G01N 2021/432
Comprising optical fibres
Official title: {comprising optical fibres}
G01N2021/432 (Comprising optical fibres) appears on 48 US grants and 28 published applications in this corpus.
Search patents in G01N- Granted patents
- 48
- Published applications
- 28
- Assignees
- 47
- Inventors
- 115
- Latest grant
- 17 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 4 | 0 |
| 1990 | 3 | 0 |
| 1991 | 6 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 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 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 2 |
| 2011 | 0 | 0 |
| 2012 | 1 | 2 |
| 2013 | 1 | 0 |
| 2014 | 1 | 2 |
| 2015 | 1 | 0 |
| 2016 | 3 | 1 |
| 2017 | 1 | 1 |
| 2018 | 1 | 3 |
| 2019 | 2 | 3 |
| 2020 | 2 | 4 |
| 2021 | 3 | 2 |
| 2022 | 2 | 2 |
| 2023 | 2 | 3 |
| 2024 | 0 | 0 |
| 2025 | 2 | 1 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Apparatuses, systems, and methods for sample testing17 Feb 2026US 12,553,885 B2Hand Held Products, Inc.
- Apparatuses, systems, and methods for sample testing20 Jan 2026US 12,529,696 B2Hand Held Products, Inc.
- Dextrose concentration sensor for a peritoneal dialysis system17 Jun 2025US 12,329,892 B2Bellco SRL
- Immersed lens downhole refractometer1 Apr 2025US 12,264,581 B2Baker Hughes Oilfield Operations LLC
- Docking station with waveguide enhanced analyte detection strip5 Sep 2023US 11,747,283 B2Strike Photonics, Inc.
- Fiber-optic seawater salinity sensor system and preparation method thereof30 Apr 2026US 2026/0118261 A1Tianjin University
- System and method for simultaneously measuring refractive index and turbidity5 Jun 2025US 2025/0179410 A1
- Immersed lens downhole refractometer5 Oct 2023US 2023/0313679 A1Baker Hughes Oilfield Operations LLC
- Fiber optic measurement device8 Jun 2023US 2023/0175970 A1Indian Institute of Technology Madras (Iit Madras)
- Apparatuses, systems, and methods for sample testing18 May 2023US 2023/0152305 A1Hand Held Products, Inc.
Most cited
By later US patents
- Fiber optic sensor and methods and apparatus relating thereto95US 5,359,681 AUniversity of Washington · 1994
- Multi-probe system for measuring bubble characteristics gas hold-up, liquid hold-up and solid hold-up in a three-phase fluidized bed75US 4,659,218 ACanadian Patents and Development Limited · 1987
- Fiber optic sensor and methods and apparatus relating thereto55US 5,647,030 AUniversity of Washington · 1997
- Fiber optic refractive index sensor using metal cladding41US 5,026,139 AFiberChem Inc. · 1991
- Planar and other waveguide refractive index sensors using metal cladding40US 5,165,005 AFiberChem Inc. · 1992