G01N 2021/3513
Open path with an instrumental source
Official title: {Open path with an instrumental source}
G01N2021/3513 (Open path with an instrumental source) appears on 212 US grants and 224 published applications in this corpus.
Search patents in G01N- Granted patents
- 212
- Published applications
- 224
- Assignees
- 154
- Inventors
- 431
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 4 | 0 |
| 1995 | 4 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 1 |
| 2002 | 2 | 1 |
| 2003 | 5 | 11 |
| 2004 | 9 | 2 |
| 2005 | 3 | 3 |
| 2006 | 1 | 6 |
| 2007 | 4 | 10 |
| 2008 | 3 | 5 |
| 2009 | 8 | 4 |
| 2010 | 2 | 8 |
| 2011 | 8 | 14 |
| 2012 | 8 | 8 |
| 2013 | 7 | 7 |
| 2014 | 7 | 7 |
| 2015 | 8 | 10 |
| 2016 | 9 | 3 |
| 2017 | 3 | 7 |
| 2018 | 9 | 12 |
| 2019 | 13 | 16 |
| 2020 | 12 | 11 |
| 2021 | 11 | 12 |
| 2022 | 5 | 13 |
| 2023 | 14 | 14 |
| 2024 | 11 | 18 |
| 2025 | 22 | 18 |
| 2026 | 8 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Time-of-flight measurement on user with cameras and position sensor6 Oct 2026US 12,751,628 B2Omni Medsci, Inc.
- Remote sensing system with time-of-flight sensor, active illuminator and light sensing system1 Sep 2026US 12,721,527 B2Omni Medsci, Inc.
- Systems and methods for an open path gas detector with an integrated optical sensor23 Jun 2026US 12,663,366 B2MSA Technology, LLC
- Systems and methods for characterizing atmospheric emissions26 May 2026US 12,638,389 B2The Regents of the University of Colorado
- Laser gas sensor with explosion proof enclosure14 Apr 2026US 12,603,708 B2Boreal Laser Inc.
- Systems and methods for characterizing atmospheric emissions20 Aug 2026US 2026/0243675 A1The Regents of the University of Colorado, a body corporate
- Aerial methane gas leak detection pod16 Jul 2026US 2026/0202279 A1Vanguard Pipeline Inspection LLC
- Dual frequency comb spectroscopy enabling attachment for mobile devices16 Jul 2026US 2026/0202319 A1
- Apparatuses, systems, and methods for determining gas emssion rate detection sensitivity and gas flow speed using remote gas concentration measurements20 Nov 2025US 2025/0354901 A1Bridger Photonics, Inc.
- Method for remote detection of gaseous substances in the atmosphere by the DIAL system with two lasers and a remote detector13 Nov 2025US 2025/0347619 A1Sec Technologies, S.R.O.
Most cited
By later US patents
- Methods for differential image quality enhancement for a multiple detector system, systems and use thereof1,019US 9,471,969 B2ExxonMobil Upstream Research Company · 2016
- Apparatus for remote analysis of vehicle emissions126US 5,401,967 AColorado Seminary dba University of Denver · 1995
- Remote gas analyzer for motor vehicle exhaust emissions surveillance77US 4,924,095 AWest Lodge Research · 1990
- Mapping air contaminants using path-integrated optical remote sensing with a non-overlapping variable path length beam geometry72US 6,542,242 B1University of Washington · 2003
- Optical sensing apparatus for remotely measuring exhaust gas composition of moving motor vehicles70US 5,591,975 ASanta Barbara Research Center · 1997