Herbicidal 5-substituted-3-phenyl-imidazolidine-2,4-diones
Patent 4911748 Issued on March 27, 1990. Estimated Expiration Date: 
December 22, 2008. 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.
December 22, 2008. 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 References 3846441 Synthesis of unsaturated hydantoins with an inexpensive catalyst Preparation of amino acids from unsaturated hydantoins Patent #: 4613691 InventorAssigneeApplicationNo. 289997 filed on 12/22/1988US Classes:504/278, Plural chalcogens bonded directly to ring carbons of the diazole ring504/167, Hetero ring is six-membered including nitrogen504/169, Hetero ring is five-membered having two or more ring hetero atoms of which at least one is nitrogen504/177, Hetero ring is six-membered including nitrogen504/180, Plural ring nitrogens in the hetero ring504/253, Plural ring nitrogens in the additional hetero ring548/314.7, The additional hetero ring contains nitrogen as the only ring hetero atom [e.g., N-(cyclopentylcarbonyl-L-histidyl)-pyrrolidine, etc.]548/315.1, The additional hetero ring contains sulfur as the only ring hetero atom [e.g., 5-(2-thienyl) hydantoin, etc.]548/316.1, Plural acyclic chalcogens bonded directly at the 2- and at the 4- or 5- positions of the 1,3-diazole ring [e.g., N-(5-nitro-2-furfuryliden)-1- amino-hydantoin, etc.]548/318.5, Having -C(=X)-, wherein X is chalcogen, bonded directly to the diazole ring548/321.1Benzene ring bonded directly to the diazole ringExaminersPrimary: Schwartz, Richard A.Attorney, Agent or FirmInternational ClassA01N 043/50AbstractThis invention relates to 5-substituted-3-phenyl-imidazolidine-2,4-diones, to a process for their preparation and to their use in herbicidal formulations.Other References
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