C01G 21/21
Sulfides
C01G21/21 (Sulfides) appears on 59 US grants and 69 published applications in this corpus.
Search patents in C01G- Granted patents
- 59
- Published applications
- 69
- Assignees
- 58
- Inventors
- 170
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 3 |
| 2004 | 1 | 2 |
| 2005 | 1 | 3 |
| 2006 | 0 | 5 |
| 2007 | 3 | 5 |
| 2008 | 1 | 1 |
| 2009 | 4 | 2 |
| 2010 | 3 | 5 |
| 2011 | 2 | 5 |
| 2012 | 4 | 2 |
| 2013 | 2 | 2 |
| 2014 | 6 | 3 |
| 2015 | 3 | 2 |
| 2016 | 3 | 3 |
| 2017 | 2 | 4 |
| 2018 | 1 | 5 |
| 2019 | 2 | 3 |
| 2020 | 3 | 3 |
| 2021 | 3 | 2 |
| 2022 | 3 | 5 |
| 2023 | 4 | 2 |
| 2024 | 0 | 0 |
| 2025 | 3 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Lead sulfide nanocrystals, preparation method and uses therof25 Aug 2026US 12,715,780 B2Quantum Science Ltd
- Methods for obtaining an n-type doped metal chalcogenide quantum dot solid-state element with optical gain and a light emitter including the element, and the obtained element and light emitter1 Jul 2025US 12,344,783 B2Fundació Institut De CièNcies FotòNiques
- Photoactive, inorganic ligand-capped inorganic nanocrystals1 Apr 2025US 12,265,328 B2The University of Chicago
- Electronic element with nanomaterial and manufacturing method thereof28 Jan 2025US 12,209,213 B2Research & Business Foundation Sungkyunkwan University
- Passivation of nanocrystals tailored to different facets, and its application to optoelectronic devices19 Dec 2023US 11,846,041 B2Qd Solar Inc.
- Method for preparing mid-infrared focal plane detector based on sn-doped pbse quantum dots26 Mar 2026US 2026/0090178 A1Sun Yat-Sen University
- Precursor Composition and Method of Preparation Thereof, Inorganic Nanocrystals Preparation Method1 May 2025US 2025/0136864 A1Najing Technology Corporation Limited
- Lead sulfide nanocrystals, preparation method and uses therof30 Nov 2023US 2023/0382757 A1Quantum Science Ltd
- Photoactive, inorganic ligand-capped inorganic nanocrystals26 Oct 2023US 2023/0341770 A1The University of Chicago
- Methods for obtaining an n-type doped metal chalcogenide quantum dot solid-state element with optical gain and a light emitter including the element, and the obtained element and light emitter28 Jul 2022US 2022/0235263 A1Fundació Institut De CièNcies FotòNiques
Most cited
By later US patents
- Stabilized semiconductor nanocrystals110US 7,160,613 B2Massachusetts Institute of Technology · 2007
- III-V semiconductor nanocrystal complexes and methods of making same89US 7,399,429 B2Evident Technologies · 2008
- Semiconductor nanocrystal complexes comprising a metal coating and methods of making same78US 7,482,059 B2Evident Technologies · 2009
- Making particles of uniform size75US 5,906,670 AIsis Innovation Limited · 1999
- Passivated nanoparticles, method of fabrication thereof, and devices incorporating nanoparticles24US 6,906,339 B2Rensselaer Polytechnic Institute · 2005