Patents by Inventor Edwin P. Boldingh

Edwin P. Boldingh 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).

  • Selective aromatics disproportionation process
    Patent number: 6063977
    Abstract: An improved catalyst and process are disclosed for the selective disproportionation of toluene. The process uses a zeolitic catalyst which is oil-dropped in an aluminum phosphate binder and has an X-ray diffraction pattern showing characteristic intensities at specified Bragg angles. Optionally, the catalyst is selectively precoked prior to toluene disproportionation. The catalyst and process provide improved selectivity for the production of paraxylene.
    Type: Grant
    Filed: December 17, 1998
    Date of Patent: May 16, 2000
    Assignee: UOP LLC
    Inventors: Gregory J. Gajda, Edwin P. Boldingh, Jennifer S. Holmgren
  • Stable, high-yield reforming catalyst
    Patent number: 5614454
    Abstract: A reforming process, selective for the dehydrocyclization of paraffins to aromatics, is effected using a catalyst containing multiple Group VIII (8-10) noble metals having different gradients within the catalyst and a nonacidic large-pore molecular sieve. The use of this bed of catalyst results in greater selectivity of conversion of paraffins to aromatics and improved catalyst stability, particularly in the presence of small amounts of sulfur.
    Type: Grant
    Filed: May 22, 1995
    Date of Patent: March 25, 1997
    Assignee: UOP
    Inventors: Leonid B. Galperin, Paula L. Bogdan, Edwin P. Boldingh
  • Stable, high-yield reforming catalyst
    Patent number: 5464800
    Abstract: A reforming process, selective for the dehydrocyclization of paraffins to aromatics, is effected using a bed of catalyst particles containing multiple Group VIII (8-10) noble metals having different gradients within the catalyst particles and a nonacidic large-pore molecular sieve. The use of this bed of catalyst particles results in greater selectivity of conversion of paraffins to aromatics and improved catalyst stability, particularly in the presence of small amounts of sulfur.
    Type: Grant
    Filed: January 24, 1995
    Date of Patent: November 7, 1995
    Assignee: UOP
    Inventors: Leonid B. Galperin, Paula L. Bogdan, Edwin P. Boldingh