Patents by Inventor Jacob W. H. Groeneveld

Jacob W. H. Groeneveld 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).

  • Arc furnace roof
    Patent number: 4323718
    Abstract: The invention relates to an arc furnace roof. The roof is comprised of a metal cover which is bolt-connected to the furnace shell. Secured to the lower side of the cover is a plurality of shackle hooks, each of said shackle hooks having an anchor bolt hooked therein. The metal cover has a first layer of insulating concrete applied to its lower side and a second layer of refractory concrete applied to the hard first layer of insulating concrete, the two layers of insulating and refractory concrete, respectively, embedding the shackle hooks and anchor bolts.
    Type: Grant
    Filed: June 17, 1980
    Date of Patent: April 6, 1982
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Otto Buhring, Gerardus J. W. Dreessen, Jacob W. H. Groeneveld, Robert Queck, Heinrich Thome, Gerrit J. Willemsen