A21B 1/22
By electric radiators
Official title: by electric radiators (A21B2/00 takes precedence)
A21B1/22 (By electric radiators) appears on 40 US grants and 52 published applications in this corpus.
Search patents in A21B- Granted patents
- 40
- Published applications
- 52
- Assignees
- 39
- Inventors
- 99
- Latest grant
- 9 Jun 2026
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 | 3 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 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 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 2 |
| 2006 | 1 | 0 |
| 2007 | 1 | 1 |
| 2008 | 0 | 3 |
| 2009 | 0 | 3 |
| 2010 | 1 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 3 |
| 2013 | 1 | 2 |
| 2014 | 3 | 2 |
| 2015 | 2 | 3 |
| 2016 | 3 | 2 |
| 2017 | 0 | 3 |
| 2018 | 3 | 5 |
| 2019 | 1 | 6 |
| 2020 | 3 | 3 |
| 2021 | 4 | 4 |
| 2022 | 3 | 1 |
| 2023 | 3 | 1 |
| 2024 | 0 | 1 |
| 2025 | 2 | 3 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Appliance to cook pizza9 Jun 2026US 12,648,575 B2Breville Pty Limited
- Cooking appliance9 Dec 2025US 12,492,823 B2Breville Pty Limited
- Power modulator for infrared conveyor oven1 Apr 2025US 12,262,718 B2The Middleby Corporation
- Power modulator for infrared conveyor oven3 Oct 2023US 11,771,096 B2The Middleby Corporation
- Heat distribution member and vents for toaster oven12 Sep 2023US 11,751,721 B2Spectrum Brands, Inc.
- A method of operating a baking oven and baking oven8 Oct 2026US 2026/0305621 A1E. G. O. Elektro-Geratebau GmbH
- Appliance to cook pizza17 Sep 2026US 2026/0271943 A1Breville Pty Limited
- Tunnel oven heating zone24 Jul 2025US 2025/0234868 A1Readling Bakery Systems, Inc.
- Control methods for infrared conveyor ovens24 Jul 2025US 2025/0234869 A1The Middleby Corporation
- Power modulator for infrared conveyor oven19 Jun 2025US 2025/0194608 A1The Middleby Corporation
Most cited
By later US patents