Patents by Inventor Johannes N. van Eijk

Johannes N. van Eijk 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 preparing binder pitches
    Patent number: 4176043
    Abstract: A process for preparing a binder pitch, in which a high-aromatic residual fraction from petroleum raw materials is mixed with a coal tar fraction in weight ratios of about 1:9 to 9:1 and heated, while during heating the mixture is kept in contact with a dehydrogenating agent, in particular an oxygen-containing gas.
    Type: Grant
    Filed: June 20, 1977
    Date of Patent: November 27, 1979
    Assignee: Cindu Chemie B.V.
    Inventor: Johannes N. van Eijk