H01C 7/025
Perovskites
Official title: {Perovskites, e.g. titanates}
H01C7/025 (Perovskites) appears on 107 US grants and 89 published applications in this corpus.
Search patents in H01C- Granted patents
- 107
- Published applications
- 89
- Assignees
- 49
- Inventors
- 236
- Latest grant
- 14 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 3 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 5 | 0 |
| 2001 | 2 | 1 |
| 2002 | 6 | 4 |
| 2003 | 2 | 2 |
| 2004 | 2 | 4 |
| 2005 | 3 | 0 |
| 2006 | 2 | 2 |
| 2007 | 0 | 4 |
| 2008 | 2 | 7 |
| 2009 | 3 | 9 |
| 2010 | 8 | 8 |
| 2011 | 5 | 8 |
| 2012 | 6 | 5 |
| 2013 | 5 | 4 |
| 2014 | 4 | 4 |
| 2015 | 3 | 5 |
| 2016 | 4 | 3 |
| 2017 | 4 | 3 |
| 2018 | 1 | 0 |
| 2019 | 0 | 4 |
| 2020 | 2 | 1 |
| 2021 | 2 | 0 |
| 2022 | 0 | 1 |
| 2023 | 0 | 2 |
| 2024 | 1 | 4 |
| 2025 | 5 | 2 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for improving anti-reduction performance of PTC thermosensitive element14 Apr 2026US 12,603,199 B2Jiangsu New Linzhi Electronic Technology 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.
- Electrical component comprising an electrical resistor12 Aug 2025US 12,387,860 B2TDK Electronics Co., Ltd.
- Positive temperature coefficient ceramic thermistor element having strong reducing atmosphere resistance and preparation method therefor8 Jul 2025US 12,354,774 B2Jiangsu New Linzhi Electronic Technology 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.
- Ptc semiconductor ceramic composition, method for producing the semiconductor ceramic and heating device and use16 Jan 2025US 2025/0022637 A1Mahle International GmbH
- Method for improving anti-reduction performance of ptc thermosensitive element26 Dec 2024US 2024/0428967 A1Jiangsu New Linzhi Electronic Technology Co., Ltd.
Most cited
By later US patents
- Process for making ceramic resistor materials73US 3,983,077 ATexas Instruments Incorporated · 1976
- Self-regulating heating element55US 4,104,509 AU. S. Philips Corporation · 1978
- PTC thermistor composition and method of making the same30US 3,975,307 AMatsushita Electric Industrial Co., Ltd. · 1976
- Method of producing honeycomb structural bodies consisting of barium titanate series ceramics having a positive temperature coefficient of electric resistance27US 4,293,514 ANGK Insulators, Ltd. · 1981
- Ceramic semiconductors25US 4,101,454 ATexas Instruments Incorporated · 1978