H03K 3/42
By the use, as active elements, of opto-electronic devices, i.e. light-emitting and
Official title: by the use, as active elements, of opto-electronic devices, i.e. light-emitting and photoelectric devices electrically- or optically-coupled
H03K3/42 (By the use, as active elements, of opto-electronic devices, i.e. light-emitting and) appears on 73 US grants and 49 published applications in this corpus.
Search patents in H03K- Granted patents
- 73
- Published applications
- 49
- Assignees
- 77
- Inventors
- 156
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 2 | 0 |
| 2009 | 0 | 1 |
| 2010 | 1 | 0 |
| 2011 | 0 | 2 |
| 2012 | 1 | 0 |
| 2013 | 1 | 2 |
| 2014 | 1 | 0 |
| 2015 | 1 | 3 |
| 2016 | 1 | 3 |
| 2017 | 6 | 2 |
| 2018 | 1 | 3 |
| 2019 | 3 | 2 |
| 2020 | 3 | 5 |
| 2021 | 5 | 5 |
| 2022 | 4 | 4 |
| 2023 | 3 | 4 |
| 2024 | 4 | 6 |
| 2025 | 5 | 4 |
| 2026 | 5 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Wide band-gap photo relay18 Aug 2026US 12,712,536 B2Taiwan-Asia Semiconductor Corporation
- Systems and methods for high-voltage power integrated circuits7 Jul 2026US 12,676,601 B2Epirus, Inc.
- Synergistic pulse generation apparatus, device and method23 Jun 2026US 12,665,582 B2Hangzhou Wknife Medical Technology Co., Ltd
- Integrated opto-electronic oscillator chip as microwave and millimeter-wave frequency synthesizer10 Mar 2026US 12,573,984 B2Drexel University
- Pulse signal output circuit and flowmeter20 Jan 2026US 12,529,583 B2Goldcard Smart Group Co., Ltd.
- Clock generation for a photonic quantum computer24 Sep 2026US 2026/0287970 A1Psiquantum, Corp.
- Pulse signal multiplier for providing a secondary pulse signal from a primary pulse signal of a pulse signal generator6 Nov 2025US 2025/0343538 A1Knick Elektronische Messgeräte GmbH & Co. KG
- Photonic register circuit17 Jul 2025US 2025/0231345 A1Milkshake Technology Inc.
- Wide band-gap photo relay12 Jun 2025US 2025/0192761 A1Taiwan-Asia Semiconductor Corporation
- Pulse signal multiplier for providing a secondary pulse signal from a primary pulse signal of a pulse signal generator10 Apr 2025US 2025/0119126 A1Knick Elektronische Messgeräte GmbH & Co. KG
Most cited
By later US patents
- Optical-input latch-circuit cell array38US 5,281,805 ANippon Sheet Glass Co., Ltd. · 1994
- Clock generation for a photonic quantum computer to convert electrical pulses into a plurality of clock signals28US 10,379,420 B1Psiquantum, Corp. · 2019
- Optical bistable device27US 4,675,518 AOmron Tateisi Electronics Co. · 1987
- Signal transmission circuit having a latch-up function25US 5,256,882 AKabushiki Kaisha Toshiba · 1993
- Optoelectronic integrated circuit with optical gate device and phototransistor21US 5,014,096 AMatsushita Electric Industrial Co., Ltd. · 1991