G01N 2021/451
For determining the optical absorption
Official title: {for determining the optical absorption}
G01N2021/451 (For determining the optical absorption) appears on 43 US grants and 46 published applications in this corpus.
Search patents in G01N- Granted patents
- 43
- Published applications
- 46
- Assignees
- 48
- Inventors
- 122
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 2 |
| 2009 | 1 | 0 |
| 2010 | 1 | 1 |
| 2011 | 0 | 1 |
| 2012 | 2 | 2 |
| 2013 | 2 | 2 |
| 2014 | 1 | 0 |
| 2015 | 2 | 0 |
| 2016 | 0 | 1 |
| 2017 | 0 | 2 |
| 2018 | 1 | 1 |
| 2019 | 2 | 4 |
| 2020 | 4 | 4 |
| 2021 | 3 | 6 |
| 2022 | 2 | 3 |
| 2023 | 3 | 7 |
| 2024 | 5 | 4 |
| 2025 | 5 | 4 |
| 2026 | 4 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Measuring arrangements and methods for the detection of trace gases in a sample gas25 Aug 2026US 12,716,836 B2Endress+Hauser Group Services AG
- Self-mixing interferometry for absorption or color detection and application in lateral flow testing24 Mar 2026US 12,584,914 B2ams-OSRAM AG
- Biochemical detection with ultra wideband coherent optical combs27 Jan 2026US 12,533,058 B2II-Vi Delaware, Inc.
- Prognosis method for blood disorders6 Jan 2026US 12,517,043 B2Centre Hospitalier Regional Universitaire De Tours
- Fabry perot interferometry for measuring cell viability9 Dec 2025US 12,492,994 B2Nirrin Technologies, Inc.
- Quantum absorption spectroscopy method and quantum absorption spectroscopy system1 Oct 2026US 2026/0298819 A1Kyoto University
- Measuring arrangements and methods for the detection of trace gases in a sample gas26 Jun 2025US 2025/0208038 A1Endress+Hauser Group Services AG
- Device for measuring the refractive index of a fluid19 Jun 2025US 2025/0198921 A1Commissariat A L' Energie Atomique Et Aux Energies Alternatives
- Interferometric photonic sensor3 Apr 2025US 2025/0110379 A1
- Biochemical detection with ultra wideband coherent optical combs16 Jan 2025US 2025/0017498 A1II-Vi Delaware, Inc.
Most cited
By later US patents
- Method and apparatus for imaging a physical parameter in turbid media using diffuse waves52US 5,203,339 AThe Government of the United States of America as represented by the Secretary of the Department of Health and Human Services · 1993
- Method and apparatus for measuring spectral absorption in an opaque specimen and method and apparatus for measuring the microscopic absorption distribution43US 5,345,306 AResearch Development Corporation of Japan · 1994
- Detecting a radiation signal21US 5,292,483 ABeckman Instruments, Inc. · 1994
- Tuning optical cavities20US 7,633,629 B2Palo Alto Research Center Incorporated · 2009
- Calorimetric fiber optic chemical sensor15US 5,157,457 AThe Texas A&M University System · 1992