G01N 27/40
Semi-permeable membranes or partitions
G01N27/40 (Semi-permeable membranes or partitions) appears on 204 US grants and 206 published applications in this corpus.
Search patents in G01N- Granted patents
- 204
- Published applications
- 206
- Assignees
- 163
- Inventors
- 501
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 4 | 0 |
| 1981 | 4 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 5 | 0 |
| 1985 | 5 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 4 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 4 | 0 |
| 1998 | 4 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 6 | 2 |
| 2002 | 6 | 6 |
| 2003 | 3 | 5 |
| 2004 | 3 | 3 |
| 2005 | 2 | 4 |
| 2006 | 0 | 2 |
| 2007 | 1 | 4 |
| 2008 | 0 | 4 |
| 2009 | 0 | 2 |
| 2010 | 3 | 4 |
| 2011 | 2 | 3 |
| 2012 | 2 | 3 |
| 2013 | 1 | 7 |
| 2014 | 6 | 9 |
| 2015 | 11 | 14 |
| 2016 | 6 | 15 |
| 2017 | 15 | 18 |
| 2018 | 1 | 12 |
| 2019 | 9 | 8 |
| 2020 | 9 | 17 |
| 2021 | 12 | 10 |
| 2022 | 10 | 11 |
| 2023 | 11 | 14 |
| 2024 | 7 | 10 |
| 2025 | 7 | 11 |
| 2026 | 13 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Encoding state change of nanopore to reduce data size29 Sep 2026US 12,748,069 B2Roche Sequencing Solutions, Inc.
- Sensor assembly with wicking member for liquid junction wet up18 Aug 2026US 12,710,396 B2Siemens Healthcare Diagnostics Inc.
- Biosensor for water toxicity monitoring11 Aug 2026US 12,704,493 B2National Research Council of Canada
- Method for optical activation of the sensor surface, in particular for zero chlorine sensors16 Jun 2026US 12,655,038 B2ProMinent GmbH
- Reagentless dissolution and quantification of particulate analyte in a sample via membrane electrolysis16 Jun 2026US 12,656,303 B2University of Cincinnati
- Diffusion resistance layer for analyte sensors8 Oct 2026US 2026/0309670 A1DexCom, Inc.
- Sensor and device for a sensor comprising gel electrolyte24 Sep 2026US 2026/0287544 A1Mettler-Toledo AG
- Modular Electrochemical Sensing System and Method for Parameter Monitoring10 Sep 2026US 2026/0266756 A1Page Technologies Inc.
- Combination Electrode Having a Hydrogel Diaphragm4 Jun 2026US 2026/0153473 A1Hamilton Bonaduz AG
- Multi-analyte monitoring sensor23 Apr 2026US 2026/0108191 A1Shenzhen Sisensing Co., Ltd.
Most cited
By later US patents
- Ionic semiconductor materials and applications thereof795US 5,055,171 AT and G Corporation · 1991
- Flow-through electrochemical system analytical method660US 4,172,770 ATechnicon Instruments Corporation · 1979
- Electrochemical sensors188US 5,658,444 AMedisense, Inc. · 1997
- Electrochemical sensor employing a gas-permeable hydrophilic polyurethane membrane135US 4,534,355 ASmith and Nephew Associated Companies Limited · 1985
- Ion selective membranes for use in ion sensing electrodes128US 4,519,973 AMedtronic, Inc. · 1985