G01N 27/4167
Ph
Official title: {pH (electrodes therefor G01N27/302, G01N27/36)}
G01N27/4167 (Ph) appears on 260 US grants and 338 published applications in this corpus.
Search patents in G01N- Granted patents
- 260
- Published applications
- 338
- Assignees
- 179
- Inventors
- 709
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 3 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 1 |
| 2002 | 2 | 1 |
| 2003 | 1 | 2 |
| 2004 | 0 | 2 |
| 2005 | 1 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 1 | 3 |
| 2009 | 0 | 1 |
| 2010 | 1 | 1 |
| 2011 | 0 | 5 |
| 2012 | 2 | 18 |
| 2013 | 4 | 7 |
| 2014 | 7 | 17 |
| 2015 | 14 | 17 |
| 2016 | 6 | 19 |
| 2017 | 17 | 31 |
| 2018 | 10 | 15 |
| 2019 | 22 | 44 |
| 2020 | 25 | 28 |
| 2021 | 23 | 28 |
| 2022 | 24 | 23 |
| 2023 | 24 | 26 |
| 2024 | 17 | 21 |
| 2025 | 18 | 9 |
| 2026 | 15 | 18 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Electrode holder6 Oct 2026US 12,754,156 B2Mettler-Toledo Instruments (Shanghai) Co., Ltd.
- Nanopore formation method29 Sep 2026US 12,748,099 B2Hitachi High-Tech Corporation
- Water quality monitor system and method1 Sep 2026US 12,724,020 B2Pentair Water Pool and Spa, Inc.
- Robotic device and method for gathering soil data along pipelines using smart sensors25 Aug 2026US 12,716,882 B2Saudi Arabian Oil Company
- Microfabricated device with micro-environment sensors for assaying coagulation in fluid samples23 Jun 2026US 12,663,427 B2Abbott Point of Care Inc.
- Electrochemical process measurement arrangement17 Sep 2026US 2026/0276582 A1Hach Lange GmbH
- Modular Electrochemical Sensing System and Method for Parameter Monitoring10 Sep 2026US 2026/0266756 A1Page Technologies Inc.
- Systems and methods for analyzing a microvolume sample27 Aug 2026US 2026/0251611 A1Thermo Electron Scientific Instruments LLC
- Proton rich ionic fluid and compatibility with common materials20 Aug 2026US 2026/0242961 A1TegIpco, LLC
- Sensor apparatus for partially saturated porous media applications20 Aug 2026US 2026/0243637 A1Commonwealth Scientific and Industrial Research Organisation
Most cited
By later US patents
- System for calibrating, monitoring and reporting the status of a pH sensor178US 5,016,201 A1991
- Galvanic probes as pH and oxidation reduction potential sensors, control devices employing such probes, and related methods35US 6,653,842 B2Digital Concepts of Missouri, Inc. · 2003
- Combined pH and dissolved carbon dioxide gas sensor33US 4,818,361 ADiamond Sensor Systems, Inc. · 1989
- Magnetochemical sensor and method for remote interrogation29US 5,821,129 A1998
- Unanchored sensor for fluid characteristics29US 6,057,773 A2000