Patents Represented by Attorney F. Andrew Ubel, III

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  • Cements from .beta.-dicarbonyl polymers
    Patent number: 5227413
    Abstract: The invention provides novel ionomer polymers and cements comprising .beta.-dicarbonyl groups. The invention has particular utility as filling materials for restoring teeth and for cementing inlays and crowns into place in the tooth, providing a base or a lining in a tooth cavity, and as adhesives or sealants. The invention provides ionomer cement systems that achieve increased resistance to water absorption and solubility.
    Type: Grant
    Filed: February 27, 1992
    Date of Patent: July 13, 1993
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Sumita B. Mitra