Encrusting and bacterial resistant coatings for medical applications
Patent 5328954 Issued on July 12, 1994. Estimated Expiration Date: 
April 16, 2013. 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.
April 16, 2013. 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 ReferencesIndwelling urethral catheter system and method Patent #: 4946449 InventorAssigneeApplicationNo. 048489 filed on 04/16/1993US Classes:524/589, From -N=C=X reactant or blocked N=C=X reactant (X is chalcogen)428/423.1, Of polyamidoester (polyurethane, polyisocyanate, polycarbamate, etc.)523/105, Nonmedicated composition specifically intended for contact with living animal tissue or process of preparing; other than apparel523/106, Contact lens making composition524/590, With reactant containing at least one C-OH, (C=O)-OH or -C-O-C- group524/871, N=C=X containing reactant forming a solid polymer or SICP in the presence of a nonreactant material (X is chalcogen)524/874With N-containing reactantExaminersPrimary: Welsh, Maurice J.Attorney, Agent or FirmInternational ClassC08L 075/00AbstractDisclosed is an encrustation and bacterial-resistant coating for use on medical devices and in other medical-related applications. The coating includes a reaction product formed by the covalent linkage of a hydrophilic polyurethane prepolymer and aminopolycarboxylic acid. A urease inhibitor and/or an antibacterial agent may also be added to the coating.Field of SearchFrom -N=C=X reactant or blocked N=C=X reactant (X is chalcogen)With reactant containing at least one C-OH, (C=O)-OH or -C-O-C- group N=C=X containing reactant forming a solid polymer or SICP in the presence of a nonreactant material (X is chalcogen) With N-containing reactant Nonmedicated composition specifically intended for contact with living animal tissue or process of preparing; other than apparel Contact lens making composition Of polyamidoester (polyurethane, polyisocyanate, polycarbamate, etc.) | |
