |
| 2011 | 45 | 75 |
| 2012 | 52 | 78 |
| 2013 | 65 | 85 |
| 2014 | 63 | 71 |
| 2015 | 65 | 93 |
| 2016 | 64 | 92 |
| 2017 | 66 | 88 |
| 2018 | 62 | 106 |
| 2019 | 75 | 79 |
| 2020 | 91 | 103 |
| 2021 | 75 | 70 |
| 2022 | 66 | 59 |
| 2023 | 57 | 42 |
| 2024 | 49 | 29 |
| 2025 | 26 | 28 |
| 2026 | 18 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- 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.
- Pull stud bolt installation and removal tool and tubular body manufacturing method thereof11 Aug 2026US 12,703,071 B2Protoeng Co., Ltd.
- Method for producing a component which has a toothing profile, and tool device4 Aug 2026US 12,697,656 B2Schaeffler Technologies AG & Co. KG
- Rack bar and steering device7 Jul 2026US 12,673,359 B2Hitachi Astemo, Ltd.
- 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
- Drive shaft27 Aug 2026US 2026/0251174 A1CP Tech GmbH
- Method and mechanical arrangement for producing a tubular hollow body from a tubular hollow body blank, in particular for producing a hollow shaft from a shaft blank13 Aug 2026US 2026/0233293 A1FELSS Systems GmbH
- Method for forming a face spline in a constant velocity joint6 Aug 2026US 2026/0225150 A1Hansae Mobility Co., Ltd.
Most cited
By later US patents
- Screw heads216US 4,084,478 APhillips Screw Company · 1978
- Method for producing male conical threads117US 4,689,984 A1987
- Forged clearing wheel for agricultural residue94US 5,346,020 A1994
- Hydroforming of compound tubes93US 5,333,775 AGeneral Motors Corporation · 1994
- Flexible shaft and method for manufacturing same91US 5,488,761 A1996