Composition for wet indicator and wet indicator
US-2024366827-A1 · Nov 7, 2024 · US
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Esters or ester-salts of leuco compounds of vat dyestuffs
Esters or ester-salts of leuco compounds of vat dyestuffs · 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 | C09B9/00 |
| Official title | Esters or ester-salts of leuco compounds of vat dyestuffs |
| Display label | Esters or ester-salts of leuco compounds of vat dyestuffs |
| Total patents | 21 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2018 | 3 |
| 2019 | 2 |
| 2020 | 4 |
| 2021 | 2 |
| 2022 | 4 |
| 2023 | 2 |
| 2024 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Temperature detecting material, temperature detecting ink using same, temperature indicator, and product control system
US-11933677-B2 · Mar 19, 2024 · US
Method of preparing electric and temperature dual-control bi-stable color-changing dyes and microcapsules
US-11655373-B2 · May 23, 2023 · US
Thermal marking of 3D printed objects
US-11565462-B2 · Jan 31, 2023 · US
Electronic device housings
US-11441040-B2 · Sep 13, 2022 · US
Leuco compounds and compositions comprising the same
US-11345819-B2 · May 31, 2022 · US
Aerosol-generating article comprising a thermal indicator
US-11330835-B2 · May 17, 2022 · US
Thermal marking of 3d printed objects
US-2022072762-A1 · Mar 10, 2022 · US
Method of Preparing Electric and Temperature Dual-control Bi-stable Color-changing Dyes and Microcapsules
US-2021363355-A1 · Nov 25, 2021 · US
Electronic device housings
US-2021122929-A1 · Apr 29, 2021 · US
Aerosol-generating article comprising a thermal indicator
US-2020268039-A1 · Aug 27, 2020 · US
Article with a color-tuning layer
US-2020270515-A1 · Aug 27, 2020 · US
Leuco colorants and compositions
US-10717874-B2 · Jul 21, 2020 · US
Temperature Detecting Material, Temperature Detecting Ink Using Same, Temperature Indicator, and Product Control System
US-2020041359-A1 · Feb 6, 2020 · US
Leuco compounds and compositions comprising the same
US-2019177545-A1 · Jun 13, 2019 · US
Leuco colorants and compositions
US-2019177544-A1 · Jun 13, 2019 · US
Methods of using leuco colorants as bluing agents in laundry care compositions
US-2018119068-A1 · May 3, 2018 · US
Reactive leuco compounds and compositions comprising the same
US-2018119069-A1 · May 3, 2018 · US
System and method for autogenerating simulations for process control system checkout and operator training
US-9904746-B2 · Feb 27, 2018 · US
System and method for autogenerating simulations for process control system checkout and operator training
US-2015178422-A1 · Jun 25, 2015 · US