G01N 2021/3536
Using modulation of pressure or density
Official title: {using modulation of pressure or density}
G01N2021/3536 (Using modulation of pressure or density) appears on 19 US grants and 16 published applications in this corpus.
Search patents in G01N- Granted patents
- 19
- Published applications
- 16
- Assignees
- 18
- Inventors
- 54
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 1 | 0 |
| 2012 | 0 | 0 |
| 2013 | 1 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 1 | 1 |
| 2017 | 1 | 1 |
| 2018 | 1 | 0 |
| 2019 | 0 | 2 |
| 2020 | 0 | 3 |
| 2021 | 2 | 2 |
| 2022 | 1 | 2 |
| 2023 | 2 | 1 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Prediction of percentage levels of gases that are undetectable via optical absorption measurements19 May 2026US 12,631,553 B2Schlumberger Technology Corporation
- High throughput high resolution gas sorption screening23 Sep 2025US 12,422,348 B2Saudi Arabian Oil Company
- Supercritical carbon dioxide state monitoring and control system based on infrared spectrum characteristic analysis30 May 2023US 11,662,306 B2Zhejiang University
- High throughput high resolution gas sorption screening28 Feb 2023US 11,592,381 B2Saudi Arabian Oil Company
- Assembly and method for measuring a substance concentration in a gaseous medium by means of absorption spectroscopy22 Mar 2022US 11,280,726 B2Sensatronic GmbH
- Prediction of percentage levels of gases that are undetectable via optical absorption measurements23 Apr 2026US 2026/0110631 A1Schlumberger Technology Corporation
- High throughput high resolution gas sorption screening1 Jun 2023US 2023/0168171 A1Saudi Arabian Oil Company
- Supercritical Carbon Dioxide State Monitoring and Control System Based on Infrared Spectrum Characteristic Analysis29 Sep 2022US 2022/0307973 A1Zhejiang University
- High throughput high resolution gas sorption screening4 Aug 2022US 2022/0244162 A1Saudi Arabian Oil Company
- Gas measurement device and gas measurement method16 Dec 2021US 2021/0389235 A1Shimadzu Corporation
Most cited
By later US patents
- Methods and apparatus for optically measuring fluid compressibility downhole77US 6,474,152 B1Schlumberger Technology Corporation · 2002
- Apparatus for analyzing fluid by multi-fluid modulation mode25US 5,255,072 AHoriba, Ltd. · 1993
- Calibration method for gas concentration measurements7US 5,369,278 AVaisala Oy · 1994
- Process and device for measuring the amount of impurities in a gas sample to be analyzed7US 6,341,521 B12002
- Isotopic gas analyzer and method of judging absorption capacity of carbon dioxide absorbent7US 6,940,083 B2Otsuka Pharmaceutical Co., Ltd. · 2005