Process for synthesizing azo compounds
US-11655209-B2 · May 23, 2023 · US
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with the nitrogen atoms further bound to nitrogen atoms
with the nitrogen atoms further bound to nitrogen atoms · 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 | C07C255/65 |
| Official title | with the nitrogen atoms further bound to nitrogen atoms |
| Display label | with the nitrogen atoms further bound to nitrogen atoms |
| Total patents | 13 |
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 | 1 |
| 2016 | 2 |
| 2017 | 3 |
| 2018 | 3 |
| 2019 | 1 |
| 2020 | 2 |
| 2023 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Process for synthesizing azo compounds
US-2020407312-A1 · Dec 31, 2020 · US
Chromophores for photochromic compositions useful for three dimensional display applications
US-10752780-B2 · Aug 25, 2020 · US
Process for the preparation of organic bromides
US-10399917-B2 · Sep 3, 2019 · US
Chromophores for photochromic compositions useful for three dimensional display applications
US-2018291207-A1 · Oct 11, 2018 · US
Process for the preparation of organic bromides
US-2018273450-A1 · Sep 27, 2018 · US
Chromophores for photochromic compositions useful for three dimensional display applications
US-10077362-B2 · Sep 18, 2018 · US
Azo compound, ink containing azo compound, and display and electronic paper containing the ink
US-9732226-B2 · Aug 15, 2017 · US
Chromophores for photochromic compositions useful for three dimensional display applications
US-2017044373-A1 · Feb 16, 2017 · US
Nitrification inhibitors
US-2017036969-A1 · Feb 9, 2017 · US
Surface-modified pigment preparations
US-9346963-B2 · May 24, 2016 · US
Method of synthesis of azo compounds
US-9227926-B2 · Jan 5, 2016 · US
Azo compound, ink containing azo compound, and display and electronic paper containing the ink
US-2015191601-A1 · Jul 9, 2015 · US