H03K 2217/941
Using an optical detector
Official title: using an optical detector
H03K2217/941 (Using an optical detector) appears on 262 US grants and 305 published applications in this corpus.
Search patents in H03K- Granted patents
- 262
- Published applications
- 305
- Assignees
- 190
- Inventors
- 608
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 4 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 1 |
| 2002 | 1 | 1 |
| 2003 | 2 | 0 |
| 2004 | 1 | 3 |
| 2005 | 1 | 12 |
| 2006 | 3 | 10 |
| 2007 | 6 | 6 |
| 2008 | 2 | 6 |
| 2009 | 6 | 5 |
| 2010 | 3 | 15 |
| 2011 | 6 | 15 |
| 2012 | 9 | 22 |
| 2013 | 18 | 15 |
| 2014 | 18 | 15 |
| 2015 | 16 | 23 |
| 2016 | 23 | 14 |
| 2017 | 13 | 17 |
| 2018 | 11 | 13 |
| 2019 | 17 | 16 |
| 2020 | 10 | 10 |
| 2021 | 12 | 15 |
| 2022 | 11 | 20 |
| 2023 | 13 | 25 |
| 2024 | 22 | 9 |
| 2025 | 9 | 12 |
| 2026 | 7 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- IR timing calibration for a key switch7 Jul 2026US 12,676,612 B2Logitech Europe S. A.
- Wearing detection techniques for wearable devices9 Jun 2026US 12,648,736 B2Oura Health Oy
- Push button switch2 Jun 2026US 12,646,665 B2OMRON Corporation
- Contactless actionable button19 May 2026US 12,631,733 B2STMicroelectronics (Grenoble 2) SAS
- Wearing detection techniques for wearable devices3 Feb 2026US 12,539,082 B2Oura Health Oy
- Sensor and detection method20 Aug 2026US 2026/0243875 A1OMRON Corporation
- Wearing detection techniques for wearable devices30 Jul 2026US 2026/0215733 A1Oura Health Oy
- Dispositivo di illuminazione e sistema di illuminazione comprendente tale dispositivo di illuminazione28 May 2026US 2026/0146733 A1L. & S. Italia S.P.A.
- Wearing detection techniques for wearable devices14 May 2026US 2026/0130628 A1Oura Health Oy
- User presence responsiveness in a playback device26 Feb 2026US 2026/0056583 A1Sonos, Inc.
Most cited
By later US patents
- Photoelectric input apparatus101US 4,267,443 ACarroll Manufacturing Corporation · 1981
- Water supply control apparatus80US 4,742,583 AToto Ltd. · 1988
- Proximity sensors with optical and electrical sensing capabilities60US 9,088,282 B2Apple Inc. · 2015
- Three-dimensional protective interlock apparatus57US 4,384,201 ACarroll Manufacturing Corporation · 1983
- Compact multi-direction proximity sensor device and method57US 8,575,537 B2Avago Technologies General IP (Singapore) Pte. Ltd. · 2013