G01N 27/225
By using hygroscopic materials
Official title: {by using hygroscopic materials}
G01N27/225 (By using hygroscopic materials) appears on 208 US grants and 163 published applications in this corpus.
Search patents in G01N- Granted patents
- 208
- Published applications
- 163
- Assignees
- 120
- Inventors
- 427
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 7 | 0 |
| 1985 | 6 | 0 |
| 1986 | 4 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 6 | 0 |
| 1990 | 6 | 0 |
| 1991 | 6 | 0 |
| 1992 | 3 | 0 |
| 1993 | 4 | 0 |
| 1994 | 7 | 0 |
| 1995 | 2 | 0 |
| 1996 | 5 | 0 |
| 1997 | 3 | 0 |
| 1998 | 6 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 1 |
| 2002 | 4 | 4 |
| 2003 | 4 | 5 |
| 2004 | 5 | 12 |
| 2005 | 4 | 1 |
| 2006 | 4 | 3 |
| 2007 | 0 | 4 |
| 2008 | 4 | 3 |
| 2009 | 0 | 2 |
| 2010 | 1 | 1 |
| 2011 | 2 | 2 |
| 2012 | 0 | 2 |
| 2013 | 0 | 5 |
| 2014 | 2 | 6 |
| 2015 | 5 | 6 |
| 2016 | 7 | 7 |
| 2017 | 7 | 15 |
| 2018 | 3 | 10 |
| 2019 | 8 | 11 |
| 2020 | 14 | 15 |
| 2021 | 8 | 10 |
| 2022 | 13 | 12 |
| 2023 | 9 | 4 |
| 2024 | 8 | 12 |
| 2025 | 6 | 6 |
| 2026 | 4 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Automated and wireless accelerated heat treat life testing system29 Sep 2026US 12,748,009 B2UIF (University Industry Foundation), Yonsei University
- Humidity sensor with improved contaminant sealing1 Sep 2026US 12,723,998 B2Dwyer Instruments, Inc.
- Monolithic humidity sensor devices and methods of manufacture30 Jun 2026US 12,669,461 B2Texas Instruments Incorporated
- Sensing diaper content24 Feb 2026US 12,558,270 B2Imec Vzw
- Drift-free humidity sensor and calibration method thereof25 Nov 2025US 12,480,902 B2Sensylink Microelectronics Inc.
- Sensor cover and related methods11 Jun 2026US 2026/0160603 A1Addium, Inc.
- Electrical sensing of gases in packaged products and monitoring freshness or condition of perishable products30 Apr 2026US 2026/0118336 A1Blakbear Ltd
- Moisture in fluid sensor9 Apr 2026US 2026/0098829 A1Honeywell International Inc.
- Sensor arrangement for sensing a filling state of an absorbent article19 Feb 2026US 2026/0049956 A1Essity Hygiene and Health Aktiebolag
- Radio frequency identification (rfid) with sensors18 Sep 2025US 2025/0293433 A1RFMicron, Inc.
Most cited
By later US patents
- Capacitance monitoring bridge circuit for an enthalpy responsive device72US 4,558,595 AHoneywell Inc. · 1985
- Humidity sensing element69US 4,564,882 AGeneral Signal Corporation · 1986
- Humidity sensing element68US 4,429,343 ALeeds & Northrup Company · 1984
- Capacitance measuring circuit68US 4,831,325 AGeneral Signal Corporation · 1989
- Capacitive moisture sensor and fabrication method for capacitive moisture sensor68US 6,445,565 B1Denso Corporation · 2002