H03K 19/21
Exclusive-or circuits, i.e. giving output if input signal exists at only one
Official title: EXCLUSIVE-OR circuits, i.e. giving output if input signal exists at only one input; COINCIDENCE circuits, i.e. giving output only if all input signals are identical
H03K19/21 (Exclusive-or circuits, i.e. giving output if input signal exists at only one) appears on 992 US grants and 802 published applications in this corpus.
Search patents in H03K- Granted patents
- 992
- Published applications
- 802
- Assignees
- 438
- Inventors
- 1,894
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 5 | 0 |
| 1978 | 3 | 0 |
| 1979 | 5 | 0 |
| 1980 | 5 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 3 | 0 |
| 1984 | 6 | 0 |
| 1985 | 6 | 0 |
| 1986 | 12 | 0 |
| 1987 | 8 | 0 |
| 1988 | 10 | 0 |
| 1989 | 6 | 0 |
| 1990 | 5 | 0 |
| 1991 | 9 | 0 |
| 1992 | 5 | 0 |
| 1993 | 7 | 0 |
| 1994 | 11 | 0 |
| 1995 | 11 | 0 |
| 1996 | 13 | 0 |
| 1997 | 11 | 0 |
| 1998 | 13 | 0 |
| 1999 | 16 | 0 |
| 2000 | 17 | 0 |
| 2001 | 18 | 2 |
| 2002 | 7 | 5 |
| 2003 | 5 | 5 |
| 2004 | 7 | 6 |
| 2005 | 8 | 12 |
| 2006 | 11 | 10 |
| 2007 | 11 | 7 |
| 2008 | 8 | 3 |
| 2009 | 6 | 6 |
| 2010 | 3 | 11 |
| 2011 | 5 | 4 |
| 2012 | 7 | 5 |
| 2013 | 11 | 12 |
| 2014 | 8 | 7 |
| 2015 | 9 | 13 |
| 2016 | 26 | 23 |
| 2017 | 31 | 59 |
| 2018 | 54 | 63 |
| 2019 | 87 | 77 |
| 2020 | 77 | 85 |
| 2021 | 80 | 74 |
| 2022 | 76 | 85 |
| 2023 | 89 | 67 |
| 2024 | 61 | 60 |
| 2025 | 57 | 52 |
| 2026 | 37 | 49 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- MOSFET and memory cell having improved drain current through back bias application6 Oct 2026US 12,757,460 B2Zeno Semiconductor, Inc.
- Class d amplifier and related chip and electronic apparatus29 Sep 2026US 12,750,018 B2Shenzhen Goodix Technology Co., Ltd.
- Power stage providing higher magnitude current in a switching converter22 Sep 2026US 12,744,461 B2Ningbo Aura Semiconductor Co., Limited
- Image processing device and image processing system using look-up table with exclusive or operation applied15 Sep 2026US 12,738,192 B2Samsung Electronics Co., Ltd.
- Reconfigurable compute memory having selection logic to control compute operations8 Sep 2026US 12,731,636 B2Numem Inc.
- Computation in memory for anneal processing using bitwise capacitive coupling8 Oct 2026US 2026/0311023 A1Taiwan Semiconductor Manufacturing Company.Ltd
- Multi-paths amplifier circuit1 Oct 2026US 2026/0303042 A1STMicroelectronics International N. V.
- Systems and methods for duty-cycle and phase error detector (dped) with chopping cancellation technique1 Oct 2026US 2026/0303079 A1Taiwan Semiconductor Manfuacturing Company, Ltd.
- Methods and apparatus for reducing leakage currents in cmos1 Oct 2026US 2026/0303085 A1QUALCOMM Incorporated
- Logic drive using standard commodity programmable logic ic chips comprising non-volatile random access memory cells1 Oct 2026US 2026/0303097 A1iCometrue Company Ltd.
Most cited
By later US patents
- Method and apparatus for designing circuits for wave pipelining258US 5,796,624 AThe Research Foundation of State University of New York · 1998
- Exclusive or/nor circuit253US 6,356,112 B1Translogic Technology, Inc. · 2002
- Complementary channel type MOS transistor exclusive OR/NOR logic gate circuit212US 4,417,161 AMatsushita Electric Industrial Co., Ltd. · 1983
- Apparatus and method for providing a logical exclusive OR/exclusive NOR function204US 4,424,460 ARockwell International Corporation · 1984
- Exclusive-or gate for use in delay using transmission gate circuitry203US 5,973,507 AFujitsu Limited · 1999