Biocompatible and biodegradable poly (phosphoester-urethanes)
Patent 5176907 Issued on January 5, 1993. Estimated Expiration Date: 
August 13, 2011. 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.
August 13, 2011. 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 3153013 Polyurethanes containing a poly (oxyorganophosphate/phosphonate) flame retardant Polyhydroxyl polyether compounds containing phosphorus and polymeric resins prepared therefrom Patent #: 4298709 InventorAssigneeApplicationNo. 744291 filed on 08/13/1991US Classes:424/78.08, SOLID SYNTHETIC ORGANIC POLYMER AS DESIGNATED ORGANIC ACTIVE INGREDIENT (DOAI)424/423, Surgical implant or material424/426, Errodable, resorbable, or dissolving424/430, Vaginal, urethral, uterine424/432, IUD or ring528/59, From N=C=X reactant having at least two -C-NH-C(=X)- groups528/66, Reactant having two -XH groups contains two or more -C-X-C- groups or two or more carboxylic acid ester groups528/72, Reactant contains at least one phosphorus atom528/76, With ether or thioether compound containing at least two -C-X-C- groups528/85With reactant containing at least two -XH groupsExaminersPrimary: Page, Thurman K.Assistant: Azpuru, Carlos Attorney, Agent or FirmInternational ClassesA61K 031/74C08G 018/28 C08G 018/48 C08G 018/10 AbstractBiocompatible and biodegradable poly(phosphoester-urethanes), compositions comprising the poly(phosphoester-urethanes), and methods of use as a drug delivery device and an implant.Field of SearchSOLID SYNTHETIC ORGANIC POLYMER AS DESIGNATED ORGANIC ACTIVE INGREDIENT (DOAI)Surgical implant or material Errodable, resorbable, or dissolving Vaginal, urethral, uterine IUD or ring From N=C=X reactant having at least two -C-NH-C(=X)- groups Reactant having two -XH groups contains two or more -C-X-C- groups or two or more carboxylic acid ester groups Reactant contains at least one phosphorus atom With ether or thioether compound containing at least two -C-X-C- groups Ether or thioether contains a carbocyclic or aromatic group With reactant containing at least two -XH groups | |
