H01C 7/021
Formed with two or more layers
Official title: {formed with two or more layers}
H01C7/021 (Formed with two or more layers) appears on 224 US grants and 185 published applications in this corpus.
Search patents in H01C- Granted patents
- 224
- Published applications
- 185
- Assignees
- 110
- Inventors
- 483
- Latest grant
- 30 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 4 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 5 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 4 | 0 |
| 1989 | 3 | 0 |
| 1990 | 8 | 0 |
| 1991 | 1 | 0 |
| 1992 | 5 | 0 |
| 1993 | 6 | 0 |
| 1994 | 4 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 4 | 0 |
| 2000 | 4 | 0 |
| 2001 | 5 | 2 |
| 2002 | 5 | 6 |
| 2003 | 7 | 8 |
| 2004 | 4 | 8 |
| 2005 | 5 | 1 |
| 2006 | 3 | 4 |
| 2007 | 3 | 7 |
| 2008 | 2 | 2 |
| 2009 | 3 | 5 |
| 2010 | 6 | 7 |
| 2011 | 2 | 2 |
| 2012 | 4 | 3 |
| 2013 | 3 | 7 |
| 2014 | 3 | 13 |
| 2015 | 11 | 8 |
| 2016 | 7 | 11 |
| 2017 | 10 | 6 |
| 2018 | 12 | 7 |
| 2019 | 6 | 6 |
| 2020 | 7 | 7 |
| 2021 | 11 | 9 |
| 2022 | 8 | 14 |
| 2023 | 9 | 9 |
| 2024 | 7 | 15 |
| 2025 | 13 | 13 |
| 2026 | 5 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Thermistor integrated with a bias resistor30 Jun 2026US 12,671,018 B2Texas Instruments Incorporated
- Electronic component9 Jun 2026US 12,651,683 B2Murata Manufacturing Co., Ltd.
- Surface-mounted polymer PCT overcurrent protection element having small package size14 Apr 2026US 12,603,198 B2Shanghai Wayon Electronics Co., Ltd.
- Method for improving anti-reduction performance of PTC thermosensitive element14 Apr 2026US 12,603,199 B2Jiangsu New Linzhi Electronic Technology Co., Ltd.
- Over-current protection device17 Feb 2026US 12,555,706 B2Polytronics Technology Corp.
- Circuit protection device5 Mar 2026US 2026/0066156 A1Fuzetec Technology Co., Ltd.
- Negative temperature coefficient thermistor5 Mar 2026US 2026/0066157 A1Murata Manufacturing Co., Ltd.
- Thermistor element and method for manufacturing the same26 Feb 2026US 2026/0058040 A1Mitsubishi Materials Corporation
- Secondary battery5 Feb 2026US 2026/0038908 A1SK On Co., Ltd.
- Protection device including ptc and thermal devices29 Jan 2026US 2026/0031257 A1Littelfuse, Inc.
Most cited
By later US patents
- Polymer fuse and filter apparatus103US 6,806,806 B2X2Y Attenuators, LLC · 2004
- Platinum film resistor device85US 4,129,848 ARaytheon Company · 1978
- Polymer fuse and filter apparatus82US 6,157,528 AX2Y Attenuators, LLC · 2000
- Polymer fuse and filter apparatus74US 6,388,856 B1X2Y Attenuators, LLC · 2002
- Polymer fuse and filter apparatus73US 6,282,074 B1X2Y Attenuators, LLC · 2001