Patents by Inventor Daniel B. Evans

Daniel B. Evans 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).

  • Method for reducing thermal and light-induced brightness reversion in lignin-containing pulps
    Patent number: 5443634
    Abstract: A method and article of manufacture thereof is provided for reducing brightness reversion in bleached lignin-containing pulps or newsprint by the treatment of the bleached lignin-containing pulp or newsprint with 2,5-dihydroxydioxane. In one embodiment, calcium carbonate is added to enhance the activity of 2,5-dihydroxydioxane.
    Type: Grant
    Filed: July 28, 1994
    Date of Patent: August 22, 1995
    Assignees: The Research Foundation of the State University of New York, Minerals Technologies Inc.
    Inventors: Raymond C. Francis, Daniel B. Evans
  • Method for reducing thermal and light-induced brightness reversion in lignin-containing pulps
    Patent number: 5360515
    Abstract: A method and article of manufacture thereof is provided for reducing brightness reversion in bleached lignin-containing pulps or newsprint by the treatment of the bleached lignin-containing pulp or newsprint with 2,5-dihydroxydioxane. In one embodiment, calcium carbonate is added to enhance the activity of 2,5-dihydroxydioxane.
    Type: Grant
    Filed: August 25, 1993
    Date of Patent: November 1, 1994
    Assignees: The Research Foundation of the State University of New York, Minerals Technology Inc.
    Inventors: Raymond C. Francis, Daniel B. Evans