Method of fixating carbon dioxide to substituted oxazolidinones using MOF technology

ChangeBridge: Patent Grants - Organic Chemistry (C07D)

Published March 31st, 2026

Detected March 31st, 2026

Summary

USPTO granted patent US12590074B2 to King Fahd University of Petroleum and Minerals on March 31, 2026. The patent covers a method of fixating carbon dioxide (CO2) to form substituted oxazolidinones using a MIL-68(In)-X metal-organic framework (MOF) catalyst, reacting CO2 with epoxides and aromatic amines. The patent contains 20 claims and application number 18329092.

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What changed

USPTO granted patent US12590074B2 for a CO2 fixation method to King Fahd University of Petroleum and Minerals. The invention uses MIL-68(In)-X metal-organic framework technology to catalyze reactions between carbon dioxide, epoxides, and aromatic amines, producing substituted oxazolidinones. The patent includes 20 claims covering the method, MOF composition (formula I with amine-containing groups), and the resulting oxazolidinone products.

Manufacturers and researchers seeking to commercialize CO2 fixation technologies or produce oxazolidinones using metal-organic framework catalysts should conduct freedom-to-operate analysis to avoid infringing this granted patent. No regulatory compliance deadlines or penalties are associated with this patent grant.

What to do next

Conduct patent clearance/freedom-to-operate analysis before commercializing CO2 fixation technologies using MOF catalysts
Review patent claims to assess potential licensing needs for oxazolidinone synthesis processes

Source document (simplified)

← USPTO Patent Grants

Method of fixating carbon dioxide to substituted oxazolidinones

Grant US12590074B2 Kind: B2 Mar 31, 2026

Assignee

KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

Inventors

Aasif Helal

Abstract

A method of fixating carbon dioxide (CO2) to form a substituted oxazolidinone is described. The method includes mixing a metal-organic framework (MOF), at least one epoxide, and at least one aromatic amine to form a mixture. The method further includes contacting the mixture with a gas stream containing CO2 to react the CO2 in the gas stream with the epoxide and the aromatic amine to form a substituted oxazolidinone. The MOF is a MIL-68(In)—X MOF. X is of formula (I):
where at least one of R1 to R4 is an amine-containing group, and R1 to R4 are independently an amine-containing group or a hydrogen.