B22F 3/24
After-treatment of workpieces or articles
Official title: After-treatment of workpieces or articles {(B22F3/1146 takes precedence)}
B22F3/24 (After-treatment of workpieces or articles) appears on 2,133 US grants and 2,832 published applications in this corpus.
Search patents in B22F- Granted patents
- 2,133
- Published applications
- 2,832
- Assignees
- 1,125
- Inventors
- 5,650
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 8 | 0 |
| 1978 | 9 | 0 |
| 1979 | 6 | 0 |
| 1980 | 8 | 0 |
| 1981 | 3 | 0 |
| 1982 | 5 | 0 |
| 1983 | 8 | 0 |
| 1984 | 15 | 0 |
| 1985 | 12 | 0 |
| 1986 | 10 | 0 |
| 1987 | 10 | 0 |
| 1988 | 10 | 0 |
| 1989 | 16 | 0 |
| 1990 | 17 | 0 |
| 1991 | 12 | 0 |
| 1992 | 13 | 0 |
| 1993 | 4 | 0 |
| 1994 | 11 | 0 |
| 1995 | 10 | 0 |
| 1996 | 16 | 0 |
| 1997 | 14 | 0 |
| 1998 | 14 | 0 |
| 1999 | 13 | 0 |
| 2000 | 20 | 0 |
| 2001 | 19 | 6 |
| 2002 | 23 | 17 |
| 2003 | 24 | 28 |
| 2004 | 18 | 54 |
| 2005 | 11 | 32 |
| 2006 | 18 | 42 |
| 2007 | 18 | 39 |
| 2008 | 18 | 54 |
| 2009 | 18 | 43 |
| 2010 | 33 | 56 |
| 2011 | 24 | 53 |
| 2012 | 42 | 68 |
| 2013 | 39 | 85 |
| 2014 | 34 | 62 |
| 2015 | 52 | 153 |
| 2016 | 77 | 181 |
| 2017 | 90 | 255 |
| 2018 | 107 | 242 |
| 2019 | 142 | 260 |
| 2020 | 183 | 235 |
| 2021 | 191 | 216 |
| 2022 | 167 | 175 |
| 2023 | 165 | 146 |
| 2024 | 161 | 155 |
| 2025 | 108 | 104 |
| 2026 | 78 | 71 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B22F 2003/248Thermal after-treatmentIndexing code727
- B22F 2003/247Removing material: carving, cleaning, grinding, hobbing, honing, lapping, polishing, milling, shaving, skivingIndexing code487
- B22F 2003/241Chemical after-treatment on the surfaceIndexing code370
- B22F 3/26Impregnating342
- B22F 2003/245Making recesses, grooves etc on the surface by removing materialIndexing code49
Recent patents
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- Method of manufacturing permanent magnets6 Oct 2026US 12,755,879 B2
- Sintered engine part and method of manufacture thereof29 Sep 2026US 12,746,597 B2L. E. Jones Company
- Surface-coated cutting tool29 Sep 2026US 12,746,604 B2Mitsubishi Materials Corporation
- Zirconia mill blank for dental cutting and machining and preparing method thereof22 Sep 2026US 12,740,847 B2Shofu Inc.
- Rare earth sintered magnet, method for producing rare earth sintered magnet, rotor, and rotary machine8 Oct 2026US 2026/0311916 A1Mitsubishi Electric Corporation
- Method of manufacturing a coil component1 Oct 2026US 2026/0295668 A1Murata Manufacturing Co., Ltd.
- Rare earth sintered magnet, method for producing rare earth sintered magnet, rotor, and rotary machine1 Oct 2026US 2026/0302010 A1Mitsubishi Electric Corporation
- Precision nozzle and process for producing the same24 Sep 2026US 2026/0285669 A1Kyoritsu Gokin Co., Ltd.
- High-strength metal-matrix composite and method for producing high-strength metal-matrix composite24 Sep 2026US 2026/0286474 A1Advanced Composite Corporation
Most cited
By later US patents
- Fabricating multi-part assemblies597US 9,815,118 B1Desktop Metal, Inc. · 2017
- Temperature resistant abrasive compact and method for making same436US 4,224,380 AGeneral Electric Company · 1980
- Polycrystalline diamond cutters with working surfaces having varied wear resistance while maintaining impact strength334US 6,601,662 B2Grant Prideco, L.P. · 2003
- Prosthetic hip joint having sintered polycrystalline diamond compact articulation surfaces277US 6,290,726 B1Diamicron, Inc. · 2001
- Diamond-surfaced cup for use in a prosthetic joint262US 6,488,715 B1Diamicron, Inc. · 2002