Patents by Inventor John Joseph Ziemiak

John Joseph Ziemiak 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).

  • Process for reforming petroleum hydrocarbon stocks
    Patent number: 6740228
    Abstract: Processes for reforming, and in particular aromatising, hydrocarbons from a petroleum source may be carried out by contacting the hydrocarbons with a catalyst of a zeolite KL impregnated with a metal promotor such as platinum, in which the zeolite crystals are of hockeypuck shape. The processes have a good yield and selectivity for the desired reformed products and the catalyst is stable, is associated with a low rate of coke formation, and has a long catalytically active life before regeneration is required.
    Type: Grant
    Filed: June 30, 1992
    Date of Patent: May 25, 2004
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Johannes Petrus Verduijn, Gary Brice McVicker, John Joseph Ziemiak