G01N 21/4738
Diffuse reflection
Official title: {Diffuse reflection (precedence is given to G01N21/55 - G01N21/57 if specular component is taken into consideration), e.g. also for testing fluids, fibrous materials}
G01N21/4738 (Diffuse reflection) appears on 1,840 US grants and 1,671 published applications in this corpus.
Search patents in G01N- Granted patents
- 1,840
- Published applications
- 1,671
- Assignees
- 1,113
- Inventors
- 4,114
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 8 | 0 |
| 1978 | 9 | 0 |
| 1979 | 2 | 0 |
| 1980 | 4 | 0 |
| 1981 | 6 | 0 |
| 1982 | 5 | 0 |
| 1983 | 4 | 0 |
| 1984 | 7 | 0 |
| 1985 | 17 | 0 |
| 1986 | 23 | 0 |
| 1987 | 28 | 0 |
| 1988 | 24 | 0 |
| 1989 | 38 | 0 |
| 1990 | 33 | 0 |
| 1991 | 36 | 0 |
| 1992 | 36 | 0 |
| 1993 | 34 | 0 |
| 1994 | 30 | 0 |
| 1995 | 20 | 0 |
| 1996 | 18 | 0 |
| 1997 | 19 | 0 |
| 1998 | 22 | 0 |
| 1999 | 23 | 0 |
| 2000 | 26 | 0 |
| 2001 | 25 | 13 |
| 2002 | 27 | 28 |
| 2003 | 33 | 36 |
| 2004 | 20 | 57 |
| 2005 | 42 | 49 |
| 2006 | 47 | 70 |
| 2007 | 53 | 60 |
| 2008 | 46 | 70 |
| 2009 | 43 | 66 |
| 2010 | 52 | 60 |
| 2011 | 46 | 65 |
| 2012 | 50 | 52 |
| 2013 | 50 | 63 |
| 2014 | 42 | 62 |
| 2015 | 50 | 95 |
| 2016 | 62 | 97 |
| 2017 | 78 | 83 |
| 2018 | 88 | 86 |
| 2019 | 88 | 75 |
| 2020 | 76 | 73 |
| 2021 | 64 | 77 |
| 2022 | 57 | 81 |
| 2023 | 46 | 76 |
| 2024 | 66 | 79 |
| 2025 | 68 | 57 |
| 2026 | 40 | 41 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Optical measurement device and optical measurement method1 Sep 2026US 12,723,975 B2Hamamatsu Photonics K.K.
- Biological information measurement device, biological information measurement method, and computer-readable recording medium25 Aug 2026US 12,716,886 B2Furukawa Electric Co., Ltd.
- Substrate processing apparatus, substrate processing method, method of manufacturing semiconductor device and non-transitory computer-readable recording medium capable of determining presence or absence of substrate25 Aug 2026US 12,721,100 B2Kokusai Electric Corporation
- Three-dimensional sample scanning system18 Aug 2026US 12,708,897 B2Stilla Technologies
- Dual UV-Vis reflectance absorbance and photoluminescence modules18 Aug 2026US 12,708,899 B2North Carolina State University
- Spectroscopic based contaminant detection system8 Oct 2026US 2026/0309642 A1
- Method and device for signal collection17 Sep 2026US 2026/0276543 A1Thermo Fisher Scientific (Shanghai) Instruments Co., Ltd.
- Methods and Systems for Detecting Weather Conditions using Vehicle Onboard Sensors3 Sep 2026US 2026/0259347 A1Waymo LLC
- Defect Inspecting Device, and Defect Inspecting Method20 Aug 2026US 2026/0243695 A1Hitachi High-Tech Corporation
- Method to measure turbidity and total suspended solids and turbidity sensor system thereof13 Aug 2026US 2026/0235505 A1Haber Inc.
Most cited
By later US patents
- Reagent test strip and apparatus for determination of blood glucose896US 5,304,468 ALifeScan, Inc. · 1994
- Automated initiation of timing of reflectance readings604US 5,049,487 ALifeScan, Inc. · 1991
- Method and apparatus for coupling a sample probe with a sample site603US 8,718,738 B2GLT Acquisition Corp. · 2014
- Near infrared spectroscopy device with reusable portion599US 7,706,853 B2Terumo Cardiovascular Systems Corporation · 2010
- Fiber optic illumination and detection patterns, shapes, and locations for use in spectroscopic analysis549US 6,411,373 B1Instrumentation Metrics, Inc. · 2002