B23K 9/235
Preliminary treatment
B23K9/235 (Preliminary treatment) appears on 189 US grants and 241 published applications in this corpus.
Search patents in B23K- Granted patents
- 189
- Published applications
- 241
- Assignees
- 165
- Inventors
- 656
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 4 | 0 |
| 1985 | 3 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 4 | 0 |
| 2001 | 4 | 2 |
| 2002 | 2 | 1 |
| 2003 | 0 | 2 |
| 2004 | 2 | 5 |
| 2005 | 2 | 7 |
| 2006 | 5 | 3 |
| 2007 | 2 | 4 |
| 2008 | 0 | 4 |
| 2009 | 0 | 9 |
| 2010 | 4 | 2 |
| 2011 | 4 | 9 |
| 2012 | 2 | 3 |
| 2013 | 3 | 8 |
| 2014 | 7 | 16 |
| 2015 | 5 | 7 |
| 2016 | 5 | 15 |
| 2017 | 7 | 21 |
| 2018 | 5 | 16 |
| 2019 | 16 | 21 |
| 2020 | 15 | 13 |
| 2021 | 13 | 18 |
| 2022 | 13 | 20 |
| 2023 | 11 | 13 |
| 2024 | 8 | 9 |
| 2025 | 13 | 10 |
| 2026 | 3 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Method for producing a polymer-improved pipe element19 May 2026US 12,631,283 B2Minimax Viking Patent Management GmbH
- Methods and apparatus to convert welding-type power to welding-type power and resistive preheating power24 Mar 2026US 12,583,048 B2Illinois Tool Works Inc.
- Method of preparing a pipe-section16 Dec 2025US 12,498,057 B2Technip France
- Arc welding method, and method for inspecting welding strength of joint welded using arc welding method11 Nov 2025US 12,465,990 B2Nissan Motor Co., Ltd.
- Welding method for bimetal composite pipes for acidic environment10 Sep 2026US 2026/0264158 A1Southwest Petroleum University
- Apparatus and method of heating an area of a workpiece prior to welding said area of the workpiece and/or after welding the workpiece, and welding system comprising such an apparatus10 Sep 2026US 2026/0264162 A1Linde Aktiengesellschaft
- Method for producing and/or processing a continuous belt comprising a belt body made of metal2 Jul 2026US 2026/0183857 A1Berndorf Band GmbH
- Additive repair welding method for hot-working mold18 Dec 2025US 2025/0381608 A1CITIC Dicastal Co., Ltd.
- Method and apparatus for manufacturing a metal structure9 Oct 2025US 2025/0312860 A1Forg3D Ltd
Most cited
By later US patents
- Slotted autoregulating heater200US 4,717,814 AMetcal, Inc. · 1988
- Continuous manufacturing method for a metal welded tube and a manufacturing apparatus therefor66US 5,140,123 AKusakabe Electric & Machinery Co., Ltd. · 1992
- Welding high-strength nickel base superalloys60US 5,374,319 AChromalloy Gas Turbine Corporation · 1994
- Gas metal arc welding method53US 4,529,863 AP.P.I. Performance Process International · 1985
- Superalloy article cleaning and repair method51US 4,098,450 AGeneral Electric Company · 1978