Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Reexamination Certificate
2007-02-20
2007-02-20
Szekely, Peter (Department: 1714)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
C427S379000, C427S385500, C427S386000, C427S387000, C427S002280, C524S398000, C524S399000, C524S400000, C524S403000, C524S413000, C524S430000, C524S431000, C524S432000, C524S433000, C524S434000, C524S435000, C524S436000, C524S437000, C604S264000
Reexamination Certificate
active
10649595
ABSTRACT:
The present invention relates to antimicrobial compositions, methods for the production of these compositions, and use of these compositions with medical devices, such as catheters, and implants. The compositions of the present invention advantageously provide varying release kinetics for the active ions in the compositions due to the different water solubilities of the ions, allowing antimicrobial release profiles to be tailored for a given application and providing for sustained antimicrobial activity over time. More particularly, the invention relates to polymer compositions containing colloids comprised of salts of one or more oligodynamic metal, such as silver. The process of the invention includes mixing a solution of one or more oligodynamic metal salts with a polymer solution or dispersion and precipitating a colloid of the salts by addition of other salts to the solution which react with some or all of the first metal salts. The compositions can be incorporated into articles or can be employed as a coating on articles such as medical devices. Coatings may be on all or part of a surface.
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ESP@cenet Publication Abstract, DE3300203, Zin
Burn Brian M.
C. R. Bard Inc.
Szekely Peter
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