B23K
Soldering or unsoldering
Official title: Soldering or unsoldering; welding; cladding or plating by soldering or welding; cutting by applying heat locally, e.g. flame cutting; working by laser beam
B23K (Soldering or unsoldering) appears on 51,749 US grants and 51,020 published applications in this corpus.
Search patents in B23K- Granted patents
- 51,749
- Published applications
- 51,020
- Assignees
- 13,392
- Inventors
- 88,104
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 497 | 0 |
| 1977 | 447 | 0 |
| 1978 | 452 | 0 |
| 1979 | 374 | 0 |
| 1980 | 409 | 0 |
| 1981 | 404 | 0 |
| 1982 | 419 | 0 |
| 1983 | 419 | 0 |
| 1984 | 528 | 0 |
| 1985 | 607 | 0 |
| 1986 | 584 | 0 |
| 1987 | 703 | 0 |
| 1988 | 621 | 0 |
| 1989 | 711 | 0 |
| 1990 | 657 | 0 |
| 1991 | 681 | 0 |
| 1992 | 707 | 0 |
| 1993 | 716 | 0 |
| 1994 | 711 | 0 |
| 1995 | 665 | 0 |
| 1996 | 652 | 0 |
| 1997 | 633 | 0 |
| 1998 | 811 | 0 |
| 1999 | 880 | 0 |
| 2000 | 1079 | 0 |
| 2001 | 1117 | 397 |
| 2002 | 1078 | 1107 |
| 2003 | 1149 | 1198 |
| 2004 | 1048 | 1454 |
| 2005 | 820 | 1577 |
| 2006 | 833 | 1622 |
| 2007 | 702 | 1463 |
| 2008 | 664 | 1499 |
| 2009 | 654 | 1548 |
| 2010 | 1052 | 1595 |
| 2011 | 911 | 1596 |
| 2012 | 1073 | 1580 |
| 2013 | 1269 | 1927 |
| 2014 | 1381 | 2202 |
| 2015 | 1527 | 2609 |
| 2016 | 1635 | 2685 |
| 2017 | 1893 | 2777 |
| 2018 | 1836 | 2747 |
| 2019 | 2292 | 2837 |
| 2020 | 2406 | 2678 |
| 2021 | 2039 | 2679 |
| 2022 | 1923 | 2487 |
| 2023 | 1841 | 2454 |
| 2024 | 2007 | 2480 |
| 2025 | 1927 | 2199 |
| 2026 | 1305 | 1623 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Main groups
Granted patents with any code in the group
- B23K 26/00Working by laser beam18,906
- B23K 2101/00Articles made by soldering, welding or cuttingIndexing code13,406
- B23K 2103/00Materials to be soldered, welded or cutIndexing code9,749
- B23K 9/00Arc welding or cutting8,457
- B23K 35/00Rods, electrodes, materials, or media, for use in soldering, welding, or cutting7,563
- B23K 20/00Non-electric welding by applying impact or other pressure, with or without the6,529
- B23K 1/00Soldering6,160
- B23K 37/00Auxiliary devices or processes, not specially adapted for a procedure covered by4,224
All 21 main groupsShow fewer
- B23K 11/00Resistance welding3,468
- B23K 3/00Tools, devices or special appurtenances for soldering3,045
- B23K 31/00Processes relevant to this subclass, specially adapted for particular articles or purposes2,766
- B23K 15/00Electron-beam welding or cutting1,405
- B23K 10/00Welding or cutting by means of a plasma1,366
- B23K 33/00Soldering or unsoldering: specially-profiled edge portions of workpieces for making soldering or860
- B23K 7/00Cutting, scarfing, or desurfacing by applying flames619
- B23K 13/00Welding by high-frequency current heating413
- B23K 28/00Welding or cutting not covered by groups b23k5/00 - b23k26/00311
- B23K 23/00Alumino-thermic welding145
- B23K 5/00Gas flame welding130
- B23K 25/00Slag welding, i.e. using a heated layer or mass of powder, slag86
- B23K 17/00Use of the energy of nuclear particles in welding or related techniques37
Recent patents
- Manufacturing method for heat exchanger6 Oct 2026US 12,752,357 B2Daikin Industries, Ltd.
- Sealed squeegee for supplying solder paste with uniform density6 Oct 2026US 12,752,358 B2Ese Co., Ltd.
- Pin brazed mounting arrangement6 Oct 2026US 12,752,359 B1Tractian Technologies Inc
- Solder bump forming member, method for manufacturing solder bump forming member, and method for manufacturing electrode substrate provided with solder bump6 Oct 2026US 12,752,360 B2Resonac Corporation
- Single phase input detection and power source protection6 Oct 2026US 12,752,361 B2Illinois Tool Works Inc.
- Steel pipe out-of-roundness prediction method, steel pipe out-of-roundness control method, steel pipe manufacturing method, steel pipe out-of-roundness prediction model generation method, and steel pipe out-of-roundness prediction device8 Oct 2026US 2026/0307127 A1Jfe Steel Corporation
- Seam position detection method, manufacturing method of welded steel pipe, quality control method of welded steel pipe, seam position detection apparatus, and manufacturing equipment of welded steel pipe8 Oct 2026US 2026/0307128 A1Jfe Steel Corporation
- System and method for adjusting welding signals8 Oct 2026US 2026/0307162 A1Lincoln Global.Inc.
- Welding guiding system providing high-quality images8 Oct 2026US 2026/0307163 A1Otos Wing Co., Ltd.
- Portable welding wire feeders and separable wire sources8 Oct 2026US 2026/0307164 A1Illinois Tool Works Inc.
Most cited
By later US patents
- Rotary drive shaft assemblies for surgical instruments with articulatable end effectors1,997US 8,747,238 B2Ethicon Endo-Surgery, Inc. · 2014
- Machining apparatus with automatic restart function986US 5,293,024 AMitsubishi Denki Kabushiki Kaisha · 1994
- Method and apparatus for producing parts by selective sintering887US 4,863,538 ABoard of Regents, The University of Texas System · 1989
- Method for forming staple pockets of a surgical stapler883US 8,008,598 B2Tyco Healthcare Group LP · 2011
- Forming structures from CAD solid models580US 6,391,251 B1Optomec Design Company · 2002