G01D 5/32
With attenuation or whole or partial obturation of beams of light
Official title: with attenuation or whole or partial obturation of beams of light (G01D5/40 takes precedence {; mechanical adjustment G01D5/264})
G01D5/32 (With attenuation or whole or partial obturation of beams of light) appears on 5,855 US grants and 4,939 published applications in this corpus.
Search patents in G01D- Granted patents
- 5,855
- Published applications
- 4,939
- Assignees
- 2,129
- Inventors
- 9,209
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 27 | 0 |
| 1977 | 25 | 0 |
| 1978 | 36 | 0 |
| 1979 | 33 | 0 |
| 1980 | 35 | 0 |
| 1981 | 37 | 0 |
| 1982 | 31 | 0 |
| 1983 | 28 | 0 |
| 1984 | 36 | 0 |
| 1985 | 53 | 0 |
| 1986 | 54 | 0 |
| 1987 | 91 | 0 |
| 1988 | 82 | 0 |
| 1989 | 70 | 0 |
| 1990 | 94 | 0 |
| 1991 | 119 | 0 |
| 1992 | 78 | 0 |
| 1993 | 85 | 0 |
| 1994 | 64 | 0 |
| 1995 | 60 | 0 |
| 1996 | 87 | 0 |
| 1997 | 85 | 0 |
| 1998 | 94 | 0 |
| 1999 | 92 | 0 |
| 2000 | 91 | 0 |
| 2001 | 85 | 23 |
| 2002 | 96 | 93 |
| 2003 | 109 | 106 |
| 2004 | 116 | 152 |
| 2005 | 101 | 189 |
| 2006 | 151 | 175 |
| 2007 | 153 | 182 |
| 2008 | 149 | 189 |
| 2009 | 137 | 165 |
| 2010 | 128 | 170 |
| 2011 | 106 | 159 |
| 2012 | 97 | 171 |
| 2013 | 146 | 209 |
| 2014 | 178 | 194 |
| 2015 | 193 | 257 |
| 2016 | 222 | 238 |
| 2017 | 229 | 266 |
| 2018 | 232 | 261 |
| 2019 | 264 | 259 |
| 2020 | 270 | 260 |
| 2021 | 227 | 245 |
| 2022 | 202 | 216 |
| 2023 | 181 | 219 |
| 2024 | 191 | 215 |
| 2025 | 181 | 174 |
| 2026 | 124 | 152 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Reflection-type optical encoder scale including an inorganic layer stack pattern with specific reflectance6 Oct 2026US 12,754,044 B2Dai Nippon Printing Co.Ltd.
- Demodulation system for optical fiber Fabry-Perot sensor6 Oct 2026US 12,754,045 B2Beijing Bywave Sensing Technology Co., Ltd.
- Multispan optical fiber system and techniques for improved distributed acoustic sensing6 Oct 2026US 12,754,065 B2Subcom, LLC
- Rotational speed estimation method for incremental encoder29 Sep 2026US 12,748,125 B2Artery Technology Co., Ltd.
- Transducers including laser etched substrates29 Sep 2026US 12,751,228 B2Baker Hughes Oilfield Operations LLC
- Fiber-optical sensor system for data to facilitate, plan, localize, monitor, or confirm ablation procedures8 Oct 2026US 2026/0306158 A1
- System and computer implemented method for controlling a flexible device whilst inspecting or repairing a component8 Oct 2026US 2026/0307242 A1ROLLS-ROYCE plc
- Printing apparatus, control method, and storage medium8 Oct 2026US 2026/0307406 A1Canon Kabushiki Kaisha
- A method for error detection on an image sensor and an absolute position measuring system for a passenger transportation system8 Oct 2026US 2026/0307940 A1Inventio AG
- Optical module for encoder and reflection-type encoder8 Oct 2026US 2026/0309518 A1Hamamatsu Photonics K.K.
Most cited
By later US patents
- Insulin infusion pump626US 4,498,843 A1985
- Pulser with double-bearing position encoder for non-invasive physiological monitoring607US 9,891,079 B2Masimo Corporation · 2018
- Optical fiber bend sensor488US 6,389,187 B1Qinetiq Limited · 2002
- Fiber optic position and/or shape sensing based on rayleigh scatter344US 7,772,541 B2Luna Innnovations Incorporated · 2010
- Fiber optic sensor for precision 3-D position measurement324US 6,888,623 B2Dynamic Technology, Inc. · 2005