C01G 21/00
Compounds of lead
C01G21/00 (Compounds of lead) appears on 317 US grants and 321 published applications in this corpus.
Search patents in C01G- Granted patents
- 317
- Published applications
- 321
- Assignees
- 288
- Inventors
- 970
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 4 | 0 |
| 1978 | 4 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 7 | 0 |
| 1982 | 4 | 0 |
| 1983 | 6 | 0 |
| 1984 | 4 | 0 |
| 1985 | 7 | 0 |
| 1986 | 2 | 0 |
| 1987 | 7 | 0 |
| 1988 | 4 | 0 |
| 1989 | 6 | 0 |
| 1990 | 6 | 0 |
| 1991 | 4 | 0 |
| 1992 | 1 | 0 |
| 1993 | 7 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 4 | 0 |
| 1997 | 4 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 4 |
| 2003 | 5 | 6 |
| 2004 | 4 | 8 |
| 2005 | 3 | 8 |
| 2006 | 4 | 11 |
| 2007 | 6 | 6 |
| 2008 | 4 | 11 |
| 2009 | 8 | 3 |
| 2010 | 6 | 14 |
| 2011 | 5 | 9 |
| 2012 | 11 | 10 |
| 2013 | 7 | 7 |
| 2014 | 10 | 8 |
| 2015 | 8 | 6 |
| 2016 | 5 | 10 |
| 2017 | 4 | 12 |
| 2018 | 7 | 18 |
| 2019 | 6 | 22 |
| 2020 | 15 | 23 |
| 2021 | 25 | 30 |
| 2022 | 21 | 27 |
| 2023 | 17 | 21 |
| 2024 | 15 | 17 |
| 2025 | 15 | 16 |
| 2026 | 10 | 14 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C01G 21/006Compounds containing lead, with or without oxygen or hydrogen, and containing two80
- C01G 21/02Oxides70
- C01G 21/21Sulfides59
- C01G 21/16Halides42
- C01G 21/003Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange20
- C01G 21/20Sulfates18
- C01G 21/14Carbonates15
- C01G 21/22Plumbates9
All 10 subgroupsShow fewer
Recent patents
- Systems and methods for direct oxide production29 Sep 2026US 12,747,511 B2Aqua Metals Inc.
- Lead sulfide nanocrystals, preparation method and uses therof25 Aug 2026US 12,715,780 B2Quantum Science Ltd
- Method for producing high-purity cesium halide, and perovskite composite material11 Aug 2026US 12,703,640 B2Hanwha Solutions Corporation
- Methods of growing large crystals of all-inorganic and hybrid organic-inorganic cesium lead bromide perovskites from solution23 Jun 2026US 12,662,391 B2Northwestern University
- Method of fabricating a halide perovskite26 May 2026US 12,641,909 B2City University of Hong Kong
- Methods of growing large crystals of all-inorganic and hybrid organic-inorganic cesium lead bromide perovskites from solution17 Sep 2026US 2026/0274703 A1Northwestern University
- Perovskite-type compound and photoelectric conversion element27 Aug 2026US 2026/0250145 A1Idemitsu Kosan Co., Ltd.
- Method for producing photoresponsive nanoparticle with perovskite-type crystalline structure21 May 2026US 2026/0138881 A1Canon Kabushiki Kaisha
- Particle Comprising Perovskite Core21 May 2026US 2026/0139185 A1
- Lead decahydroxydecaborate dihydroxy monoborate monohydrate nonlinear optical crystal, preparation method and application thereof21 May 2026US 2026/0139403 A1Xinjiang Normal University
Most cited
By later US patents
- Method of making lithium-containing materials123US 6,528,033 B1Valence Technology, Inc. · 2003
- 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