Whitening agents for cellulosic substrates
US-10155868-B2 · Dec 18, 2018 · US
Mixtures of two or more azo dyes
Mixtures of two or more azo dyes · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C09B67/0046 |
| Official title | {Mixtures of two or more azo dyes} |
| Display label | Mixtures of two or more azo dyes |
| Total patents | 102 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 12 |
| 2016 | 20 |
| 2017 | 14 |
| 2018 | 14 |
| 2019 | 14 |
| 2020 | 11 |
| 2021 | 8 |
| 2022 | 3 |
| 2023 | 2 |
| 2024 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Achromatic polarizing plate with high-transmissivity and high-degree of polarization
US-10126468-B2 · Nov 13, 2018 · US
Pigment composition production method
US-2018305553-A1 · Oct 25, 2018 · US
Compound having azo skeleton, pigment dispersant, pigment composition, pigment dispersion, and toner
US-10087328-B2 · Oct 2, 2018 · US
Yellow toner
US-10088768-B2 · Oct 2, 2018 · US
Disperse azo dyes, a process for the preparation thereof and the use thereof
US-10023742-B2 · Jul 17, 2018 · US
Dye-based polarizer as well as polarizing plate and liquid crystal display device using the polarizer
US-10007142-B2 · Jun 26, 2018 · US
Novel epoxy resin system for making carbon fiber composites
US-2018162990-A1 · Jun 14, 2018 · US
Whitening agents for cellulosic substrates
US-9976035-B2 · May 22, 2018 · US
Yellow toner
US-9964884-B1 · May 8, 2018 · US
Yellow toner
US-2018120723-A1 · May 3, 2018 · US
Compound having azo skeleton structure, pigment-dispersing agent, pigment composition, pigment dispersion, and toner
US-9926450-B2 · Mar 27, 2018 · US
Dye-based polarizer as well as polarizing plate and liquid crystal display device using the polarizer
US-2018074371-A1 · Mar 15, 2018 · US
Yellow toner
US-2018066138-A1 · Mar 8, 2018 · US
Compound having azo skeleton structure, pigment dispersant, pigment composition, pigment dispersion, and toner
US-9834683-B2 · Dec 5, 2017 · US
C.i. pigment yellow 155 and process for preparing the same, pigment composition and colorant composition containing the pigment, and use thereof as colorant
US-2017313884-A1 · Nov 2, 2017 · US
Whitening agents for cellulosic substrates
US-9777250-B2 · Oct 3, 2017 · US
Color polarizing film, antireflective film and display device
US-2017242296-A1 · Aug 24, 2017 · US
Method of producing a compound having a colorant structure, and toner containing a compound obtained by the production method
US-9715187-B2 · Jul 25, 2017 · US
Achromatic Polarizing Plate With High-Transmissivity And High-Degree Of Polarization
US-2017153361-A1 · Jun 1, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C09B67/0046?
- CPC C09B67/0046 is the Cooperative Patent Classification code for “Mixtures of two or more azo dyes.”
- How many patents are filed under CPC C09B67/0046 (Mixtures of two or more azo dyes)?
- Our database includes 102 publications tagged with this CPC code.
- Is patent activity under CPC C09B67/0046 growing?
- Publication counts under this code: 2 in 2023 vs 4 in 2024 (latest complete years).