Flame-retardant aconitic acid-derived small molecules
US-2018346688-A1 · Dec 6, 2018 · US
Phosphorus bound to oxygen
Phosphorus bound to oxygen · 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 | C08K5/51 |
| Official title | Phosphorus bound to oxygen |
| Display label | Phosphorus bound to oxygen |
| Total patents | 151 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 24 |
| 2016 | 11 |
| 2017 | 15 |
| 2018 | 18 |
| 2019 | 15 |
| 2020 | 19 |
| 2021 | 9 |
| 2022 | 17 |
| 2023 | 8 |
| 2024 | 10 |
| 2025 | 4 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Biocompatible hydrophilic compositions
US-10138576-B2 · Nov 27, 2018 · US
Polymer emulsion as binder for conductive composition
US-2018298222-A1 · Oct 18, 2018 · US
Flame retardant resin composition
US-10093823-B2 · Oct 9, 2018 · US
Photoactivatable crosslinker
US-2018273773-A1 · Sep 27, 2018 · US
Binder compositions with polyvalent phosphorus crosslinking agents
US-2018244947-A1 · Aug 30, 2018 · US
Method for producing polyether carbonate polyols
US-2018079890-A1 · Mar 22, 2018 · US
Halogen-free flame retardant TPU with very high LOI
US-9920166-B2 · Mar 20, 2018 · US
Semiaromatic polyamide resin composition and molded body formed by molding same
US-9879127-B2 · Jan 30, 2018 · US
Non-halogen thermoplastic resin composition and cable including the same
US-2018002523-A1 · Jan 4, 2018 · US
Polymethallyl alcohol resin composition and molding containing same
US-2017369671-A1 · Dec 28, 2017 · US
Polymethallyl alcohol resin composition and molding containing same
US-2017361581-A1 · Dec 21, 2017 · US
Method for producing polyether carbonate polyols
US-9815965-B2 · Nov 14, 2017 · US
Polycarbonate resin composition
US-9783674-B2 · Oct 10, 2017 · US
Halogen-free epoxy resin composition, prepreg, laminate and printed circuit board containing the same
US-2017283610-A1 · Oct 5, 2017 · US
Fire-retardant composition of an alloy of polyamide and polyester resins
US-9765217-B2 · Sep 19, 2017 · US
Phosphorus-containing compounds useful for making halogen-free, ignition-resistant polymers
US-9752010-B2 · Sep 5, 2017 · US
Thermoplastic resin composition and molded body using same
US-2017218195-A1 · Aug 3, 2017 · US
Flame retardant resin composition and connection structure for solar power generation module
US-2017204263-A1 · Jul 20, 2017 · US
Polyamide resin composition
US-9650474-B2 · May 16, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C08K5/51?
- CPC C08K5/51 is the Cooperative Patent Classification code for “Phosphorus bound to oxygen.”
- How many patents are filed under CPC C08K5/51 (Phosphorus bound to oxygen)?
- Our database includes 151 publications tagged with this CPC code.
- Is patent activity under CPC C08K5/51 growing?
- Publication counts under this code: 10 in 2024 vs 4 in 2025 (latest complete years).