G01N 27/301
Reference electrodes
Official title: {Reference electrodes}
G01N27/301 (Reference electrodes) appears on 436 US grants and 546 published applications in this corpus.
Search patents in G01N- Granted patents
- 436
- Published applications
- 546
- Assignees
- 336
- Inventors
- 1,334
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 7 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 5 | 0 |
| 1990 | 9 | 0 |
| 1991 | 6 | 0 |
| 1992 | 3 | 0 |
| 1993 | 6 | 0 |
| 1994 | 4 | 0 |
| 1995 | 7 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 1 |
| 2002 | 3 | 4 |
| 2003 | 6 | 5 |
| 2004 | 3 | 5 |
| 2005 | 2 | 4 |
| 2006 | 1 | 4 |
| 2007 | 3 | 4 |
| 2008 | 5 | 6 |
| 2009 | 3 | 9 |
| 2010 | 4 | 7 |
| 2011 | 3 | 6 |
| 2012 | 9 | 12 |
| 2013 | 7 | 11 |
| 2014 | 10 | 14 |
| 2015 | 11 | 17 |
| 2016 | 12 | 20 |
| 2017 | 7 | 39 |
| 2018 | 22 | 36 |
| 2019 | 26 | 42 |
| 2020 | 27 | 42 |
| 2021 | 30 | 34 |
| 2022 | 34 | 52 |
| 2023 | 31 | 42 |
| 2024 | 27 | 51 |
| 2025 | 38 | 34 |
| 2026 | 38 | 45 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Electrochemical sensor having an alkaline earth-modified electrolyte formulation6 Oct 2026US 12,754,157 B2Hamilton Company
- Sample measurement device, sample measurement method, and sample measurement program6 Oct 2026US 12,754,159 B2Phc Holdings Corporation
- Self-calibrated electrochemical sensors6 Oct 2026US 12,754,160 B2Virginia Commonwealth University
- Methods of manufacturing electrochemical sensors29 Sep 2026US 12,745,932 B1Willow Laboratories, Inc.
- Circuitry for analyte measurement15 Sep 2026US 12,736,498 B2Cirrus Logic, Inc.
- Detection apparatus1 Oct 2026US 2026/0298862 A1Innolux Corporation
- Gamma-sterilizable ph sensor with improved stability against higher pressure and flow1 Oct 2026US 2026/0298863 A1
- Aluminum ion sensor and method to detect aluminum ion concentration1 Oct 2026US 2026/0298865 A1The American University in Cairo
- System and method for monitoring sulfite1 Oct 2026US 2026/0298871 A1Watgrid Lda.
- Potential measurement system for microfluidic channel24 Sep 2026US 2026/0287538 A1ProvaLabs, Inc.
Most cited
By later US patents
- Solid state reference electrode418US 4,450,842 ACordis Corporation · 1984
- Reference electrode and a measuring apparatus using the same247US 5,037,527 AKanzaki Paper Mfg. Co., Ltd. · 1991
- Reference electrode, a biosensor and a measuring apparatus therewith213US 6,464,848 B1NEC Corporation · 2002
- Miniature liquid junction reference electrode and an integrated solid state electrochemical sensor including the same168US 4,592,824 ACentre Suisse d'Electronique et de Microtechnique S.A. · 1986
- Apparatus and methods for performing electrochemical reactions105US 8,673,627 B2Life Technologies Corporation · 2014