G01J 3/447
Polarisation spectrometry
G01J3/447 (Polarisation spectrometry) appears on 287 US grants and 240 published applications in this corpus.
Search patents in G01J- Granted patents
- 287
- Published applications
- 240
- Assignees
- 209
- Inventors
- 588
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 7 | 0 |
| 1999 | 7 | 0 |
| 2000 | 7 | 0 |
| 2001 | 4 | 3 |
| 2002 | 8 | 7 |
| 2003 | 10 | 4 |
| 2004 | 11 | 4 |
| 2005 | 3 | 8 |
| 2006 | 8 | 11 |
| 2007 | 11 | 5 |
| 2008 | 6 | 7 |
| 2009 | 5 | 10 |
| 2010 | 8 | 3 |
| 2011 | 5 | 7 |
| 2012 | 3 | 6 |
| 2013 | 8 | 6 |
| 2014 | 4 | 10 |
| 2015 | 10 | 11 |
| 2016 | 15 | 11 |
| 2017 | 11 | 17 |
| 2018 | 16 | 18 |
| 2019 | 23 | 17 |
| 2020 | 14 | 13 |
| 2021 | 20 | 11 |
| 2022 | 14 | 12 |
| 2023 | 7 | 15 |
| 2024 | 11 | 8 |
| 2025 | 8 | 10 |
| 2026 | 7 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Polarimetric image sensor29 Sep 2026US 12,747,988 B2STMicroelectronics (Crolles 2) SAS
- Polarization intelligent sensing system and polarization intelligent sensing method15 Sep 2026US 12,736,404 B2Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences
- Reference switch architectures for noncontact sensing of substances18 Aug 2026US 12,710,358 B2Apple Inc.
- Spectroscopic ellipsometry system for thin film imaging9 Jun 2026US 12,650,375 B2Bruker Nano, Inc.
- Light measuring device and method of manufacturing light measuring device24 Mar 2026US 12,584,792 B2Hamamatsu Photonics K.K.
- Systems and methods for mueller matrix imaging13 Aug 2026US 2026/0235495 A1President and Fellows of Harvard College
- Metrology device normalization channel25 Jun 2026US 2026/0177933 A1Onto Innovation Inc.
- Optical Spectrum Obtaining Method and Apparatus28 May 2026US 2026/0146890 A1Huawei Technologies Co., Ltd.
- Magneto-optical chemical sensors for process chambers28 May 2026US 2026/0146892 A1APPLIED Materials.Inc.
- Laser-based sub-doppler circular dichroism spectroscopy in frc device9 Apr 2026US 2026/0098919 A1Tae Technologies, Inc.
Most cited
By later US patents
- Method and apparatus for simultaneously measuring a plurality of spectral wavelengths present in electromagnetic radiation189US 4,905,169 AThe United States of America as represented by the United States Department of Energy · 1990
- Measurement and control of linewidths in periodic structures using spectroscopic ellipsometry140US 5,739,909 ALucent Technologies Inc. · 1998
- Spectral image input device110US 6,631,001 B2Minolta Co., Ltd. · 2003
- Ellipsometer107US 5,373,359 AJ. A. Woollam Co. Inc. · 1994
- Regression calibrated spectroscopic rotating compensator ellipsometer system with photo array detector99US 5,872,630 A1999