G01N 2021/157
Monitoring by optical means
Official title: {Monitoring by optical means}
G01N2021/157 (Monitoring by optical means) appears on 114 US grants and 132 published applications in this corpus.
Search patents in G01N- Granted patents
- 114
- Published applications
- 132
- Assignees
- 96
- Inventors
- 299
- Latest grant
- 14 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 3 | 0 |
| 2004 | 0 | 3 |
| 2005 | 1 | 4 |
| 2006 | 4 | 5 |
| 2007 | 4 | 5 |
| 2008 | 2 | 4 |
| 2009 | 1 | 2 |
| 2010 | 1 | 3 |
| 2011 | 2 | 1 |
| 2012 | 2 | 1 |
| 2013 | 2 | 5 |
| 2014 | 1 | 7 |
| 2015 | 6 | 2 |
| 2016 | 5 | 5 |
| 2017 | 3 | 5 |
| 2018 | 10 | 15 |
| 2019 | 8 | 8 |
| 2020 | 14 | 11 |
| 2021 | 6 | 14 |
| 2022 | 11 | 11 |
| 2023 | 10 | 6 |
| 2024 | 9 | 6 |
| 2025 | 3 | 4 |
| 2026 | 0 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Localized window contaminant detection14 Oct 2025US 12,445,594 B2Waymo LLC
- Evaluating assays with optical inhomogeneities19 Aug 2025US 12,392,709 B2Siemens Healthineers Nederland B.V.
- Window obscuration sensors for mobile gas and chemical imaging cameras29 Jul 2025US 12,372,459 B2Rebellion Photonics, Inc.
- Measurement apparatus and method10 Sep 2024US 12,085,413 B2Renishaw PLC
- Sensing arrangement for monitoring contamination of cover slide on laser processing head11 Jun 2024US 12,007,336 B2II-Vi Delaware, Inc.
- Contaminated optics detection for a thermal imager25 Jun 2026US 2026/0177505 A1Seek Thermal, Inc.
- Local gas path driven passive purge for optical probe23 Apr 2026US 2026/0110623 A1Rtx Corporation
- Metrology apparatus and method12 Feb 2026US 2026/0043730 A1Cymer, Inc.
- Localized Window Contaminant Detection15 Jan 2026US 2026/0019560 A1Waymo LLC
- Real-time cuvette monitoring8 Jan 2026US 2026/0009810 A1Beckman Coulter, Inc.
Most cited
By later US patents
- Window obscuration sensors for mobile gas and chemical imaging cameras40US 10,605,725 B2Rebellion Photonics, Inc. · 2020
- Particle monitor system and method29US 5,083,865 AAPPLIED Materials.Inc. · 1992
- Transmission detector for a window body, in particular the windshield of a motor vehicle, and a cleaning device for a viewing area of a window body29US 6,954,047 B2Robert Bosch GmbH · 2005
- Contamination monitoring and control techniques for use with an optical metrology instrument20US 7,342,235 B1MetroSol, Inc. · 2008
- Interchangeable tip-open cell fluorometer16US 7,154,603 B2Nalco Company · 2006