Patents by Inventor John G. Trumbull

John G. Trumbull 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).

  • Patent number: 4135024
    Abstract: Densified regions are formed in a low integrity dry-formed nonwoven fibrous web by embossing a front surface of the web with spaced-apart raised surfaces of an embossing roll. The web is embossed to the extent that the densified regions will transmit a treating fluid completely through their thickness to the front surface of the web while non-densified or high loft regions will not. Simultaneously with the embossing, treating fluid from a treating fluid conveying surface is applied to a rear surface of the web. The fluid migrates completely through the thickness of the web to the front surface in substantially only the densified regions of the web.The product of this invention is a dry-formed web having a basis weight in the range of about 0.5 oz./yds..sup.2 to about 8.0 oz./yds..sup.2. A surface of the web has an undulate profile including high loft regions and valley regions. The density of the web in the high loft regions is less than about 0.10 gr.
    Type: Grant
    Filed: August 16, 1976
    Date of Patent: January 16, 1979
    Assignee: Scott Paper Company
    Inventors: Joseph W. Callahan, John G. Trumbull