Patents by Inventor Michael John Cipullo

Michael John Cipullo 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).

  • Method for preparing ion-exchange resin for use as a catalyst in the synthesis of bisphenols
    Patent number: 5723691
    Abstract: In the preparation of bisphenol-A by condensation of phenol with acetone in the presence of an acidic ion-exchange resin catalyst, pretreatment of the catalyst to render it free of acidic oligomers which are detrimental to the preparation of bisphenol-A entails washing the catalyst resin with deionized water until the washings show a specific conductance of less than 50 micromho/cm at 25.degree. C.
    Type: Grant
    Filed: August 31, 1995
    Date of Patent: March 3, 1998
    Assignee: General Electric Company
    Inventors: Michael John Cipullo, Eric James Pressman