G01N 21/6489
Photoluminescence of semiconductors
Official title: {Photoluminescence of semiconductors}
G01N21/6489 (Photoluminescence of semiconductors) appears on 406 US grants and 513 published applications in this corpus.
Search patents in G01N- Granted patents
- 406
- Published applications
- 513
- Assignees
- 315
- Inventors
- 1,106
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 4 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 2 |
| 2002 | 5 | 6 |
| 2003 | 6 | 7 |
| 2004 | 6 | 11 |
| 2005 | 2 | 4 |
| 2006 | 6 | 8 |
| 2007 | 4 | 14 |
| 2008 | 6 | 12 |
| 2009 | 6 | 15 |
| 2010 | 9 | 14 |
| 2011 | 12 | 18 |
| 2012 | 12 | 22 |
| 2013 | 14 | 18 |
| 2014 | 14 | 22 |
| 2015 | 19 | 38 |
| 2016 | 29 | 25 |
| 2017 | 24 | 26 |
| 2018 | 29 | 35 |
| 2019 | 26 | 27 |
| 2020 | 26 | 29 |
| 2021 | 28 | 33 |
| 2022 | 21 | 27 |
| 2023 | 21 | 22 |
| 2024 | 17 | 33 |
| 2025 | 28 | 29 |
| 2026 | 12 | 16 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Dynamical liquid sensors25 Aug 2026US 12,716,967 B2Toyota Jidosha Kabushiki Kaisha
- Facet region detection method and wafer generation method16 Jun 2026US 12,654,254 B2Disco Corporation
- Sensor system and method for sensing a physical quantity16 Jun 2026US 12,657,662 B2Rohde & Schwarz GmbH & Co.KG
- System and method for evaluating and determining color in gemstones9 Jun 2026US 12,650,387 B1Sarine Technologies Ltd.
- Outdoor photoluminescence imaging of photovoltaic arrays via optical string modulation19 May 2026US 12,633,872 B2NewSouth Innovations Pty Limited
- Method for suppressing variation in light emission intensity of background in photoluminescence measurement, and evaluation method for semiconductor substrate8 Oct 2026US 2026/0309625 A1Kwansei Gakuin Educational Foundation
- Illumination line generation by double-duty diffusion1 Oct 2026US 2026/0299175 A1Cognex Corporation
- Inspection device17 Sep 2026US 2026/0276549 A1Kware Systems Co., Ltd.
- Single crystal diamond30 Jul 2026US 2026/0218413 A1Element Six Technologies Limited
- Photoluminescence imaging inspection system for multi-junction solar cells23 Jul 2026US 2026/0210862 A1Livestrong Optoelectronics Co., Ltd.
Most cited
By later US patents
- Apparatus and method for method for spatially- and spectrally-resolved measurements233US 5,192,980 A1993
- Nanocrystal taggants82US 7,917,298 B1Nanosys, Inc. · 2011
- Method for separating single-wall carbon nanotubes and compositions thereof76US 7,074,310 B2William Marsh Rice University · 2006
- Magnetic write head characterization with nano-meter resolution using nitrogen vacancy color centers67US 8,885,301 B1Infinitum Solutions, Inc. · 2014
- Efficient fluorescence detection in solid state spin systems63US 9,157,859 B2President and Fellows of Harvard College · 2015