G01P 3/486
Delivered by photo-electric detectors
Official title: delivered by photo-electric detectors
G01P3/486 (Delivered by photo-electric detectors) appears on 274 US grants and 129 published applications in this corpus.
Search patents in G01P- Granted patents
- 274
- Published applications
- 129
- Assignees
- 209
- Inventors
- 574
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 5 | 0 |
| 1978 | 1 | 0 |
| 1979 | 6 | 0 |
| 1980 | 13 | 0 |
| 1981 | 4 | 0 |
| 1982 | 5 | 0 |
| 1983 | 6 | 0 |
| 1984 | 4 | 0 |
| 1985 | 5 | 0 |
| 1986 | 4 | 0 |
| 1987 | 7 | 0 |
| 1988 | 7 | 0 |
| 1989 | 11 | 0 |
| 1990 | 4 | 0 |
| 1991 | 7 | 0 |
| 1992 | 6 | 0 |
| 1993 | 12 | 0 |
| 1994 | 3 | 0 |
| 1995 | 3 | 0 |
| 1996 | 6 | 0 |
| 1997 | 7 | 0 |
| 1998 | 15 | 0 |
| 1999 | 8 | 0 |
| 2000 | 6 | 0 |
| 2001 | 4 | 1 |
| 2002 | 4 | 1 |
| 2003 | 4 | 6 |
| 2004 | 10 | 4 |
| 2005 | 1 | 6 |
| 2006 | 3 | 12 |
| 2007 | 5 | 1 |
| 2008 | 4 | 5 |
| 2009 | 2 | 4 |
| 2010 | 4 | 5 |
| 2011 | 2 | 7 |
| 2012 | 3 | 5 |
| 2013 | 7 | 1 |
| 2014 | 3 | 7 |
| 2015 | 4 | 7 |
| 2016 | 7 | 6 |
| 2017 | 2 | 7 |
| 2018 | 9 | 10 |
| 2019 | 5 | 7 |
| 2020 | 8 | 6 |
| 2021 | 6 | 4 |
| 2022 | 3 | 7 |
| 2023 | 2 | 5 |
| 2024 | 6 | 1 |
| 2025 | 3 | 2 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Optical encoder with comparator hysteresis changed with rotating speed and operating method thereof1 Sep 2026US 12,724,035 B2Pixart Imaging Inc.
- Fabry-perot based speed sensor18 Aug 2026US 12,710,440 B2Rosemount Aerospace Inc.
- Speed measurement using time-of-flight sensing and anti-collision protection using time-of-flight sensing25 Nov 2025US 12,479,293 B2STMicroelectronics (Grenoble 2) SAS
- Optical encoder with comparator hysteresis changed with rotating speed and operating method thereof21 Jan 2025US 12,203,956 B2Pixart Imaging Inc.
- Rotation sensor for a crown of an electronic watch7 Jan 2025US 12,189,347 B2Apple Inc.
- Torque measurement based on bearing contact angle controlled by gear force reaction13 Aug 2026US 2026/0235462 A1Pratt & Whitney Canada Corp.
- Rotating body with marking for rotation measurement2 Apr 2026US 2026/0092942 A1IHI Corporation
- Optical encoder with comparator hysteresis changed with rotating speed and operating method thereof20 Mar 2025US 2025/0093378 A1Pixart Imaging Inc.
- Encoder and attachment method20 Feb 2025US 2025/0060230 A1Panasonic Intellectual Property Management Co., Ltd.
- Optical encoder with comparator hysteresis changed with rotating speed and operating method thereof28 Mar 2024US 2024/0103032 A1Pixart Imaging Inc.
Most cited
By later US patents
- Medication infusion system having optical motion sensor to detect drive mechanism malfunction617US 5,097,122 APacesetter Infusion, Ltd. · 1992
- Speedometer for in-line skates150US 5,721,539 A1998
- Optical data collection apparatus and method used with moving members127US 4,724,317 ABaxter Travenol Laboratories, Inc. · 1988
- Encoder for providing calibrated measurement capability of rotation or linear movement of an object, label medium and an optical identification system120US 5,471,054 ANF. T&M. Systems. Inc. · 1995
- Rotation quantity measuring method and system117US 4,987,299 ARicoh Company, Ltd. · 1991