F02P 3/04
Layout of circuits
F02P3/04 (Layout of circuits) appears on 1,124 US grants and 689 published applications in this corpus.
Search patents in F02P- Granted patents
- 1,124
- Published applications
- 689
- Assignees
- 271
- Inventors
- 1,377
- Latest grant
- 17 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 14 | 0 |
| 1977 | 22 | 0 |
| 1978 | 40 | 0 |
| 1979 | 20 | 0 |
| 1980 | 23 | 0 |
| 1981 | 30 | 0 |
| 1982 | 22 | 0 |
| 1983 | 25 | 0 |
| 1984 | 26 | 0 |
| 1985 | 15 | 0 |
| 1986 | 8 | 0 |
| 1987 | 10 | 0 |
| 1988 | 13 | 0 |
| 1989 | 12 | 0 |
| 1990 | 25 | 0 |
| 1991 | 24 | 0 |
| 1992 | 15 | 0 |
| 1993 | 12 | 0 |
| 1994 | 13 | 0 |
| 1995 | 15 | 0 |
| 1996 | 18 | 0 |
| 1997 | 16 | 0 |
| 1998 | 9 | 0 |
| 1999 | 9 | 0 |
| 2000 | 21 | 0 |
| 2001 | 18 | 2 |
| 2002 | 15 | 18 |
| 2003 | 19 | 25 |
| 2004 | 34 | 35 |
| 2005 | 20 | 23 |
| 2006 | 28 | 20 |
| 2007 | 11 | 9 |
| 2008 | 15 | 20 |
| 2009 | 6 | 15 |
| 2010 | 15 | 15 |
| 2011 | 9 | 13 |
| 2012 | 8 | 21 |
| 2013 | 13 | 28 |
| 2014 | 11 | 35 |
| 2015 | 29 | 34 |
| 2016 | 44 | 59 |
| 2017 | 51 | 59 |
| 2018 | 61 | 56 |
| 2019 | 53 | 58 |
| 2020 | 54 | 33 |
| 2021 | 53 | 41 |
| 2022 | 40 | 33 |
| 2023 | 30 | 17 |
| 2024 | 21 | 7 |
| 2025 | 7 | 7 |
| 2026 | 2 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Electrically assisted pre-chamber ignition system17 Mar 2026US 12,577,902 B1Saudi Arabian Oil Company
- Adaptive spark energy control10 Feb 2026US 12,546,279 B2Altronic, Inc.
- Ignition device16 Sep 2025US 12,416,281 B2Diamond&Zebra Electric Mfg. Co., Ltd.
- Method and apparatus to control an ignition system16 Sep 2025US 12,416,282 B2BorgWarner Luxembourg Automotive Systems SA
- Electronic ignition system for a generator engine1 Jul 2025US 12,345,226 B2Champion Power Equipment, Inc.
- System and method for monitoring by ion current the combustion in an internal combustion engine8 Oct 2026US 2026/0309113 A1Ferrari S.P. A.
- Preignition detection for hydrogen combustion engines24 Sep 2026US 2026/0286925 A1Cummins Inc.
- Ignition method10 Sep 2026US 2026/0266254 A1Save the Planet Co., Ltd.
- Load control device, igniter, engine ignition device, and vehicle16 Apr 2026US 2026/0104027 A1Rohm Co., Ltd.
- Electrically assisted pre-chamber ignition system19 Mar 2026US 2026/0078694 A1Aramco Services Company
Most cited
By later US patents
- Noise blanker circuit for use with electronic ignition systems or the like224US 4,347,827 AMotorola, Inc. · 1982
- Exhaust gas control using a spark plug ionization signal198US 6,980,903 B2Visteon Global Technologies, Inc. · 2005
- Compensation circuit for an automotive ignition sensing system165US 6,392,315 B1Delphi Technologies, Inc. · 2002
- Engine control unit63US 5,598,825 ATranscom Gas Technologies Pty Ltd. · 1997
- Conversion system with electronic controller for utilization of gaseous fuels in spark ignition engines59US 6,145,494 AAlternative Fuel Systems, Inc. · 2000