C09B 11/26
Triarylmethane dyes in which at least one of the aromatic nuclei is
Official title: Triarylmethane dyes in which at least one of the aromatic nuclei is heterocyclic {(phthaleins C09B11/24)}
C09B11/26 (Triarylmethane dyes in which at least one of the aromatic nuclei is) appears on 130 US grants and 76 published applications in this corpus.
Search patents in C09B- Granted patents
- 130
- Published applications
- 76
- Assignees
- 64
- Inventors
- 210
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 8 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 4 | 0 |
| 1981 | 6 | 0 |
| 1982 | 5 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 4 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 3 | 0 |
| 1993 | 3 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 2 |
| 2004 | 1 | 7 |
| 2005 | 1 | 0 |
| 2006 | 1 | 0 |
| 2007 | 4 | 2 |
| 2008 | 0 | 0 |
| 2009 | 3 | 4 |
| 2010 | 0 | 0 |
| 2011 | 0 | 2 |
| 2012 | 1 | 6 |
| 2013 | 3 | 4 |
| 2014 | 2 | 3 |
| 2015 | 5 | 5 |
| 2016 | 3 | 7 |
| 2017 | 6 | 1 |
| 2018 | 4 | 8 |
| 2019 | 1 | 4 |
| 2020 | 8 | 2 |
| 2021 | 2 | 6 |
| 2022 | 3 | 2 |
| 2023 | 1 | 2 |
| 2024 | 4 | 3 |
| 2025 | 3 | 5 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Composition, optically anisotropic layer, liquid crystal cell, liquid crystal display device, sensor, lens, switching element, isolator, and camera21 Apr 2026US 12,606,746 B2FUJIFILM Corporation
- Ultra bright dimeric or polymeric dyes with spacing linker groups24 Feb 2026US 12,560,612 B2Sony Group Corporation
- Ultra bright dimeric or polymeric dyes with spacing linker groups4 Nov 2025US 12,461,106 B2Sony Group Corporation
- Process and apparatus for locally polymerizing a starting material by dual color photopolymerization and method for volumetric printing of a shaped body13 May 2025US 12,296,531 B2xolo GmbH
- Ultra bright dimeric or polymeric dyes with spacing linker groups8 Apr 2025US 12,270,812 B2Sony Group Corporation
- Photochromic compound, photochromic composition, photochromic article and spectacles13 Aug 2026US 2026/0234119 A1Hoya Lens Thailand Ltd.
- Composition comprising naphthopyran photoswitchable photoinitiators and thiols for locally polymerizing a starting material by dual color photopolymerization5 Jun 2025US 2025/0179222 A1xolo GmbH
- Naphthopyran photoswitchable photoinitiators for locally polymerizing a starting material by dual color photopolymerization5 Jun 2025US 2025/0179306 A1xolo GmbH
- Photoinitiators, compositions, and methods of forming an object27 Feb 2025US 2025/0066584 A1Quadratic 3D, Inc.
- Photoinitiators, compositions, and methods of forming an object27 Feb 2025US 2025/0066585 A1Quadratic 3D, Inc.
Most cited
By later US patents
- Photochromic indeno-fused naphthopyrans245US 5,645,767 ATransitions Optical, Inc. · 1997
- Novel ether substituted fluorescein polyamino acid compounds as fluorescers and quenchers186US 4,318,846 ASyva Company · 1982
- Photochromic heterocyclic fused indenonaphthopyrans139US 5,698,141 APPG Industries, Inc. · 1997
- Photochromic heterocyclic fused indenonaphthopyrans102US 5,723,072 APPG Industries, Inc. · 1998
- Photochromic naphtopyrane colorants, method for the production and use thereof, photochromic object56US 6,146,554 AOptische Werke G. Rodenstock · 2000