G01P 3/36
Devices characterised by the use of optical means
Official title: Devices characterised by the use of optical means, e.g. using infrared, visible, or ultraviolet light (G01P3/68 takes precedence; gyrometers using the Sagnac effect, i.e. rotation-induced shifts between counter-rotating electromagnetic beams G01C19/64)
G01P3/36 (Devices characterised by the use of optical means) appears on 739 US grants and 606 published applications in this corpus.
Search patents in G01P- Granted patents
- 739
- Published applications
- 606
- Assignees
- 484
- Inventors
- 1,577
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 4 | 0 |
| 1978 | 7 | 0 |
| 1979 | 3 | 0 |
| 1980 | 8 | 0 |
| 1981 | 4 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 4 | 0 |
| 1985 | 7 | 0 |
| 1986 | 11 | 0 |
| 1987 | 5 | 0 |
| 1988 | 4 | 0 |
| 1989 | 11 | 0 |
| 1990 | 12 | 0 |
| 1991 | 10 | 0 |
| 1992 | 14 | 0 |
| 1993 | 15 | 0 |
| 1994 | 13 | 0 |
| 1995 | 12 | 0 |
| 1996 | 20 | 0 |
| 1997 | 18 | 0 |
| 1998 | 19 | 0 |
| 1999 | 7 | 0 |
| 2000 | 6 | 0 |
| 2001 | 8 | 2 |
| 2002 | 9 | 4 |
| 2003 | 6 | 9 |
| 2004 | 9 | 13 |
| 2005 | 6 | 16 |
| 2006 | 12 | 12 |
| 2007 | 12 | 10 |
| 2008 | 10 | 14 |
| 2009 | 6 | 13 |
| 2010 | 10 | 20 |
| 2011 | 8 | 21 |
| 2012 | 15 | 16 |
| 2013 | 19 | 21 |
| 2014 | 18 | 19 |
| 2015 | 22 | 37 |
| 2016 | 23 | 29 |
| 2017 | 27 | 43 |
| 2018 | 38 | 48 |
| 2019 | 49 | 39 |
| 2020 | 35 | 44 |
| 2021 | 27 | 37 |
| 2022 | 24 | 38 |
| 2023 | 35 | 30 |
| 2024 | 28 | 27 |
| 2025 | 43 | 23 |
| 2026 | 14 | 21 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Rotational speed estimation method for incremental encoder29 Sep 2026US 12,748,125 B2Artery Technology Co., Ltd.
- Method and apparatus for measuring rotational speed of satellite disk on MOCVD planetary susceptor15 Sep 2026US 12,736,556 B2Nanchang Angkun Co., Ltd.
- High resolution optical displacement measurement1 Sep 2026US 12,723,872 B2Palladyne Corp.
- 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.
- Control of Data Glasses on Board a Motor Vehicle1 Oct 2026US 2026/0299680 A1Bayerische Motoren Werke Aktiengesellschaft
- Systems and methods for detecting an unbalanced load within a washing machine appliance20 Aug 2026US 2026/0242997 A1Haier US Appliance Solutions, Inc.
- Liquid-gas phase-change launching device, and hypervelocity penetration test device and method20 Aug 2026US 2026/0243641 A1Central South University
- Vehicle speed estimation method6 Aug 2026US 2026/0227425 A1Toyota Jidosha Kabushiki Kaisha
- Object size and distance determination using image processing9 Jul 2026US 2026/0195910 A1GM Global Technology Operations LLC
Most cited
By later US patents
- Electro-optical range finding and speed detection system507US 5,642,299 A1997
- Vehicle monitoring system483US 5,809,161 ACommonwealth Scientific and Industrial Research Organisation · 1998
- Vehicle speed monitoring system254US 5,734,337 A1998
- Method of measuring the movement of an input device185US 6,707,027 B2Koninklijke Philips Electronics N. V. · 2004
- Method of and apparatus for measurement of blood flow using coherent light148US 4,109,647 AThe United States of America as represented by the Secretary of the Department of Health, Education and Welfare · 1978