G01D 5/2457
Incremental encoders having reference marks
Official title: {Incremental encoders having reference marks}
G01D5/2457 (Incremental encoders having reference marks) appears on 324 US grants and 221 published applications in this corpus.
Search patents in G01D- Granted patents
- 324
- Published applications
- 221
- Assignees
- 181
- Inventors
- 638
- Latest grant
- 15 Jul 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 3 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 7 | 0 |
| 1985 | 5 | 0 |
| 1986 | 6 | 0 |
| 1987 | 7 | 0 |
| 1988 | 10 | 0 |
| 1989 | 6 | 0 |
| 1990 | 5 | 0 |
| 1991 | 8 | 0 |
| 1992 | 7 | 0 |
| 1993 | 5 | 0 |
| 1994 | 4 | 0 |
| 1995 | 3 | 0 |
| 1996 | 6 | 0 |
| 1997 | 9 | 0 |
| 1998 | 2 | 0 |
| 1999 | 12 | 0 |
| 2000 | 12 | 0 |
| 2001 | 8 | 3 |
| 2002 | 14 | 9 |
| 2003 | 8 | 7 |
| 2004 | 5 | 12 |
| 2005 | 10 | 13 |
| 2006 | 10 | 9 |
| 2007 | 4 | 13 |
| 2008 | 16 | 15 |
| 2009 | 4 | 11 |
| 2010 | 12 | 10 |
| 2011 | 8 | 6 |
| 2012 | 7 | 5 |
| 2013 | 8 | 18 |
| 2014 | 8 | 6 |
| 2015 | 6 | 7 |
| 2016 | 7 | 10 |
| 2017 | 10 | 5 |
| 2018 | 1 | 13 |
| 2019 | 8 | 7 |
| 2020 | 7 | 7 |
| 2021 | 7 | 10 |
| 2022 | 10 | 9 |
| 2023 | 4 | 8 |
| 2024 | 11 | 3 |
| 2025 | 2 | 4 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Encoder apparatus15 Jul 2025US 12,359,941 B2Renishaw PLC
- System and method for tracking a moving element in a conveyor system15 Apr 2025US 12,275,598 B2
- Optical encoder with alignment photodiodes at two sides of detection photodiodes31 Dec 2024US 12,181,315 B2Pixart Imaging Inc.
- Rotation angle detection apparatus26 Nov 2024US 12,152,877 B2Denso Corporation
- Estimation of rotor operational characteristics for a wind turbine10 Sep 2024US 12,088,226 B2Siemens Gamesa Renewable Energy A/S
- Rotational-position sensor unit, human-powered vehicle controller, and human-powered vehicle system13 Aug 2026US 2026/0233806 A1Shimano Inc.
- Rotational position detection device for stepping motor20 Nov 2025US 2025/0354835 A1Denso Corporation
- Shifting Device and Bicycle31 Jul 2025US 2025/0242889 A1MA Micro Limited
- Engine signal generator10 Jul 2025US 2025/0223932 A1Mahle International GmbH
- Optical position-measuring device6 Feb 2025US 2025/0044130 A1Johannes Heidenhain GmbH
Most cited
By later US patents
- Encoder for measuring the absolute position of moving elements209US 4,901,073 AThe Regent of the University of California · 1990
- Magnetic rotary encoder for detection of incremental angular displacement79US 4,319,188 ANippon Electric Co., Ltd. · 1982
- Encoder for measuring both incremental and absolute positions of moving elements64US 4,914,437 AThe Regents of the University of California · 1990
- System and method for sensing the angular position of a rotatable member64US 6,640,451 B1Visteon Global Technologies, Inc. · 2003
- Single channel encoder system53US 4,789,874 AHewlett-Packard Company · 1988