Patents by Inventor Richard Patrick Swatloski

Richard Patrick Swatloski 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).

  • Dissolution and processing of cellulose using ionic liquids
    Patent number: 6824599
    Abstract: Cellulose is dissolved in an ionic liquid without derivatization, and is regenerated in a range of structural forms without requiring the use of harmful or volatile organic solvents. Cellulose solubility and the solution properties can be controlled by the selection of the ionic liquid constituents, with small cations and halide or pseudohalide anions favoring solution.
    Type: Grant
    Filed: September 27, 2002
    Date of Patent: November 30, 2004
    Assignee: The University of Alabama
    Inventors: Richard Patrick Swatloski, Robin Don Rogers, John David Holbrey
  • Cellulose matrix encapsulation and method
    Patent number: 6808557
    Abstract: A regenerated cellulose-encapsulated active substance and a method for encapsulating an active substance in a regenerated cellulose matrix are disclosed. The distribution of the active substance is preferably substantially homogeneous within the matrix of regenerated cellulose. The regenerated cellulose (i) has about the same molecular weight as the original cellulose from which it is prepared (ii) is substantially free of added substituent groups relative to the starting cellulose and is also substantially free of entrapped ionic liquid degradation products.
    Type: Grant
    Filed: March 21, 2003
    Date of Patent: October 26, 2004
    Assignees: The University of Alabama, PG Research Foundation
    Inventors: John David Holbrey, Scott K. Spear, Megan B. Turner, Richard Patrick Swatloski, Robin Don Rogers
  • Cellulose matrix encapsulation and method
    Publication number: 20040038031
    Abstract: A regenerated cellulose-encapsulated active substance and a method for encapsulating an active substance in a regenerated cellulose matrix are disclosed. The distribution of the active substance is preferably substantially homogeneous within the matrix of regenerated cellulose. The regenerated cellulose (i) has about the same molecular weight as the original cellulose from which it is prepared (ii) is substantially free of added substituent groups relative to the starting cellulose and is also substantially free of entrapped ionic liquid degradation products.
    Type: Application
    Filed: March 21, 2003
    Publication date: February 26, 2004
    Inventors: John David Holbrey, Scott K. Spear, Megan B. Turner, Richard Patrick Swatloski, Robin Don Rogers
  • Dissolution and processing of cellulose using ionic liquids
    Publication number: 20030157351
    Abstract: Cellulose is dissolved in an ionic liquid without derivatization, and is regenerated in a range of structural forms without requiring the use of harmful or volatile organic solvents. Cellulose solubility and the solution properties can be controlled by the selection of the ionic liquid constituents, with small cations and halide or pseudohalide anions favoring solution.
    Type: Application
    Filed: September 27, 2002
    Publication date: August 21, 2003
    Inventors: Richard Patrick Swatloski, Robin Don Rogers, John David Holbrey