Compositions and methods for producing electrically conductive coordination polymers and uses thereof
US-2024018310-A1 · Jan 18, 2024 · US
Nitrogen-containing compounds
Nitrogen-containing 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 | C08K3/28 |
| Official title | Nitrogen-containing compounds |
| Display label | Nitrogen-containing compounds |
| Total patents | 884 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 50 |
| 2016 | 67 |
| 2017 | 73 |
| 2018 | 83 |
| 2019 | 84 |
| 2020 | 103 |
| 2021 | 82 |
| 2022 | 86 |
| 2023 | 108 |
| 2024 | 69 |
| 2025 | 66 |
| 2026 | 13 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method of encapsulating a phase change material with a metal oxide
US-9493695-B2 · Nov 15, 2016 · US
Coating composition, coating method, air conditioner, ventilation fan, and electrical equipment
US-9481802-B2 · Nov 1, 2016 · US
Oil and gas recovery articles
US-2016312000-A1 · Oct 27, 2016 · US
Thermally conductive sheet
US-9437521-B2 · Sep 6, 2016 · US
Methods of preparing metal nanodendrimer structures
US-2016215107-A1 · Jul 28, 2016 · US
Thermally conductive sheet
US-2016118316-A1 · Apr 28, 2016 · US
Black resin composition, resin black matrix substrate, and touch panel
US-9261633-B2 · Feb 16, 2016 · US
Aldehyde scavengers and methods for making and using same
US-2016040006-A1 · Feb 11, 2016 · US
Thermally conductive sheet
US-2016009963-A1 · Jan 14, 2016 · US
Thermally conductive compositions and cables thereof
US-2015376369-A1 · Dec 31, 2015 · US
Resin composition and method for producing same, and highly thermally conductive resin molded article
US-2015368435-A1 · Dec 24, 2015 · US
Impregnating resin for an electrical insulation body, electrical insulation body, and method for producing the electrical insulation body
US-2015361245-A1 · Dec 17, 2015 · US
Aluminum nitride powders
US-2015353355-A1 · Dec 10, 2015 · US
Compositions comprising free-standing two-dimensional nanocrystals
US-9193595-B2 · Nov 24, 2015 · US
Separation membrane for treating gas containing acidic gas and method for producing same, method for separating acidic gas or methane gas, and method for producing acidic gas or methane gas
US-2015321150-A1 · Nov 12, 2015 · US
Conductive microparticles
US-2015318067-A1 · Nov 5, 2015 · US
Epoxy resin composition, and printed circuit board using same
US-2015319857-A1 · Nov 5, 2015 · US
High solids aqueous mineral and/or filler and/or pigment suspension in acidic ph environment
US-2015315366-A1 · Nov 5, 2015 · US
Fire-resistant cellulosic material
US-9175147-B2 · Nov 3, 2015 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C08K3/28?
- CPC C08K3/28 is the Cooperative Patent Classification code for “Nitrogen-containing compounds.”
- How many patents are filed under CPC C08K3/28 (Nitrogen-containing compounds)?
- Our database includes 884 publications tagged with this CPC code.
- Is patent activity under CPC C08K3/28 growing?
- Publication counts under this code: 69 in 2024 vs 66 in 2025 (latest complete years).