B44D 3/168
By electrically heating
Official title: {by electrically heating (air heaters using electric energy supply, the air being in direct contact with the heating medium, F24H3/0405)}
B44D3/168 (By electrically heating) appears on 25 US grants and 7 published applications in this corpus.
Search patents in B44D- Granted patents
- 25
- Published applications
- 7
- Assignees
- 16
- Inventors
- 32
- Latest grant
- 22 Nov 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 2 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 2 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 1 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 1 | 0 |
| 2014 | 1 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 1 |
| 2017 | 0 | 0 |
| 2018 | 1 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 1 | 0 |
| 2022 | 1 | 0 |
| 2023 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Paint removal unit22 Nov 2022US 11,504,996 B2Nallen Holdings, LLC
- Electrically powered stripping tool21 Sep 2021US 11,124,019 B1
- Device for applying heat radiation to a surface25 Dec 2018US 10,160,260 B2Speedheater System AB
- Paintscraper13 May 2014US 8,719,988 B2Krokoms Vägkrog Aktiebolag
- Device for providing heat radiation of a surface14 May 2013US 8,442,391 B2Speedheater System AB
- Paint removal unit16 Mar 2023US 2023/0082642 A1Nallen Holdings, LLC
- Paint removal unit1 Oct 2020US 2020/0307301 A1Nallen Holdings, LLC
- Device for applying heat radiation to a surface27 Oct 2016US 2016/0311248 A1Speedheater System AB
- Paintscraper14 Jan 2010US 2010/0005605 A1Krokoms Vagkrog AB
- Method and device for removing coatings on a metal structure24 Apr 2008US 2008/0092919 A1RPR Technologies AS
Most cited
By later US patents
- Hot air gun36US 4,629,864 ABlack & Decker Inc. · 1986
- Environmentally sound and safe apparatus for removing coatings34US 5,575,035 ANorthrop Grumman Corporation · 1996
- Hot air gun with air directing housing28US 4,683,370 AWagner Spray Tech Corporation · 1987
- Method and apparatus for removal of material utilizing near-blackbody radiator means26US 5,789,755 ANew Star Lasers, Inc. · 1998
- Electrically heated decal stripping tool24US 4,690,724 A1987