Patents by Inventor Virginia L. Cunningham

Virginia L. Cunningham has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Poly(dimethylaminoethyl methacrylate) and method of preparation
    Patent number: 4129534
    Abstract: Novel crosslinked ion exchange resins derived from dimethylaminoethyl methacrylate are disclosed together with their process of manufacture by suspension polymerization preferably utilizing a trialkylamine phase extender. Trialkylamines are found to be useful generally as phase extenders for the preparation of other polymeric materials by the known methods of suspension polymerization.
    Type: Grant
    Filed: August 11, 1977
    Date of Patent: December 12, 1978
    Assignee: Rohm and Haas Company
    Inventor: Virginia L. Cunningham
  • Crosslinked, macroreticular poly(dimethylaminoethyl methacrylate) ion-exchange resins and method of preparation by aqueous suspension polymerization using trialkylamine phase extender
    Patent number: 4052343
    Abstract: Novel crosslinked ion exchange resins derived from dimethylaminoethyl methacrylate are disclosed together with their process of manufacture by suspension polymerization preferably utilizing a trialkylamine phase extender. Trialkylamines are found to be useful generally as phase extenders for the preparation of other polymeric materials by the known methods of suspension polymerization.
    Type: Grant
    Filed: November 10, 1975
    Date of Patent: October 4, 1977
    Assignee: Rohm and Haas Company
    Inventor: Virginia L. Cunningham
  • Removal of antimony from industrial streams
    Patent number: 4046688
    Abstract: A novel process is described for the removal and/or recovery of dissolved antimony from an industrial stream, such as a waste stream, using a strong acid and/or a strong base ion exchange resin, in the hydrogen and hydroxyl forms respectively, to adsorb the antimony.
    Type: Grant
    Filed: October 21, 1975
    Date of Patent: September 6, 1977
    Assignee: Rohm and Haas Company
    Inventors: Virginia L. Cunningham, James S. Clovis, Marvin J. Hurwitz