G01N 2021/4709
Backscatter
Official title: {Backscatter}
G01N2021/4709 (Backscatter) appears on 326 US grants and 334 published applications in this corpus.
Search patents in G01N- Granted patents
- 326
- Published applications
- 334
- Assignees
- 298
- Inventors
- 814
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 2 | 0 |
| 1985 | 4 | 0 |
| 1986 | 0 | 0 |
| 1987 | 3 | 0 |
| 1988 | 4 | 0 |
| 1989 | 7 | 0 |
| 1990 | 5 | 0 |
| 1991 | 8 | 0 |
| 1992 | 8 | 0 |
| 1993 | 5 | 0 |
| 1994 | 3 | 0 |
| 1995 | 5 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 3 | 2 |
| 2003 | 1 | 0 |
| 2004 | 3 | 6 |
| 2005 | 4 | 5 |
| 2006 | 3 | 4 |
| 2007 | 4 | 14 |
| 2008 | 9 | 6 |
| 2009 | 7 | 19 |
| 2010 | 8 | 18 |
| 2011 | 16 | 16 |
| 2012 | 11 | 20 |
| 2013 | 12 | 16 |
| 2014 | 14 | 8 |
| 2015 | 10 | 15 |
| 2016 | 7 | 19 |
| 2017 | 18 | 20 |
| 2018 | 19 | 16 |
| 2019 | 20 | 19 |
| 2020 | 12 | 17 |
| 2021 | 15 | 19 |
| 2022 | 16 | 22 |
| 2023 | 14 | 14 |
| 2024 | 16 | 18 |
| 2025 | 14 | 8 |
| 2026 | 9 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Optical foreign matter inspection device1 Sep 2026US 12,723,991 B2Hitachi High-Tech Corporation
- Reference switch architectures for noncontact sensing of substances18 Aug 2026US 12,710,358 B2Apple Inc.
- Multispectral reflection imaging system21 Jul 2026US 12,687,490 B2Commissariat A L' Energie Atomique Et Aux Energies Alternatives
- Method for analysing an object comprising several superposed layers, by optical reflectance measurements7 Jul 2026US 12,674,750 B2Commissariat A L' Energie Atomique Et Aux Energies Alternatives
- Optical turbine engine blade damage detector16 Jun 2026US 12,656,268 B2Rtx Corporation
- Apparatus and system for identifying presence of a substance of interest, and method of using thereof1 Oct 2026US 2026/0298902 A1Get Wisp Ltd.
- Detector apparatus and method for operating a detector apparatus17 Sep 2026US 2026/0276514 A1
- Method and system for analysing ore27 Aug 2026US 2026/0251555 A1Anglo American Technical & Sustainability Services Ltd
- Interferometric microscopy20 Aug 2026US 2026/0243653 A1Holtra AB
- Method and device for interferometric microscopy20 Aug 2026US 2026/0243655 A1Holtra AB
Most cited
By later US patents
- Hematocrit and oxygen saturation blood analyzer277US 5,066,859 A1991
- Reflection type oximeter for applying light pulses to a body tissue to measure oxygen saturation240US 4,867,557 ASumitomo Electric Industries, Ltd. · 1989
- De-embedment of optical component characteristics and calibration of optical receivers using rayleigh backscatter197US 6,947,147 B2Agilent Technologies, Inc. · 2005
- Measurements of substances using two different propagation modes of light through a common optical path174US 6,903,820 B2Tomophase Corporation · 2005
- Optical coherence tomography with 3d coherence scanning150US 7,474,407 B2Applied Science Innovations, Inc. · 2009