Patents Represented by Attorney David M. Roseblum

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  • Air separation plant and method of fabrication
    Patent number: 5983666
    Abstract: An air separation plant having prefabricated heat exchanger and distillation column sections. The heat exchanger can be used in air expansion, waste expansion and product expansion plants by simply connecting the appropriate piping to the heat exchanger. The air separation unit is built up of standardized sections preferably utilizing structured packing. Simplified liquid distributors and supports are used in order to distribute liquid to the packing and to support the packing within the column, respectfully.
    Type: Grant
    Filed: October 27, 1997
    Date of Patent: November 16, 1999
    Assignee: The BOC Group, Inc.
    Inventors: Joseph Straub, Anish Mehta, Karl O. Toppel
  • Dry exhaust gas conditioning
    Patent number: 5213767
    Abstract: This invention relates to gas treatment apparatus and methods and particularly, but not exclusively, to such apparatus and methods for use with exhaust products from semi-conductor manufacturing process.A reactor column 10 has an inlet 11 at the bottom and an outlet 12. Between the inlet and outlet it is divided into three sequential stages containing: silicon or silicon containing materials; lime or soda lime and copper oxide or copper oxide reagents.
    Type: Grant
    Filed: December 3, 1990
    Date of Patent: May 25, 1993
    Assignee: BOC Limited
    Inventors: James R. Smith, Peter L. Timms