G01J 3/20
Rowland circle spectrometers
G01J3/20 (Rowland circle spectrometers) appears on 84 US grants and 51 published applications in this corpus.
Search patents in G01J- Granted patents
- 84
- Published applications
- 51
- Assignees
- 48
- Inventors
- 157
- Latest grant
- 29 Oct 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 5 | 0 |
| 1992 | 3 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 5 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 2 |
| 2002 | 0 | 2 |
| 2003 | 4 | 0 |
| 2004 | 0 | 1 |
| 2005 | 1 | 0 |
| 2006 | 2 | 1 |
| 2007 | 1 | 3 |
| 2008 | 0 | 3 |
| 2009 | 4 | 3 |
| 2010 | 1 | 4 |
| 2011 | 4 | 5 |
| 2012 | 1 | 2 |
| 2013 | 7 | 4 |
| 2014 | 5 | 2 |
| 2015 | 4 | 2 |
| 2016 | 1 | 0 |
| 2017 | 2 | 3 |
| 2018 | 2 | 1 |
| 2019 | 3 | 3 |
| 2020 | 2 | 2 |
| 2021 | 2 | 2 |
| 2022 | 4 | 4 |
| 2023 | 0 | 1 |
| 2024 | 2 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Easily adjustable optical emission spectrometer29 Oct 2024US 12,130,178 B2Hitachi High-Tech Analytical Science Limited
- Optical system for spectrometers4 Jun 2024US 12,000,734 B2Hitachi High-Tech Analytical Science Limited
- Diffraction grating design22 Nov 2022US 11,506,535 B1Apple Inc.
- Light splitting device and method for manufacturing the same, method for dispersing light, and spectrometer2 Aug 2022US 11,402,267 B2Boe Technology Group Co., Ltd.
- Concave diffraction grating, method for producing the same, and optical device21 Jun 2022US 11,366,255 B2Hitachi High-Tech Corporation
- Light source for generating illumination light10 Oct 2024US 2024/0337598 A1Roche Diagnostics Operations, Inc.
- Spectroscope and analysis system28 Sep 2023US 2023/0304922 A1
- Optical system for spectrometers15 Dec 2022US 2022/0397455 A1Hitachi High-Tech Analytical Science Limited
- An easily adjustable optical emission spectrometer8 Dec 2022US 2022/0390279 A1Hitachi High-Tech Analytical Science Limited
- Atomic absorption spectrometer5 May 2022US 2022/0136964 A1Analytik Jena AG
Most cited
By later US patents
- Multiplex spectroscopy233US 5,483,335 A1996
- Spectrometer for the simultaneous measurement of intensity in various spectral regions161US 4,993,834 AFried. Krupp Gesellschaft mit beschrankter Haftung · 1991
- Convex diffraction grating imaging spectrometer92US 5,880,834 AThe United States of America as represented by the Administrator of the National Aeronautics and Space Administration · 1999
- Monolithically integrated wavelength division multiplexing laser array69US 5,228,103 AUniversity of Maryland · 1993
- Multi-stripe array grating integrated cavity laser59US 5,351,262 ABell Communications Research, Inc. · 1994