Patents by Inventor Susan A. Freelin

Susan A. Freelin 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).

  • RAPIDLY DEGRADABLE FILTERS VIA ELECTRON IONIZATION
    Publication number: 20110132381
    Abstract: A method of forming a filter for a smoking article which includes exposing cellulose acetate fibers to an electron beam process, wherein electron beam process deacetylates the cellulose acetate fibers to render the cellulose acetate fibers water-permeable; and forming a cellulose acetate rod from a tow of the cellulose acetate fibers. Filter plugs of the cellulose acetate fibers are water-permeable and allow discarded filtered smoking articles to rapidly degrade and expose the components to the environment.
    Type: Application
    Filed: January 28, 2011
    Publication date: June 9, 2011
    Applicant: Philip Morris USA Inc.
    Inventors: Harvey J. Grubbs, Susan A. Freelin
  • Method of forming a filter component
    Patent number: 7896011
    Abstract: A method of forming a filter for a smoking article which includes exposing cellulose acetate fibers to an electron beam process, wherein electron beam process deacetylates the cellulose acetate fibers to render the cellulose acetate fibers water-permeable; and forming a cellulose acetate rod from a tow of the cellulose acetate fibers. Filter plugs of the cellulose acetate fibers are water-permeable and allow discarded filtered smoking articles to rapidly degrade and expose the components to the environment.
    Type: Grant
    Filed: July 31, 2007
    Date of Patent: March 1, 2011
    Assignee: Philip Morris USA, Inc.
    Inventors: Harvey J. Grubbs, Susan A. Freelin
  • Rapidly degradable filters via electron ionization
    Publication number: 20080127988
    Abstract: A method of forming a filter for a smoking article which includes exposing cellulose acetate fibers to an electron beam process, wherein electron beam process deacetylates the cellulose acetate fibers to render the cellulose acetate fibers water-permeable; and forming a cellulose acetate rod from a tow of the cellulose acetate fibers. Filter plugs of the cellulose acetate fibers are water-permeable and allow discarded filtered smoking articles to rapidly degrade and expose the components to the environment.
    Type: Application
    Filed: July 31, 2007
    Publication date: June 5, 2008
    Applicant: Philip Morris USA Inc.
    Inventors: Harvey J. Grubbs, Susan A. Freelin