Difluoromethyl ether derivative and process for producing the same
Patent 6864397 Issued on March 8, 2005. Estimated Expiration Date: 
June 18, 2023. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
June 18, 2023. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesTrifluorobenzene derivative and liquid crystal composition containing the same Difluoromethylene compounds Polyhaloalkyl ether derivatives as well as liquid crystal compositions and liquid crystal display elements containing them Patent #: 6007740 InventorsAssigneeApplicationNo. 10463616 filed on 06/18/2003US Classes:568/647, Halogen containing568/631, Plural rings containing568/640, Plural benzene rings bonded directly to the same carbon568/641, Polyoxy and halogen containing568/642, Plural benzene rings bonded directly to each other568/643, Polyoxy568/645, Halogen containing568/646Acyclic carbon to carbon unsaturation containingExaminersPrimary: Keys, RosalyndAttorney, Agent or FirmForeign Patent References
International ClassesC07C041/06C07C025/18 C09K019/20 C07C043/12 AbstractThe present invention provides a process for producing a difluoromethyl ether derivative simple and efficient process for producing the difluoromethyl ether derivative represented by Formula (1d′) or a difluoromethyl ether derivative represented by Formula (1c′): wherein all the variables are defined in the specification.Other References
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