(under subclass 78.1) Subject matter wherein the composition contains two or more ion exchange resins as DOAI; e.g., an antihistaminic composition consisting of 10 percent chlorpheniramine sulfonic acid cation exchange resin and 90 percent phenyltoloxamine sulfonic acid cation exchange resin, etc.
(1) Note. A single resin heated with a multiplicity of reagents; e.g., calcium hydroxide and sodium hydroxide to impart both calcium and sodium ions to the resin is not a mixture of two resins. The same resin treated in separate batches with the above reagents respectively then combined would be proper here.
