Patents Represented by Attorney Brain K. Stierwalt

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  • Aggressive convective drying in a conical screw type mixer/dryer
    Patent number: 5709036
    Abstract: The present invention relates to improved drying techniques which increase the capacity and efficiency of agitated pan type dryers. In particular, the present invention relates to a conical screw type mixer/dryer apparatus and method for aggressive convective drying of hard to dry chemical compounds, such as pharmaceuticals. The aggressive drying is brought about by creating turbulence within the drying vessel during the drying cycle. Significant reductions in drying cycle times have been achieved.
    Type: Grant
    Filed: May 3, 1996
    Date of Patent: January 20, 1998
    Inventor: Len W. Haleen
  • Kit for analysis of subsets of subpopulations of leukocytes
    Patent number: 5064616
    Abstract: A kit for determination of subsets of leukocytes utilizing flow cytometry analysis techniques.
    Type: Grant
    Filed: September 17, 1990
    Date of Patent: November 12, 1991
    Assignee: Becton Dickinson and Company
    Inventors: Jeanne Brosnan, Kenneth Ault