Patents by Inventor Charles L. Beeson

Charles L. Beeson 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).

  • Solvent blockers and multilayer barrier coatings for thin films
    Patent number: 5225288
    Abstract: A film comprising alternating layers of polyvinylidene chloride resin and a solvent barrier such as polyvinyl alcohol provides superior barrier properties. Barrier and mechanical properties are enhanced when formulation additives are present at customary levels only in the outermost layers.
    Type: Grant
    Filed: May 21, 1992
    Date of Patent: July 6, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Charles L. Beeson, Raymond T. Cole, Gedeon I. Deak, Herbeson H. Leidolf, Jr.
  • Solvent blockers and multilayer barrier coatings for thin films
    Patent number: 5151331
    Abstract: A film comprising alternating layers of polyvinylidene chloride resin and a solvent barrier such as polyvinyl alcohol provides superior barrier properties. Barrier and mechanical properties are enhanced when formulation additives are present at customary levels only in the outermost layers.
    Type: Grant
    Filed: February 5, 1992
    Date of Patent: September 29, 1992
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Charles L. Beeson, Raymond T. Cole, Gedeon I. Deak, Harbeson H. Leidolf, Jr.
  • Solvent blockers and multilayer barrier coatings for thin films
    Patent number: 5102699
    Abstract: A film comprising alternating layers of polyvinylidene chloride resin and a solvent barrier such as polyvinyl alcohol provides superior barrier properties. Barrier and mechanical properties are enhanced when formulation additives are present at customary levels only in the outermost layers.
    Type: Grant
    Filed: August 10, 1990
    Date of Patent: April 7, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Charles L. Beeson, Raymond T. Cole, Gedeon I. Deak, Harbeson H. Leidolf, Jr.