B23K 9/1018
Improvements of the power factor of arc welding installations
Official title: {Improvements of the power factor of arc welding installations}
B23K9/1018 (Improvements of the power factor of arc welding installations) appears on 4 US grants and 5 published applications in this corpus.
Search patents in B23K- Granted patents
- 4
- Published applications
- 5
- Assignees
- 5
- Inventors
- 14
- Latest grant
- 20 Oct 2015
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 1 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Enhanced power factor correction for welding and cutting power supplies20 Oct 2015US 9,162,310 B2Illinois Tool Works Inc.
- Generator for arc welder with high power factor18 Aug 2009US 7,576,299 B2Selco S.r.l.
- Method of designing and manufacturing welding-type power supplies30 Mar 2004US 6,713,721 B2Illinois Tool Works Inc.
- D.C. power unit assembly including unitized single-phase D.C. power units24 Jul 1990US 4,943,904 AConrac Corporation
- Dynamic Power Limitation1 Mar 2018US 2018/0056428 A1
- Enhanced power factor correction for welding and cutting power supplies14 Jan 2010US 2010/0006551 A1Illinois Tool Works Inc.
- Power source for high current welding22 Nov 2007US 2007/0267393 A1Lincoln Global.Inc.
- Generator for arc welder with high power factor26 Oct 2006US 2006/0237408 A1Selco S.r.l.
- Method of designing and manufacturing welding-type power supplies20 Mar 2003US 2003/0052106 A1Illinois Tool Works Inc.
Most cited
By later US patents
- Method of designing and manufacturing welding-type power supplies20US 6,713,721 B2Illinois Tool Works Inc. · 2004
- Generator for arc welder with high power factor7US 7,576,299 B2Selco S.r.l. · 2009
- D.C. power unit assembly including unitized single-phase D.C. power units3US 4,943,904 AConrac Corporation · 1990
- Enhanced power factor correction for welding and cutting power supplies1US 9,162,310 B2Illinois Tool Works Inc. · 2015