H05B 2203/019
Heaters using heating elements having a negative temperature coefficient
H05B2203/019 (Heaters using heating elements having a negative temperature coefficient) appears on 78 US grants and 107 published applications in this corpus.
Search patents in H05B- Granted patents
- 78
- Published applications
- 107
- Assignees
- 64
- Inventors
- 205
- Latest grant
- 24 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 1 |
| 2002 | 3 | 0 |
| 2003 | 0 | 2 |
| 2004 | 1 | 2 |
| 2005 | 3 | 4 |
| 2006 | 1 | 0 |
| 2007 | 3 | 1 |
| 2008 | 2 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 3 |
| 2012 | 1 | 1 |
| 2013 | 1 | 2 |
| 2014 | 0 | 3 |
| 2015 | 4 | 4 |
| 2016 | 4 | 1 |
| 2017 | 3 | 13 |
| 2018 | 0 | 1 |
| 2019 | 3 | 6 |
| 2020 | 6 | 13 |
| 2021 | 6 | 6 |
| 2022 | 7 | 9 |
| 2023 | 8 | 10 |
| 2024 | 8 | 10 |
| 2025 | 10 | 5 |
| 2026 | 1 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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- Mineral insulated cable, method of manufacturing a mineral insulated cable, and method and system for heating a substance20 Aug 2026US 2026/0245768 A1Shell USA, Inc.
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Most cited
By later US patents
- Self-regulating heater employing reactive components419US 4,849,611 ARaychem Corporation · 1989
- Respiratory system46US 9,119,933 B2Plastiflex Group · 2015
- Heating blankets and the like44US 6,310,332 B1Winterwarm B.V. · 2001
- Aerosol delivery device with radiant heating43US 10,206,429 B2RAI Strategic Holdings, Inc. · 2019
- Flexible heater device43US 7,285,748 B2Illinois Tool Works Inc. · 2007