C09B 23/0091
Methine or polymethine dyes: having only one heterocyclic ring at one end
Official title: {having only one heterocyclic ring at one end of the methine chain, e.g. hemicyamines, hemioxonol (styryl dyes see C09B23/14)}
C09B23/0091 (Methine or polymethine dyes: having only one heterocyclic ring at one end) appears on 160 US grants and 92 published applications in this corpus.
Search patents in C09B- Granted patents
- 160
- Published applications
- 92
- Assignees
- 63
- Inventors
- 381
- Latest grant
- 19 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 3 | 0 |
| 1980 | 0 | 0 |
| 1981 | 4 | 0 |
| 1982 | 1 | 0 |
| 1983 | 4 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 3 | 0 |
| 1987 | 0 | 0 |
| 1988 | 4 | 0 |
| 1989 | 6 | 0 |
| 1990 | 8 | 0 |
| 1991 | 6 | 0 |
| 1992 | 7 | 0 |
| 1993 | 6 | 0 |
| 1994 | 5 | 0 |
| 1995 | 7 | 0 |
| 1996 | 2 | 0 |
| 1997 | 5 | 0 |
| 1998 | 4 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 0 |
| 2002 | 4 | 9 |
| 2003 | 5 | 10 |
| 2004 | 4 | 2 |
| 2005 | 3 | 3 |
| 2006 | 2 | 2 |
| 2007 | 0 | 3 |
| 2008 | 1 | 3 |
| 2009 | 4 | 11 |
| 2010 | 6 | 10 |
| 2011 | 7 | 6 |
| 2012 | 10 | 3 |
| 2013 | 5 | 6 |
| 2014 | 5 | 3 |
| 2015 | 1 | 3 |
| 2016 | 4 | 2 |
| 2017 | 2 | 2 |
| 2018 | 1 | 0 |
| 2019 | 1 | 4 |
| 2020 | 0 | 2 |
| 2021 | 3 | 0 |
| 2022 | 2 | 2 |
| 2023 | 1 | 3 |
| 2024 | 0 | 0 |
| 2025 | 1 | 1 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Color matched and bright fluorescent materials composed of small-molecule ionic lattices19 Aug 2025US 12,391,832 B2Indiana University Research and Technology Corporation
- Heat sensitive transfer recording sheet31 Oct 2023US 11,801,703 B2Canon Kabushiki Kaisha
- Fluorescent dye and preparation method and use thereof21 Jun 2022US 11,365,203 B2Fluorescence Diagnosis (Shanghai) Biotech Company
- Merocyanine-based compound and biomolecular labeling dye, kit and contrast agent composition comprising same5 Apr 2022US 11,292,798 B2Sfc Co., Ltd.
- Hemicyanine dyes30 Nov 2021US 11,186,719 B2LI-COR, Inc.
- Chromophores with New Ring-Locked Donors that Increase r33 and Stability26 Mar 2026US 2026/0085189 A1Lightwave Logic, Inc.
- Chromophores with New Acceptors that Increase Refractive Index26 Mar 2026US 2026/0085190 A1Lightwave Logic, Inc.
- Chromophore and method for preparing chromophore, and organic electro-optic material and application of organic electro-optic material9 Jan 2025US 2025/0011312 A1
- Rapid prototyping and deployment of fluorescent medical devices20 Jul 2023US 2023/0227668 A1Endoglow Prime, LLC
- Color matched and bright fluorescent materials composed of small-molecule ionic lattices1 Jun 2023US 2023/0167303 A1University of Copenhagen
Most cited
By later US patents
- Chromophore-substituted vinyl-halomethyl-s-triazines98US 3,987,037 AMinnesota Mining and Manufacturing Company · 1976
- Solid particle dispersion filter dyes for photographic compositions59US 4,940,654 AEastman Kodak Company · 1990
- Class of high hyperpolarizability organic chromophores and process for synthesizing the same55US 6,067,186 APacific Wave Industries, Inc. · 2000
- Sterically stabilized polyene-bridged second-order nonlinear optical chromophores and devices incorporating the same39US 6,348,992 B1Pacific Wave Industries, Inc. · 2002
- Sterically stabilized second-order nonlinear optical chromophores and devices incorporating the same32US 6,361,717 B1Pacific Wave Industries, Inc. · 2002