Crosslinkable composition
US-9834701-B2 · Dec 5, 2017 · US
Urea; Derivatives thereof, e.g. biuret
Urea; Derivatives thereof, e.g. biuret · 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 | C08K5/21 |
| Official title | Urea; Derivatives thereof, e.g. biuret |
| Display label | Urea; Derivatives thereof, e.g. biuret |
| Total patents | 360 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 22 |
| 2016 | 21 |
| 2017 | 21 |
| 2018 | 27 |
| 2019 | 33 |
| 2020 | 46 |
| 2021 | 40 |
| 2022 | 40 |
| 2023 | 37 |
| 2024 | 37 |
| 2025 | 27 |
| 2026 | 9 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Epoxy Resin Composition for Fiber-Reinforced Composite Material, Method for Producing Epoxy Resin Composition for Fiber-Reinforced Composite Material, Prepreg, and Honey-Comb Panel
US-2017292023-A1 · Oct 12, 2017 · US
Double-sided adhesive tape
US-9783704-B2 · Oct 10, 2017 · US
Non-skid, textured protective coating compositions for vehicle surfaces
US-2017275488-A1 · Sep 28, 2017 · US
Photo-curable adhesive composition, preparation and use thereof
US-2017253780-A1 · Sep 7, 2017 · US
Composition for rheology control
US-2017240748-A9 · Aug 24, 2017 · US
Black ink composition, ink set, and image forming method
US-9714356-B2 · Jul 25, 2017 · US
Hydroxy functional alkyl polyurea
US-2017204289-A1 · Jul 20, 2017 · US
Binder composition for making foundry molds
US-9636742-B2 · May 2, 2017 · US
Intermediate polyisocyanurate comprising materials
US-9631043-B2 · Apr 25, 2017 · US
Resin composition and gate insulating film
US-9617408-B2 · Apr 11, 2017 · US
Clearcoat coating composition, method for production and use
US-9617448-B2 · Apr 11, 2017 · US
Preparation having a low phenol content on the basis of thermoplastic polyurethane
US-2017096546-A1 · Apr 6, 2017 · US
Emulsified electrorheological ink for indirect printing
US-9605166-B2 · Mar 28, 2017 · US
Low solids coating compositions having polyurea rheology control agents, methods for making such coating compositions, and systems for making such coating compositions
US-9605164-B2 · Mar 28, 2017 · US
Co-crosslinker systems for encapsulation films comprising urea compounds
US-9587061-B2 · Mar 7, 2017 · US
Composition for rheology control
US-2017044378-A1 · Feb 16, 2017 · US
Polarizing plate composition, polarizing plate protective film, polarizer, polarizing plate, and liquid crystal display device
US-2016370523-A1 · Dec 22, 2016 · US
Gemini surfactants and methods for their preparation and use
US-2016368865-A1 · Dec 22, 2016 · US
Tyre, the tread of which comprises a heat-expandable rubber composition reducing noise during travel
US-9505897-B2 · Nov 29, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C08K5/21?
- CPC C08K5/21 is the Cooperative Patent Classification code for “Urea; Derivatives thereof, e.g. biuret.”
- How many patents are filed under CPC C08K5/21 (Urea; Derivatives thereof, e.g. biuret)?
- Our database includes 360 publications tagged with this CPC code.
- Is patent activity under CPC C08K5/21 growing?
- Publication counts under this code: 37 in 2024 vs 27 in 2025 (latest complete years).