Chemical recyling of plastics using ionic liquids or deep eutectic solvents
US-2024052133-A1 · Feb 15, 2024 · US
by treatment with organic compounds containing nitrogen, sulfur or phosphorus
by treatment with organic compounds containing nitrogen, sulfur or phosphorus · 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 | C08J11/28 |
| Official title | by treatment with organic compounds containing nitrogen, sulfur or phosphorus |
| Display label | by treatment with organic compounds containing nitrogen, sulfur or phosphorus |
| Total patents | 202 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 4 |
| 2017 | 4 |
| 2018 | 10 |
| 2019 | 9 |
| 2020 | 15 |
| 2021 | 12 |
| 2022 | 17 |
| 2023 | 34 |
| 2024 | 28 |
| 2025 | 50 |
| 2026 | 15 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for depolymerising polyester
US-2024052131-A1 · Feb 15, 2024 · US
Method for recycling polyester/polyurethane
US-2021403670-A1 · Dec 30, 2021 · US
Recovery of fibers from fiber reinforced polymers with Lewis bases
US-11208345-B2 · Dec 28, 2021 · US
Novel Polymers Depolymerizable by Metathesis of a Cleavable Unit
US-2021371575-A1 · Dec 2, 2021 · US
Lewis base-mediated recovery of fibers from fiber reinforced polymers
US-11167451-B2 · Nov 9, 2021 · US
Compositions of and methods for producing modified monomers and polyimides for sour mixed gas separation
US-2021309803-A1 · Oct 7, 2021 · US
Compositions for use with polysulfide sealants and related methods
US-2021214526-A1 · Jul 15, 2021 · US
Rubber composition for downhole tools and member for downhole tools
US-11059952-B2 · Jul 13, 2021 · US
Method for separating and recovering layered film
US-2021187790-A1 · Jun 24, 2021 · US
Method for reclaiming rubber, and renewed rubber compositions obtainable thereby
US-11041059-B2 · Jun 22, 2021 · US
Methods of synthesizing ionic liquids from primary alcohol-containing lignin compounds
US-11028249-B2 · Jun 8, 2021 · US
Recycled rubber
US-2021147584-A1 · May 20, 2021 · US
Chemical recycling of polyethylene terephthalate by microwave irradiation
US-2021047495-A1 · Feb 18, 2021 · US
Chemical recycling of polyethylene terephthalate by microwave irradiation
US-10858493-B2 · Dec 8, 2020 · US
Process for recycling silicones
US-2020377686-A1 · Dec 3, 2020 · US
Method for producing rubber-modified bitumen using vulcanized rubber
US-10844190-B2 · Nov 24, 2020 · US
Recyclable and Reconfigurable High-Performance Polymer Networks and Uses Thereof
US-2020283415-A1 · Sep 10, 2020 · US
Magnetically-recoverable catalysts for depolymerization
US-10767027-B1 · Sep 8, 2020 · US
Recovery of Fibers from Fiber Reinforced Polymers with Lewis Bases
US-2020239357-A1 · Jul 30, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C08J11/28?
- CPC C08J11/28 is the Cooperative Patent Classification code for “by treatment with organic compounds containing nitrogen, sulfur or phosphorus.”
- How many patents are filed under CPC C08J11/28 (by treatment with organic compounds containing nitrogen, sulfur or phosphorus)?
- Our database includes 202 publications tagged with this CPC code.
- Is patent activity under CPC C08J11/28 growing?
- Publication counts under this code: 28 in 2024 vs 50 in 2025 (latest complete years).