C09K 11/641
Chalcogenides
Official title: {Chalcogenides}
C09K11/641 (Chalcogenides) appears on 273 US grants and 288 published applications in this corpus.
Search patents in C09K- Granted patents
- 273
- Published applications
- 288
- Assignees
- 175
- Inventors
- 775
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 3 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 4 | 0 |
| 1990 | 4 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 7 | 0 |
| 1998 | 3 | 0 |
| 1999 | 5 | 0 |
| 2000 | 13 | 0 |
| 2001 | 9 | 5 |
| 2002 | 6 | 9 |
| 2003 | 11 | 7 |
| 2004 | 9 | 15 |
| 2005 | 7 | 21 |
| 2006 | 13 | 23 |
| 2007 | 4 | 30 |
| 2008 | 11 | 19 |
| 2009 | 15 | 23 |
| 2010 | 16 | 11 |
| 2011 | 13 | 7 |
| 2012 | 12 | 6 |
| 2013 | 4 | 7 |
| 2014 | 6 | 2 |
| 2015 | 1 | 8 |
| 2016 | 4 | 8 |
| 2017 | 7 | 11 |
| 2018 | 7 | 8 |
| 2019 | 11 | 18 |
| 2020 | 5 | 10 |
| 2021 | 12 | 10 |
| 2022 | 5 | 3 |
| 2023 | 8 | 9 |
| 2024 | 2 | 9 |
| 2025 | 4 | 5 |
| 2026 | 4 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Lighting apparatus14 Jul 2026US 12,680,664 B2Nichia Corporation
- Europium activating beta-type sialon phosphor, and light-emitting device30 Jun 2026US 12,668,741 B2Denka Company Limited
- Polymer, quantum dot composition and light-emitting device employing the same14 Apr 2026US 12,604,655 B2Industrial Technology Research Institute
- Light emitting device13 Jan 2026US 12,527,132 B2Nichia Corporation
- Light emitting nanocrystals and methods of making light emitting nanocrystals14 Oct 2025US 12,441,939 B2Massachusetts Institute of Technology
- A method for producing a doped aluminous material20 Aug 2026US 2026/0242232 A1Lava Blue Ltd
- Light emitting device9 Apr 2026US 2026/0101615 A1Nichia Corporation
- Light emitting nanocrystals and methods of making light emitting nanocrystals5 Feb 2026US 2026/0035615 A1Massachusetts Institute of Technology
- Apparatus and method for growth of gallium oxide crystal doped with alumina5 Feb 2026US 2026/0035830 A1Luxium Solutions, LLC
- More efficient photoluminescent material26 Jun 2025US 2025/0207018 A1The Swatch Group Research and Development Ltd
Most cited
By later US patents
- Lighting system590US 6,234,648 B1U. S. Philips Corporation · 2001
- Light-emitting device having light-reflective layer formed with, or/and adjacent to, material that enhances device performance211US 6,630,786 B2Candescent Intellectual Property Services, Inc. · 2003
- Oxygen-containing phosphor powders, methods for making phosphor powders and devices incorporating same135US 6,180,029 B2Superior MicroPowders LLC · 2001
- Sulfur-containing phosphor powders, methods for making phosphor powders and devices incorporating same110US 6,153,123 ASuperior MicroPowders LLC · 2000
- Aerosol method and apparatus, particulate products, and electronic devices made therefrom76US 6,338,809 B12002