Ink set, ink cartridge, ink jet printer, and ink jet recording method
US-2020216701-A1 · Jul 9, 2020 · US
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Heterocyclic compounds
Heterocyclic compounds · 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 | C09B31/28 |
| Official title | Heterocyclic compounds |
| Display label | Heterocyclic compounds |
| Total patents | 11 |
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 | 5 |
| 2016 | 3 |
| 2017 | 1 |
| 2019 | 1 |
| 2020 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Color polarizing film, antireflective film and display device
US-10324333-B2 · Jun 18, 2019 · US
Color polarizing film, antireflective film and display device
US-2017242296-A1 · Aug 24, 2017 · US
Benefit agent delivery compositions
US-2016137956-A1 · May 19, 2016 · US
Polarizing film and display device including the polarizing film
US-9335442-B1 · May 10, 2016 · US
Composition for polarizing film, polarizing film, and display device including the polarizing film
US-9268065-B1 · Feb 23, 2016 · US
Polarizing film and display device including the polarizing film
US-9207359-B2 · Dec 8, 2015 · US
Polarizing film and display device including the polarizing film
US-9194980-B2 · Nov 24, 2015 · US
Black dichroic dye
US-9057020-B2 · Jun 16, 2015 · US
Azo dyes
US-9023118-B2 · May 5, 2015 · US
Dichroic dye composition, light absorption anisotropic film, and polarizing element
US-8927070-B2 · Jan 6, 2015 · US