G01D 5/34715
Scale reading or illumination devices
Official title: {Scale reading or illumination devices}
G01D5/34715 (Scale reading or illumination devices) appears on 664 US grants and 603 published applications in this corpus.
Search patents in G01D- Granted patents
- 664
- Published applications
- 603
- Assignees
- 283
- Inventors
- 1,113
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 4 | 0 |
| 1981 | 6 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 7 | 0 |
| 1986 | 6 | 0 |
| 1987 | 14 | 0 |
| 1988 | 5 | 0 |
| 1989 | 6 | 0 |
| 1990 | 9 | 0 |
| 1991 | 5 | 0 |
| 1992 | 5 | 0 |
| 1993 | 10 | 0 |
| 1994 | 4 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 5 | 0 |
| 1998 | 12 | 0 |
| 1999 | 9 | 0 |
| 2000 | 11 | 0 |
| 2001 | 5 | 2 |
| 2002 | 12 | 17 |
| 2003 | 22 | 14 |
| 2004 | 14 | 29 |
| 2005 | 20 | 36 |
| 2006 | 29 | 22 |
| 2007 | 24 | 25 |
| 2008 | 20 | 19 |
| 2009 | 13 | 18 |
| 2010 | 11 | 23 |
| 2011 | 9 | 15 |
| 2012 | 11 | 20 |
| 2013 | 25 | 31 |
| 2014 | 24 | 22 |
| 2015 | 22 | 35 |
| 2016 | 24 | 33 |
| 2017 | 24 | 22 |
| 2018 | 27 | 35 |
| 2019 | 37 | 28 |
| 2020 | 29 | 32 |
| 2021 | 27 | 25 |
| 2022 | 19 | 17 |
| 2023 | 27 | 25 |
| 2024 | 25 | 26 |
| 2025 | 12 | 15 |
| 2026 | 12 | 17 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Optical encoder with comparator hysteresis changed with rotating speed and operating method thereof1 Sep 2026US 12,724,035 B2Pixart Imaging Inc.
- Optical module for encoder and reflection-type encoder21 Jul 2026US 12,687,413 B2Hamamatsu Photonics K.K.
- Rotary encoder7 Jul 2026US 12,674,689 B2Renishaw PLC
- Optical sensing assembly and encoder utilizing vernier effect and multi-stage position synthesis30 Jun 2026US 12,669,351 B2Delta Electronics, Inc.
- Optical sensing assembly and encoder23 Jun 2026US 12,663,297 B2Delta Electronics, Inc.
- Optical module for encoder and reflection-type encoder8 Oct 2026US 2026/0309518 A1Hamamatsu Photonics K.K.
- Position encoder apparatus10 Sep 2026US 2026/0266631 A1Renishaw PLC
- Positioning device10 Sep 2026US 2026/0267310 A1Toray Engineering Co., Ltd.
- Optical encoding system capable of compensating assembly tolerance3 Sep 2026US 2026/0259068 A1Pixart Imaging Inc.
- Rotary encoder apparatus6 Aug 2026US 2026/0227208 A1Renishaw PLC
Most cited
By later US patents
- Centrifugation pheresis system202US 4,834,890 ABaxter International Inc. · 1989
- Dynamic range control for optical encoders94US 10,066,970 B2Apple Inc. · 2018
- Encoder with a light emitting editing wheel83US 5,384,460 ASilitek Corporation · 1995
- Displacement measurement sensor head and system having measurement sub-beams comprising zeroth order and first order diffraction components83US 7,561,280 B2Agilent Technologies, Inc. · 2009
- Speckle-image-based optical position transducer having improved mounting and directional sensitivities69US 6,642,506 B1Mitutoyo Corporation · 2003