G01N 21/031
Multipass arrangements
Official title: {Multipass arrangements}
G01N21/031 (Multipass arrangements) appears on 587 US grants and 622 published applications in this corpus.
Search patents in G01N- Granted patents
- 587
- Published applications
- 622
- Assignees
- 422
- Inventors
- 1,475
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 3 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 7 | 0 |
| 1989 | 2 | 0 |
| 1990 | 6 | 0 |
| 1991 | 8 | 0 |
| 1992 | 3 | 0 |
| 1993 | 5 | 0 |
| 1994 | 5 | 0 |
| 1995 | 5 | 0 |
| 1996 | 9 | 0 |
| 1997 | 2 | 0 |
| 1998 | 8 | 0 |
| 1999 | 11 | 0 |
| 2000 | 8 | 0 |
| 2001 | 3 | 1 |
| 2002 | 3 | 10 |
| 2003 | 8 | 9 |
| 2004 | 5 | 6 |
| 2005 | 9 | 7 |
| 2006 | 6 | 14 |
| 2007 | 7 | 14 |
| 2008 | 11 | 14 |
| 2009 | 11 | 24 |
| 2010 | 14 | 28 |
| 2011 | 13 | 17 |
| 2012 | 17 | 21 |
| 2013 | 21 | 22 |
| 2014 | 14 | 23 |
| 2015 | 18 | 31 |
| 2016 | 23 | 31 |
| 2017 | 27 | 31 |
| 2018 | 45 | 42 |
| 2019 | 29 | 33 |
| 2020 | 35 | 23 |
| 2021 | 25 | 21 |
| 2022 | 25 | 52 |
| 2023 | 36 | 44 |
| 2024 | 30 | 42 |
| 2025 | 37 | 33 |
| 2026 | 19 | 29 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Light recycling article for bio-assay18 Aug 2026US 12,710,360 B23M Innovative Properties Company
- Optical absorption spectrometer16 Jun 2026US 12,656,247 B2ams International AG
- Color gas sensor module comprising optical measurement device16 Jun 2026US 12,656,262 B2Seoul National University R&Db Foundation
- Photodetector and beating spectroscopy device9 Jun 2026US 12,650,377 B2Hamamatsu Photonics K.K.
- Compact injection molded optical module for gas sensing2 Jun 2026US 12,644,831 B2Renesas Electronics America Inc.
- High-Dynamic-Range Laser Absorption Spectrometer1 Oct 2026US 2026/0298817 A1California Institute of Technology
- Optical concentration measuring device and optical member13 Aug 2026US 2026/0235501 A1Asahi Kasei Microdevices Corporation
- Optical concentration measuring device13 Aug 2026US 2026/0235502 A1Asahi Kasei Microdevices Corporation
- Optical concentration measuring device13 Aug 2026US 2026/0235503 A1Asahi Kasei Microdevices Corporation
- Self-aligned resonant cavity gas cell16 Jul 2026US 2026/0202314 A1Honeywell International Inc.
Most cited
By later US patents
- Multi-channel molecular gas analysis by laser-activated Raman light scattering181US 4,784,486 AAlbion Instruments, Inc. · 1988
- Diagnostic tests using near-infrared laser absorption spectroscopy137US 5,317,156 ASRI International · 1994
- Gas species monitor system133US 4,953,976 ASpectral Sciences, Inc. · 1990
- Photometer125US 5,307,144 ASeikagaku Kogyo Kabushiki Kaisha · 1994
- Compact sensor using microcavity structures125US 6,777,244 B2HRL Laboratories, LLC · 2004