Patents by Inventor Jerzy Bialek

Jerzy Bialek 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 purifying 2,6-xylenol
    Patent number: 4568776
    Abstract: A raw 2,6-xylenol product is purified by melting it, then slowly and uniformly cooling it until at least 60 to 100% is crystallized, with the greater concentration of the impurities being present nearer the surface of the resulting crystals, gradually heating the crystalline solid mass to an elevated temperature no higher than by 0.1.degree. to 5.degree. C. below the solidification temperature of 2,6-xylenol to cause only surface melting of the crystals, thus yielding a molten liquid phase and a solid crystalline phase, the solid phase containing 2,6-xylenol in greater purity than the molten phase.
    Type: Grant
    Filed: December 3, 1984
    Date of Patent: February 4, 1986
    Assignee: Enichimica S.p.A.
    Inventors: Jerzy Bialek, Marek Plesnar, Janina Werle, Jan Bialy