H01C 7/022
Mainly consisting of non-metallic substances
Official title: {mainly consisting of non-metallic substances (H01C7/021 takes precedence)}
H01C7/022 (Mainly consisting of non-metallic substances) appears on 205 US grants and 133 published applications in this corpus.
Search patents in H01C- Granted patents
- 205
- Published applications
- 133
- Assignees
- 97
- Inventors
- 430
- Latest grant
- 14 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 12 | 0 |
| 1977 | 6 | 0 |
| 1978 | 7 | 0 |
| 1979 | 7 | 0 |
| 1980 | 10 | 0 |
| 1981 | 6 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 4 | 0 |
| 1985 | 3 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 3 | 0 |
| 1999 | 4 | 0 |
| 2000 | 8 | 0 |
| 2001 | 8 | 1 |
| 2002 | 8 | 8 |
| 2003 | 5 | 3 |
| 2004 | 3 | 5 |
| 2005 | 3 | 0 |
| 2006 | 3 | 2 |
| 2007 | 0 | 4 |
| 2008 | 2 | 7 |
| 2009 | 3 | 9 |
| 2010 | 9 | 9 |
| 2011 | 7 | 9 |
| 2012 | 6 | 7 |
| 2013 | 5 | 7 |
| 2014 | 6 | 5 |
| 2015 | 5 | 9 |
| 2016 | 5 | 5 |
| 2017 | 5 | 7 |
| 2018 | 6 | 2 |
| 2019 | 3 | 7 |
| 2020 | 5 | 4 |
| 2021 | 4 | 2 |
| 2022 | 0 | 2 |
| 2023 | 0 | 5 |
| 2024 | 2 | 8 |
| 2025 | 9 | 4 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method for improving anti-reduction performance of PTC thermosensitive element14 Apr 2026US 12,603,199 B2Jiangsu New Linzhi Electronic Technology Co., Ltd.
- Temperature sensor element and method for manufacturing temperature sensor element25 Nov 2025US 12,480,820 B2Shibaura Electronics Co., Ltd.
- PTC heater with reduced switch-on current23 Sep 2025US 12,424,357 B2TDK Electronics Co., Ltd.
- Method for confectioning resistors, resistor, and heating device16 Sep 2025US 12,417,866 B2BorgWarner Inc.
- Thermistor sintered body and temperature sensor element12 Aug 2025US 12,385,792 B2Shibaura Electronics Co., Ltd.
- Thermistor element and method for manufacturing the same26 Feb 2026US 2026/0058040 A1Mitsubishi Materials Corporation
- Self-limiting thick film positive temperature coefficient of resistivity (ptcr) resistor compositions26 Feb 2026US 2026/0059614 A1Data Coating Technologies Ltd.
- Ptc heater with reduced switch-on current4 Dec 2025US 2025/0374377 A1TDK Electronics Co., Ltd.
- Overvoltage protection device modules27 Mar 2025US 2025/0105618 A1Ripd IP Development Ltd
- Temperature sensor element and temperature sensor13 Mar 2025US 2025/0087391 A1Shibaura Electronics Co., Ltd.
Most cited
By later US patents
- Low thermal expansive, electroconductive composite ceramics99US 4,098,725 ATokyo Denki Kagaku Kogyo Kabushiki Kaisha · 1978
- Process for making ceramic resistor materials73US 3,983,077 ATexas Instruments Incorporated · 1976
- Electrically conductive sintered ceramics and ceramic heaters72US 4,555,358 AHitachi, Ltd. · 1985
- Electroconductive ceramics68US 4,528,121 AHitachi, Ltd. · 1985
- Self-regulating heating element60US 4,147,927 AU. S. Philips Corporation · 1979