G01N 21/47
Scattering, i.e. diffuse reflection
Official title: Scattering, i.e. diffuse reflection (G01N21/25, G01N21/41 take precedence {G01N21/55 takes precedence})
G01N21/47 (Scattering, i.e. diffuse reflection) appears on 7,887 US grants and 7,634 published applications in this corpus.
Search patents in G01N- Granted patents
- 7,887
- Published applications
- 7,634
- Assignees
- 3,395
- Inventors
- 15,079
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 39 | 0 |
| 1977 | 34 | 0 |
| 1978 | 28 | 0 |
| 1979 | 21 | 0 |
| 1980 | 30 | 0 |
| 1981 | 22 | 0 |
| 1982 | 18 | 0 |
| 1983 | 28 | 0 |
| 1984 | 28 | 0 |
| 1985 | 52 | 0 |
| 1986 | 53 | 0 |
| 1987 | 92 | 0 |
| 1988 | 70 | 0 |
| 1989 | 88 | 0 |
| 1990 | 80 | 0 |
| 1991 | 96 | 0 |
| 1992 | 101 | 0 |
| 1993 | 69 | 0 |
| 1994 | 81 | 0 |
| 1995 | 76 | 0 |
| 1996 | 64 | 0 |
| 1997 | 68 | 0 |
| 1998 | 107 | 0 |
| 1999 | 99 | 0 |
| 2000 | 95 | 0 |
| 2001 | 87 | 40 |
| 2002 | 99 | 134 |
| 2003 | 152 | 182 |
| 2004 | 153 | 225 |
| 2005 | 143 | 226 |
| 2006 | 194 | 265 |
| 2007 | 188 | 298 |
| 2008 | 205 | 297 |
| 2009 | 226 | 295 |
| 2010 | 237 | 326 |
| 2011 | 219 | 320 |
| 2012 | 221 | 309 |
| 2013 | 257 | 332 |
| 2014 | 287 | 353 |
| 2015 | 293 | 411 |
| 2016 | 356 | 405 |
| 2017 | 344 | 384 |
| 2018 | 354 | 394 |
| 2019 | 440 | 394 |
| 2020 | 347 | 416 |
| 2021 | 352 | 389 |
| 2022 | 292 | 312 |
| 2023 | 247 | 303 |
| 2024 | 248 | 268 |
| 2025 | 258 | 191 |
| 2026 | 149 | 165 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G01N 21/49Within a body or fluid3,133
- G01N 21/4738Diffuse reflection1,840
- G01N 21/4795Spatially resolved investigating of object in scattering medium1,307
- G01N 2021/4704Angular selectiveIndexing code895
- G01N 21/4788Diffraction777
- G01N 21/4785Standardising light scatter apparatus255
- G01N 2021/4792Polarisation of scatter lightIndexing code205
- G01N 2021/4735Solid samplesIndexing code181
Recent patents
- Methods for compact multi-color flow cytometers having compact detection modules6 Oct 2026US 12,754,128 B2Cytek Biosciences, Inc.
- System, robot and method for measuring the color of an area of a sample or of a vehicle's part29 Sep 2026US 12,748,040 B2Fyla Laser, S. L.
- Aerosol sensor and an integrated optical component thereof29 Sep 2026US 12,748,055 B2Honeywell International Inc.
- Self-referencing spectral constraint-based spectral reconstruction method and apparatus, device, and medium22 Sep 2026US 12,742,679 B2National University of Defense Technology
- Method and system for optical characterization of patterned samples22 Sep 2026US 12,742,724 B2Nova Ltd.
- Nanosecond-scale photothermal dynamic imaging8 Oct 2026US 2026/0309619 A1Trustees of Boston University
- Spectroscopic based contaminant detection system8 Oct 2026US 2026/0309642 A1
- Metrology apparatus and metrology methods based on high harmonic generation from a diffractive structure1 Oct 2026US 2026/0298820 A1ASML Netherlands B. V.
- Dtof-based visibility measurement method, sensor, and vehicle1 Oct 2026US 2026/0298821 A1Autox Tech Pte. Ltd.
- Apparatus and system for identifying presence of a substance of interest, and method of using thereof1 Oct 2026US 2026/0298902 A1Get Wisp Ltd.
Most cited
By later US patents
- Method and apparatus using alternative site glucose determinations to calibrate and maintain noninvasive and implantable analyzers1,598US 6,998,247 B2Sensys Medical, Inc. · 2006
- Tissue interrogating device and methods1,518US 5,769,791 ASextant Medical Corporation · 1998
- Method and apparatus for optical imaging with means for controlling the longitudinal range of the sample1,199US 5,321,501 AMassachusetts Institute of Technology · 1994
- Methods and apparatus for forward-directed optical scanning instruments1,184US 6,485,413 B1The General Hospital Corporation · 2002
- Optical spectroscopy pathlength measurement system1,175US 6,640,116 B2Masimo Corporation · 2003