Patents by Inventor Robert Kartzmark

Robert Kartzmark 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).

  • Patent number: 4028224
    Abstract: Process for the preparation of low pour point lubricating oils comprising:I. vacuum distilling a heavy naphthenic crude oil feedstock containing from about 2 to 10 weight % of sulfur based on the weight of the feedstock, said feedstock exhibiting a specific gravity ranging from about 5.degree. to 20.degree. API to obtain at least one distillate cut exhibiting a boiling range of from about 500.degree. to 1000.degree. F and a specific gravity ranging from about 10.degree. to 25.degree. APIii. hydrocracking said distillate cut in at least one hydrocracking zone in contact with a hydrocracking catalyst at a temperature from about 650.degree. to 850.degree. F, a hydrogen partial pressure of about 500 to 5000 psig. and a space velocity of from about 0.1 to 2.0 V/V/Hr;Iii. removing the low boiling light ends from the hydrocrackate; andIv. recovering a low pour point lubricating oil.
    Type: Grant
    Filed: December 17, 1975
    Date of Patent: June 7, 1977
    Assignee: Exxon Research and Engineering Company
    Inventors: John M. MacDonald, Robert Kartzmark