Pharmaceutical composition of L-DOPA ester
Patent 5840756 Issued on November 24, 1998. Estimated Expiration Date: 
July 11, 2016. 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.
July 11, 2016. 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 ReferencesMethod and composition for the preparation of controlled long-acting pharmaceuticals Hydrodynamically balanced controlled release compositions containing L-dopa and a decarboxylase inhibitor Method and composition for the preparation of controlled long-acting pharmaceuticals for oral administration Process for preparing ethyl ester of L-DOPA L-DOPA ethyl ester to treat Parkinson's disease Patent #: 5607969 InventorsAssignee
ApplicationNo. 678716 filed on 07/11/1996US Classes:514/538, Nitrogen bonded to carbon in Z moiety514/565, N-N or N=C(-N)-N containing (e.g., hydrazines, hydrazones, or quanidines, etc.)514/614, N-N containing (e.g., aminimine, hydrazine, etc.)514/654, The chain consists of two or more carbons which are unsubtituted or have acyclic hydrocarbyl substituents only514/657Bicyclo ring systemExaminersPrimary: Jarvis, William R. A.Attorney, Agent or FirmForeign Patent References
International ClassesA61K 031/24A61K 031/195 A61K 031/16 A61K 031/135 AbstractThe present invention provides a pharmaceutical composition contains a thpeutically effective amount of L-DOPA ethyl ester and a carrier which comprises from 5.5 to 98.5% hydroxypropylmethyl cellulose, from 0.25 to 4.5% hydroxypropyl cellulose, and from 1 to 90% of a carboxyvinyl polymer.Field of SearchNitrogen bonded to carbon in Z moietyN-N or N=C(-N)-N containing (e.g., hydrazines, hydrazones, or quanidines, etc.) N-N containing (e.g., aminimine, hydrazine, etc.) The chain consists of two or more carbons which are unsubtituted or have acyclic hydrocarbyl substituents only Bicyclo ring system | |
