H05H 1/3421
Transferred arc or pilot arc mode
Official title: {Transferred arc or pilot arc mode}
H05H1/3421 (Transferred arc or pilot arc mode) appears on 135 US grants and 87 published applications in this corpus.
Search patents in H05H- Granted patents
- 135
- Published applications
- 87
- Assignees
- 62
- Inventors
- 271
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 0 | 0 |
| 1979 | 4 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 4 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 4 | 0 |
| 1990 | 5 | 0 |
| 1991 | 4 | 0 |
| 1992 | 5 | 0 |
| 1993 | 4 | 0 |
| 1994 | 1 | 0 |
| 1995 | 4 | 0 |
| 1996 | 3 | 0 |
| 1997 | 4 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 2 |
| 2003 | 1 | 1 |
| 2004 | 0 | 1 |
| 2005 | 1 | 1 |
| 2006 | 3 | 0 |
| 2007 | 1 | 3 |
| 2008 | 1 | 1 |
| 2009 | 0 | 1 |
| 2010 | 0 | 3 |
| 2011 | 1 | 3 |
| 2012 | 1 | 9 |
| 2013 | 5 | 3 |
| 2014 | 2 | 4 |
| 2015 | 6 | 11 |
| 2016 | 10 | 2 |
| 2017 | 7 | 14 |
| 2018 | 2 | 7 |
| 2019 | 4 | 3 |
| 2020 | 14 | 4 |
| 2021 | 4 | 6 |
| 2022 | 1 | 1 |
| 2023 | 3 | 3 |
| 2024 | 1 | 3 |
| 2025 | 1 | 0 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Assembly for a plasma arc torch and method of operation of the assembly for a plasma arc torch28 Jul 2026US 12,696,371 B2Thermacut, K.S.
- Wear part for an arc torch and plasma torch, arc torch and plasma torch comprising same, method for plasma cutting and method for producing an electrode for an arc torch and plasma torch13 Jan 2026US 12,526,909 B2Kjellberg-Stiftung
- Swirl ring and contact element for a plasma arc torch cartridge22 Apr 2025US 12,280,441 B2Hypertherm, Inc.
- Liquid cooled plasma arc torch28 May 2024US 11,997,779 B2Lincoln Global.Inc.
- Nozzle for a plasma arc torch head, laser cutting head and plasma laser cutting head, assemblies, plasma arc torch head and plasma arc torch comprising same, laser cutting head comprising same, and plasma laser cutting head comprising same26 Dec 2023US 11,856,684 B2Kjellberg-Stiftung
- Electrode for a contact-start plasma arc torch5 Mar 2026US 2026/0061511 A1Hypertherm, Inc.
- Arc-erosion resistant nozzles for plasma arc material processing systems7 Nov 2024US 2024/0373539 A1Hypertherm, Inc.
- Gas supply for a plasma arc material processing system22 Aug 2024US 2024/0284582 A1Hypertherm, Inc.
- Methods for mixing fluids for a plasma cutting torch18 Apr 2024US 2024/0130030 A1Esab AB
- Plasma torch with improved cooling system and related cooling method14 Dec 2023US 2023/0403782 A1Trafimet Group S.P.A.
Most cited
By later US patents
- Arc torch nozzle shield for plasma117US 5,132,512 AHypertherm, Inc. · 1992
- Arc plasma torch and method using contact starting112US 4,791,268 AHypertherm, Inc. · 1988
- Nozzle for plasma torch and method for introducing powder into the plasma plume of a plasma torch110US 4,866,240 AStoody Deloro Stellite, Inc. · 1989
- Plasma arc cutting process and apparatus using an oxygen-rich gas shield104US 5,695,662 AHypertherm, Inc. · 1997
- Apparatus and process for cooling a plasma arc electrode92US 4,902,871 AHypertherm, Inc. · 1990