G01N 27/333
Ion-selective electrodes or membranes
Official title: Ion-selective electrodes or membranes (glass electrodes G01N27/36)
G01N27/333 (Ion-selective electrodes or membranes) appears on 722 US grants and 676 published applications in this corpus.
Search patents in G01N- Granted patents
- 722
- Published applications
- 676
- Assignees
- 447
- Inventors
- 1,852
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 8 | 0 |
| 1978 | 6 | 0 |
| 1979 | 7 | 0 |
| 1980 | 16 | 0 |
| 1981 | 11 | 0 |
| 1982 | 6 | 0 |
| 1983 | 9 | 0 |
| 1984 | 8 | 0 |
| 1985 | 17 | 0 |
| 1986 | 12 | 0 |
| 1987 | 12 | 0 |
| 1988 | 12 | 0 |
| 1989 | 17 | 0 |
| 1990 | 14 | 0 |
| 1991 | 13 | 0 |
| 1992 | 15 | 0 |
| 1993 | 10 | 0 |
| 1994 | 14 | 0 |
| 1995 | 16 | 0 |
| 1996 | 11 | 0 |
| 1997 | 6 | 0 |
| 1998 | 7 | 0 |
| 1999 | 6 | 0 |
| 2000 | 6 | 0 |
| 2001 | 3 | 3 |
| 2002 | 7 | 9 |
| 2003 | 9 | 12 |
| 2004 | 8 | 6 |
| 2005 | 5 | 11 |
| 2006 | 5 | 9 |
| 2007 | 7 | 6 |
| 2008 | 4 | 14 |
| 2009 | 2 | 11 |
| 2010 | 5 | 19 |
| 2011 | 9 | 14 |
| 2012 | 8 | 17 |
| 2013 | 7 | 20 |
| 2014 | 19 | 24 |
| 2015 | 16 | 24 |
| 2016 | 18 | 27 |
| 2017 | 13 | 34 |
| 2018 | 32 | 29 |
| 2019 | 28 | 39 |
| 2020 | 24 | 57 |
| 2021 | 25 | 44 |
| 2022 | 43 | 50 |
| 2023 | 43 | 52 |
| 2024 | 37 | 58 |
| 2025 | 34 | 46 |
| 2026 | 51 | 41 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Electrochemical sensor having an alkaline earth-modified electrolyte formulation6 Oct 2026US 12,754,157 B2Hamilton Company
- Self-calibrated electrochemical sensors6 Oct 2026US 12,754,160 B2Virginia Commonwealth University
- Ion-selective electrodes with sensing membranes covalently attached to both an inert polymer substrate and conductive carbon contact29 Sep 2026US 12,748,068 B2Regents of the University of Minnesota
- Sulfide electrolytes and efficient methods for making the same22 Sep 2026US 12,744,240 B2The Florida State University Research Foundation, Inc.
- Non-enzymatic glucose-sensing device with nanoporous structure and conditioning of the nanoporous structure8 Sep 2026US 12,727,800 B2UXN Co., Ltd.
- Detection apparatus1 Oct 2026US 2026/0298862 A1Innolux Corporation
- Aluminum ion sensor and method to detect aluminum ion concentration1 Oct 2026US 2026/0298865 A1The American University in Cairo
- Potential measurement system for microfluidic channel24 Sep 2026US 2026/0287538 A1ProvaLabs, Inc.
- Selective electrode membrane with silica17 Sep 2026US 2026/0276578 A1Analog Devices International Unlimited Company
- Electrochemical process measurement arrangement17 Sep 2026US 2026/0276582 A1Hach Lange GmbH
Most cited
By later US patents
- Long-life membrane electrode for non-ionic species578US 4,813,424 AUniversity of New Mexico · 1989
- Ion sensor401US 5,133,856 ATerumo Kabushiki Kaisha · 1992
- Functional, photochemically active, and chemically asymmetric membranes by interfacial polymerization of derivatized multifunctional prepolymers370US 4,917,800 ABend Research, Inc. · 1990
- pH electrode340US 5,354,449 A1994
- Electrochemical measurement cell204US 4,900,424 AUnilever Patent Holdings B.V. · 1990