Patents by Inventor Steven E. Silverberg

Steven E. Silverberg 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 of producing rigid foams and products produced therefrom
    Patent number: 5847018
    Abstract: A thermosetting plastic foam solid formed from the reaction product of: (a) either polyisocyanate or isocyanate; (b) a polyol; (c) a catalyst which is capable of promoting the thermosetting reaction between the polyisocyanate or isocyanate and the polyol; and (d) a blowing agent comprised at least partially from a high purity cyclopentane product, wherein the high purity cyclopentane product is about 95% or greater pure cyclopentane, and, optionally, (e) water and/or (f) liquid flame retardant.
    Type: Grant
    Filed: July 22, 1997
    Date of Patent: December 8, 1998
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Robert H. Blanpied, James Darryl Thornsberry, Steven E. Silverberg, James R. Lattner, C. Harry McMullen, Leonel E. Sanchez, Tronze-I Dennis Wu