G01N 27/419
Measuring voltages or currents with a combination of oxygen pumping cells and
Official title: Measuring voltages or currents with a combination of oxygen pumping cells and oxygen concentration cells
G01N27/419 (Measuring voltages or currents with a combination of oxygen pumping cells and) appears on 394 US grants and 426 published applications in this corpus.
Search patents in G01N- Granted patents
- 394
- Published applications
- 426
- Assignees
- 67
- Inventors
- 585
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 4 | 0 |
| 1995 | 8 | 0 |
| 1996 | 5 | 0 |
| 1997 | 8 | 0 |
| 1998 | 8 | 0 |
| 1999 | 13 | 0 |
| 2000 | 12 | 0 |
| 2001 | 14 | 8 |
| 2002 | 10 | 26 |
| 2003 | 19 | 18 |
| 2004 | 14 | 21 |
| 2005 | 8 | 19 |
| 2006 | 5 | 5 |
| 2007 | 8 | 14 |
| 2008 | 9 | 9 |
| 2009 | 3 | 18 |
| 2010 | 9 | 8 |
| 2011 | 10 | 14 |
| 2012 | 9 | 9 |
| 2013 | 12 | 10 |
| 2014 | 11 | 10 |
| 2015 | 12 | 17 |
| 2016 | 7 | 24 |
| 2017 | 19 | 14 |
| 2018 | 15 | 34 |
| 2019 | 23 | 23 |
| 2020 | 20 | 18 |
| 2021 | 21 | 29 |
| 2022 | 16 | 17 |
| 2023 | 8 | 23 |
| 2024 | 18 | 15 |
| 2025 | 13 | 13 |
| 2026 | 17 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Gas concentration detecting apparatus16 Jun 2026US 12,656,301 B2Denso Corporation
- Gas concentration measuring device and manufacturing method for the same16 Jun 2026US 12,656,308 B2Denso Corporation
- Co2 mass estimation system, exhaust gas composition ratio estimation method, and co2 mass estimation method17 Sep 2026US 2026/0276581 A1NGK Insulators, Ltd.
- Sensor element, gas sensor, and sensor element manufacturing method25 Jun 2026US 2026/0177522 A1Niterra Co., Ltd.
- Gas sensor18 Jun 2026US 2026/0168956 A1NGK Insulators, Ltd.
- Gas sensor and sensor element18 Jun 2026US 2026/0168957 A1NGK Insulators, Ltd.
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Most cited
By later US patents
- NOx sensor301US 6,773,565 B2Riken · 2004
- Method of measuring a gas component and sensing device for measuring the gas component95US 5,672,811 ANGK Insulators, Ltd. · 1997
- Procedure to recognize the diffusion gas composition in a wideband lambda sensor81US 7,744,740 B2Robert Bosch GmbH · 2010
- Series planar design for solid electrolyte oxygen pump78US 5,750,279 AAir Products and Chemicals, Inc. · 1998
- Method and sensing device for measuring predetermined gas component in measurement gas70US 5,763,763 ANGK Insulators, Ltd. · 1998