Patents by Inventor Louis D. Sclafani

Louis D. Sclafani 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).

  • Reagent for the determination of a differential white blood cell count
    Patent number: 4978624
    Abstract: This invention relates to a method for the rapid determination of a differential white blood cell count in a sample, which method comprises:(a) preparing a reagent solution comprisingformaldehyde or paraformaldehyde;a surfactant;a sugar or sugar alcohol; anda buffer; and(b) rapidly mixing the reagent solution with the sample to be analyzed to form a reaction mixture, wherein both the reagent solution and the sample are initially at room temperature; and(c) rapidly heating the reaction mixture to a temperature of from about 62.degree. C. to about 72.degree. C. in order to lyse the red blood cells in the sample and fix the white blood cells in said sample. The invention also relates to the reagent solution of part (a) of the method.
    Type: Grant
    Filed: September 14, 1988
    Date of Patent: December 18, 1990
    Assignee: Technicon Instruments Corporation
    Inventors: John F. Cremins, Young R. Kim, Michael J. Malin, Louis D. Sclafani
  • Method for the determination of a differential white blood cell count
    Patent number: 4801549
    Abstract: This invention relates to a method for the rapid determination of a differential white blood cell count in a sample, which method comprises:(a) preparing a reagent solution comprising;formaldehyde or paraformaldehyde;a surfactant;a sugar or sugar alcohol; anda buffer; and(b) rapidly mixing the reagent solution with the sample to be analyzed to form a reaction mixture, wherein both the reagent solution and the sample are initially at room temperature; and(c) rapidly heating the reaction mixture to a temperature of from about 62.degree. C. to about 72.degree. C. in order to lyse the red blood cells in the sample and fix the white blood cells in the sample.
    Type: Grant
    Filed: February 2, 1987
    Date of Patent: January 31, 1989
    Assignee: Technicon Instruments Corporation
    Inventors: John F. Cremins, Young R. Kim, Michael J. Malin, Louis D. Sclafani
  • Stabilized aqueous hydrogen peroxide solution
    Patent number: 4744968
    Abstract: This invention relates to a novel stabilized aqueous hydrogen peroxide solution which comprises hydrogen peroxide in admixture with an aromatic polysulfonic acid, or a salt thereof.
    Type: Grant
    Filed: September 3, 1985
    Date of Patent: May 17, 1988
    Assignee: Technicon Instruments Corporation
    Inventors: Michael J. Malin, Louis D. Sclafani