G01N 27/021
Before and after chemical transformation of the material
Official title: {before and after chemical transformation of the material}
G01N27/021 (Before and after chemical transformation of the material) appears on 101 US grants and 111 published applications in this corpus.
Search patents in G01N- Granted patents
- 101
- Published applications
- 111
- Assignees
- 96
- Inventors
- 273
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 1 |
| 2003 | 2 | 3 |
| 2004 | 1 | 1 |
| 2005 | 1 | 2 |
| 2006 | 1 | 1 |
| 2007 | 0 | 1 |
| 2008 | 1 | 1 |
| 2009 | 0 | 1 |
| 2010 | 2 | 4 |
| 2011 | 1 | 3 |
| 2012 | 2 | 6 |
| 2013 | 4 | 5 |
| 2014 | 3 | 6 |
| 2015 | 5 | 9 |
| 2016 | 5 | 7 |
| 2017 | 8 | 5 |
| 2018 | 7 | 12 |
| 2019 | 7 | 9 |
| 2020 | 7 | 8 |
| 2021 | 5 | 6 |
| 2022 | 2 | 1 |
| 2023 | 5 | 8 |
| 2024 | 2 | 7 |
| 2025 | 8 | 1 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- DNA-responsive hydrogels12 May 2026US 12,624,352 B2Massachusetts Institute of Technology
- Systems and methods for measuring kinetic response of chemical sensor elements13 Jan 2026US 12,523,626 B2Regents of the University of Minnesota
- Electrical impedance measurement using an electron beam28 Oct 2025US 12,455,254 B2Applied Materials Israel Ltd.
- Real-time impedance spectroscopy using 2D transition metal dichalcogenide material-based chemical sensor systems30 Sep 2025US 12,429,445 B2The United States of America as represented by the Secretary of the Air Force
- Systems and methods for multi-modal and multiplexed electrochemical detection and reporting of environmental contaminants23 Sep 2025US 12,422,396 B2EnLiSense, LLC
- Systems and methods for measuring kinetic response of chemical sensor elements24 Sep 2026US 2026/0287535 A1Regents of the University of Minnesota
- Battery management system16 Jul 2026US 2026/0202482 A1Toyota Jidosha Kabushiki Kaisha
- Hydrogen sulfide detection device12 Mar 2026US 2026/0074309 A1Toyota Jidosha Kabushiki Kaisha
- Device and method to probe an electrical property of a material in relation to charge sharing28 Aug 2025US 2025/0271378 A1
- Systems and methods for multi-modal and multiplexed electrochemical detection and reporting of environmental contaminants28 Nov 2024US 2024/0393287 A1EnLiSense, LLC
Most cited
By later US patents
- Method for measuring the concentration of a substance in a solution76US 6,114,176 AGambro AB · 2000
- Apparatus for measuring a decomposable compound in solution63US 6,521,184 B1Gambro AB · 2003
- Measurement apparatus for measuring a biological substance within a fluid substrate57US 5,218,312 A1993
- Self-contained reverse osmosis electronic monitoring system34US 5,362,383 AEcowater Systems, Inc. · 1994
- Carbon monitor containing anion exchange resin32US 5,141,717 AIonics, Incorporated · 1992