Patents by Inventor Daria Nowakiwska Lissy

Daria Nowakiwska Lissy 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).

  • Crystalline molecular sieves
    Patent number: 7011810
    Abstract: MFS structure type zeolite manufacture is facilitated by using a second organic molecule in addition to the usual hexaethylpentane diammonium salt.
    Type: Grant
    Filed: September 27, 2002
    Date of Patent: March 14, 2006
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Jihad Mohammed Dakka, Machteld M. Mertens, Daria Nowakiwska Lissy
  • Xylene isomerization
    Patent number: 6028238
    Abstract: A process is described for isomerizing a feed which contains ethylbenzene and xylene, which process comprises the steps of:(a) contacting the feed under ethylbenzene conversion conditions with a particulate first catalyst component which comprises a molecular sieve having a constraint index of 1-12, the particles of said first catalyst component having a surface to volume ratio of about 80 to less than 200 inch.sup.-1 and the contacting step converting ethylbenzene in the feed to form an ethylbenzene-depleted product; and then(b) contacting the ethylbenzene-depleted product under xylene isomerization conditions with a second catalyst component.
    Type: Grant
    Filed: April 14, 1998
    Date of Patent: February 22, 2000
    Assignee: Mobil Oil Corporation
    Inventors: Jeffrey Scott Beck, Robert Andrew Crane, Jr., Jocelyn Anne Kowalski, Daria Nowakiwska Lissy, Mark Fischer Mathias, David Lawrence Stern