G01N 2201/1218
For pressure variations
Official title: for pressure variations
G01N2201/1218 (For pressure variations) appears on 46 US grants and 52 published applications in this corpus.
Search patents in G01N- Granted patents
- 46
- Published applications
- 52
- Assignees
- 43
- Inventors
- 133
- Latest grant
- 30 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 2 |
| 2005 | 2 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 1 | 1 |
| 2009 | 2 | 1 |
| 2010 | 1 | 1 |
| 2011 | 0 | 1 |
| 2012 | 1 | 3 |
| 2013 | 1 | 2 |
| 2014 | 0 | 2 |
| 2015 | 4 | 2 |
| 2016 | 0 | 3 |
| 2017 | 2 | 1 |
| 2018 | 2 | 3 |
| 2019 | 5 | 0 |
| 2020 | 2 | 4 |
| 2021 | 0 | 4 |
| 2022 | 4 | 7 |
| 2023 | 5 | 7 |
| 2024 | 4 | 2 |
| 2025 | 6 | 2 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Gas analysis apparatus and gas analysis method30 Sep 2025US 12,429,420 B2HORIBA STEC, Co., Ltd.
- Analysis device, program for analysis device, and analysis method13 May 2025US 12,298,232 B2Horiba, Ltd.
- Photoacoustic gas sensors with improved signal-to-noise ratio29 Apr 2025US 12,287,280 B2InvenSense, Inc.
- Fluorescence measuring device8 Apr 2025US 12,270,761 B2Shoreline Science Research, Inc.
- Material evaluating arrangement for an agricultural work machine18 Feb 2025US 12,228,504 B2Deere & Company
- Optical analysis device3 Sep 2026US 2026/0259134 A1Ebara Jitsugyo Co., Ltd.
- Gas analysis device, exhaust gas analysis system, and gas analysis method11 Jun 2026US 2026/0160678 A1Horiba, Ltd.
- Process for operating an optical gas measuring system for determining the concentration of measuring gas, which has a line spectrum, optical gas measuring system and computer program product17 Apr 2025US 2025/0123199 A1Dräger Safety AG & Co. KGaA
- Contactless determining a physical feature of a target item30 Jan 2025US 2025/0035428 A1Das-Nano Tech S.L.
- Method and apparatus for determining a force applied to a sample during an optical interrogation technique19 Sep 2024US 2024/0310277 A1Thermo Electron Scientific Instruments LLC
Most cited
By later US patents
- Gas analyzers51US 4,859,859 ACascadia Technology Corporation · 1989
- Constant pressure gas cell27US 5,245,405 ABOC Health Care, Inc. · 1993
- Pressure-invariant trace gas detection12US 7,508,521 B2SpectraSensors, Inc. · 2009
- Method and apparatus for emission testing9US 4,881,183 ASun Electric Corporation · 1989
- Compensated infrared absorption sensor for carbon dioxide and other infrared absorbing gases8US 6,969,857 B2Gas Research Institute · 2005