IP Verse

Blended Fuel Compositions With Improved Emissions Profiles

Patent No. EP3585862 (titled "Blended Fuel Compositions With Improved Emissions Profiles") was filed by REG Synthetic Fuels on Jan 16, 2019. The application was issued on Mar 19, 2025.

Patent Summary

A method for producing diesel fuel blends that exhibit improved emissions performance compared to conventional blends, while maintaining compatibility with conventional elastomers. The method involves blending petroleum diesel with biodiesel in a controlled manner to achieve optimal performance characteristics. The blending process is optimized through a combination of conventional blending techniques and specialized testing protocols, including a novel cold soak filter blocking test that provides a more accurate measure of filter-plugging potential than conventional cold soak tests. The optimized blend composition is then formulated into a fuel product that meets or exceeds the performance requirements of conventional diesel fuels, while maintaining compatibility with conventional elastomers.

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Patent Family

Patent Oppositions (2)

Patent oppositions filed by competitors challenge the validity of a granted patent. These oppositions are typically based on claims of prior art, lack of novelty, or non-obviousness. They are a key part of the process for determining a patent's strength and enforceability.

CompanyOpposition DateRepresentative
TOTALENERGIES ONETECHDec 17, 2025CASALONGA
NESTE OYJDec 16, 2025ZACCO DENMARK

Dossier Documents

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EP3585862

REG SYNTHETIC FUELS
Application Number
EP19740804A
Filing Date
Jan 16, 2019
Status
Granted And Under Opposition
Feb 14, 2025
Publication Date
Mar 19, 2025
External Links
Slate, Register , Google Patents