G01J 3/28
Investigating the spectrum
Official title: Investigating the spectrum (using colour filters G01J3/51)
G01J3/28 (Investigating the spectrum) appears on 10,620 US grants and 10,817 published applications in this corpus.
Search patents in G01J- Granted patents
- 10,620
- Published applications
- 10,817
- Assignees
- 3,946
- Inventors
- 18,885
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 27 | 0 |
| 1977 | 29 | 0 |
| 1978 | 25 | 0 |
| 1979 | 24 | 0 |
| 1980 | 19 | 0 |
| 1981 | 32 | 0 |
| 1982 | 24 | 0 |
| 1983 | 10 | 0 |
| 1984 | 23 | 0 |
| 1985 | 28 | 0 |
| 1986 | 36 | 0 |
| 1987 | 63 | 0 |
| 1988 | 64 | 0 |
| 1989 | 63 | 0 |
| 1990 | 60 | 0 |
| 1991 | 79 | 0 |
| 1992 | 64 | 0 |
| 1993 | 71 | 0 |
| 1994 | 70 | 0 |
| 1995 | 66 | 0 |
| 1996 | 77 | 0 |
| 1997 | 68 | 0 |
| 1998 | 140 | 0 |
| 1999 | 143 | 0 |
| 2000 | 143 | 0 |
| 2001 | 91 | 54 |
| 2002 | 114 | 148 |
| 2003 | 158 | 161 |
| 2004 | 155 | 215 |
| 2005 | 144 | 269 |
| 2006 | 220 | 321 |
| 2007 | 234 | 333 |
| 2008 | 277 | 317 |
| 2009 | 273 | 299 |
| 2010 | 237 | 367 |
| 2011 | 259 | 315 |
| 2012 | 275 | 369 |
| 2013 | 313 | 415 |
| 2014 | 358 | 456 |
| 2015 | 395 | 522 |
| 2016 | 414 | 487 |
| 2017 | 476 | 521 |
| 2018 | 505 | 646 |
| 2019 | 635 | 664 |
| 2020 | 603 | 721 |
| 2021 | 618 | 710 |
| 2022 | 554 | 649 |
| 2023 | 502 | 602 |
| 2024 | 555 | 541 |
| 2025 | 498 | 440 |
| 2026 | 309 | 275 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G01J 3/42Absorption spectrometry2,607
- G01J 3/44Raman spectrometry2,293
- G01J 3/2823Imaging spectrometer2,276
- G01J 3/2803Using photoelectric array detector1,964
- G01J 3/30Measuring the intensity of spectral lines directly on the spectrum itself1,644
- G01J 3/45Interferometric spectrometry1,373
- G01J 2003/2866MarkersIndexing code687
- G01J 3/443Emission spectrometry558
All 18 subgroupsShow fewer
- G01J 3/447Polarisation spectrometry287
- G01J 2003/283Computer-interfacedIndexing code256
- G01J 3/2889Rapid scan spectrometers182
- G01J 3/457Correlation spectrometry156
- G01J 3/2846Using modulation grid84
- G01J 2003/2859Peak detecting in spectrumIndexing code51
- G01J 3/40Measuring the intensity of spectral lines by determining density of a photograph42
- G01J 2003/2853Averaging successive scans or readingsIndexing code10
- G01J 2003/2886Investigating periodic spectrumIndexing code9
- G01J 2003/2896Vidicon, image intensifier tubeIndexing code3
Recent patents
- Time-of-flight measurement on user with cameras and position sensor6 Oct 2026US 12,751,628 B2Omni Medsci, Inc.
- Methods for compact multi-color flow cytometers having compact detection modules6 Oct 2026US 12,754,128 B2Cytek Biosciences, Inc.
- Raman spectroscopy method and apparatus6 Oct 2026US 12,754,131 B2The University Court of the University of Edinburgh
- Photo-triggered nucleic acid constructs and methods for molecular detection6 Oct 2026US 12,754,137 B2InSilixa, Inc.
- Photometric process measurement arrangement and a photometric measurement method29 Sep 2026US 12,747,985 B2Hach Lange GmbH
- Nano-satellite atmospheric chemistry hyperspectral observation system8 Oct 2026US 2026/0309546 A1Triad National Security, LLC
- Pulse windowing optical sensor8 Oct 2026US 2026/0309547 A1Tokyo Electron Limited
- Gaseous leak detection system and associated methods8 Oct 2026US 2026/0309573 A1TrelliSense, Inc.
- Methods and systems for raman spectra-based identification of chemical compounds8 Oct 2026US 2026/0309626 A1Genentech, Inc.
- Measuring device, measuring method, and vacuum processing apparatus8 Oct 2026US 2026/0311977 A1Tokyo Electron Limited
Most cited
By later US patents
- Manual and automatic probe calibration1,429US 5,758,644 AMasimo Corporation · 1998
- Manual and automatic probe calibration1,177US 6,011,986 AMasimo Corporation · 2000
- Optical probe and positioning wrap1,167US 6,678,543 B2Masimo Corporation · 2004
- Manual and automatic probe calibration1,147US 6,397,091 B2Masimo Corporation · 2002
- Multivariate analysis of green to ultraviolet spectra of cell and tissue samples1,063US 7,289,835 B2Masimo Laboratories, Inc. · 2007