C09K 9/00
Tenebrescent materials, i.e. materials for which the range of wavelengths for energy
Official title: Tenebrescent materials, i.e. materials for which the range of wavelengths for energy absorption is changed as a result of excitation by some form of energy
C09K9/00 (Tenebrescent materials, i.e. materials for which the range of wavelengths for energy) appears on 1,298 US grants and 1,240 published applications in this corpus.
Search patents in C09K- Granted patents
- 1,298
- Published applications
- 1,240
- Assignees
- 585
- Inventors
- 2,614
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 10 | 0 |
| 1978 | 10 | 0 |
| 1979 | 7 | 0 |
| 1980 | 4 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 2 | 0 |
| 1985 | 8 | 0 |
| 1986 | 3 | 0 |
| 1987 | 7 | 0 |
| 1988 | 8 | 0 |
| 1989 | 19 | 0 |
| 1990 | 10 | 0 |
| 1991 | 13 | 0 |
| 1992 | 22 | 0 |
| 1993 | 23 | 0 |
| 1994 | 22 | 0 |
| 1995 | 18 | 0 |
| 1996 | 19 | 0 |
| 1997 | 12 | 0 |
| 1998 | 21 | 0 |
| 1999 | 25 | 0 |
| 2000 | 28 | 0 |
| 2001 | 38 | 7 |
| 2002 | 33 | 38 |
| 2003 | 38 | 49 |
| 2004 | 28 | 38 |
| 2005 | 20 | 27 |
| 2006 | 23 | 31 |
| 2007 | 24 | 37 |
| 2008 | 22 | 40 |
| 2009 | 31 | 45 |
| 2010 | 36 | 49 |
| 2011 | 22 | 50 |
| 2012 | 44 | 51 |
| 2013 | 48 | 40 |
| 2014 | 36 | 56 |
| 2015 | 37 | 41 |
| 2016 | 48 | 61 |
| 2017 | 46 | 60 |
| 2018 | 44 | 57 |
| 2019 | 43 | 79 |
| 2020 | 40 | 71 |
| 2021 | 59 | 58 |
| 2022 | 50 | 66 |
| 2023 | 43 | 70 |
| 2024 | 55 | 52 |
| 2025 | 52 | 43 |
| 2026 | 36 | 24 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Rapidly reversible and wavelength-tunable photochromic compositions, systems, and methods6 Oct 2026US 12,754,443 B1HRL Laboratories, LLC
- Phase-changing polymer film for thermochromic smart windows applications29 Sep 2026US 12,747,387 B2The Regents of the University of California
- Color changing materials arranged in slow particle coloration materials29 Sep 2026US 12,748,301 B2adidas AG
- Polymerizable composition for optical article and optical article22 Sep 2026US 12,742,113 B2Hoya Lens Thailand Ltd.
- Electrochromic composition, anti-peep film, and display device22 Sep 2026US 12,742,989 B2Tcl China Star Optoelectronics Technology Co., Ltd.
- Electrochromic devices containing Dyes with donor-acceptor structure8 Oct 2026US 2026/0308444 A1Glass Dyenamics, Inc.
- Electrochromic Devices and Compositions Including Anodic Component Anions1 Oct 2026US 2026/0297043 A1Vitro Flat Glass LLC
- Photochromic compound, naphthol derivative, curable composition, optical article, lens, and eyeglass1 Oct 2026US 2026/0297421 A1Tokuyama Corporation
- Photochromic compound, propargyl alcohol compound, curable composition, optical article, lens, and spectacles24 Sep 2026US 2026/0286216 A1Tokuyama Corporation
- Indenonaphthopyrans Having Perfluoroalkyl Substituted Aryl / Heteroaryl Sulfide at Position-1124 Sep 2026US 2026/0286217 A1Transitions Optical, Inc.
Most cited
By later US patents
- Stable conjugated polymer electrochromic devices incorporating ionic liquids1,453US 6,667,825 B2Santa Fe Science and Technology, Inc. · 2003
- Electrochromic polymeric solid films, manufacturing electrochromic devices using such solid films, and processes for making such solid films and devices701US 5,910,854 ADonnelly Corporation · 1999
- High performance electrochemichromic solutions and devices thereof669US 5,140,455 ADonnelly Corporation · 1992
- Method for reducing current leakage and enhancing UV stability in electrochemichromic solutions and devices652US 5,151,816 ADonnelly Corporation · 1992
- Method of reducing leakage current in electrochemichromic solutions and solutions based thereon631US 5,142,407 ADonnelly Corporation · 1992