Patents by Inventor Paul M. Scharfenberg

Paul M. Scharfenberg 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 of manufacturing corrugated paperboard product using a foamed adhesive
    Patent number: 4561918
    Abstract: A vinyl acetate ethylene copolymer adhesive obtains the production of a corrugated paperboard product at ambient temperatures without the need for the heat inputs heretofore required. The adhesive is foamed to expand it so that less adhesive material is required to a given quantity of product.
    Type: Grant
    Filed: April 25, 1985
    Date of Patent: December 31, 1985
    Assignee: Findley Adhesives, Inc.
    Inventors: Paul M. Scharfenberg, Kenneth N. Findley, Jr.
  • Method of manufacturing dual arch corrugated paperboard product
    Patent number: 4495011
    Abstract: A method for manufacturing a corrugated paperboard product having a two layer or dual arch corrugated medium applies a vinyl acetate ethylene copolymer adhesive in the foamed state to one entire side of one of the webs of the medium. The webs are passed through heated corrugating rolls to join them together. A liner is applied to one or both sides of the dual arch medium.
    Type: Grant
    Filed: April 5, 1982
    Date of Patent: January 22, 1985
    Assignee: Findley Adhesives, Inc.
    Inventors: Paul M. Scharfenberg, Kenneth N. Findley, Jr.