Patents by Inventor Edwin D. Culligan

Edwin D. Culligan 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: 5980919
    Abstract: Conductive, flowable, emollient compositions and electrostatic methods for their application e.g., to tissue, are disclosed. Compositions of the invention include emollient(s) and conductivity modifiers. Emollient-compatible phosphates and succinates are particularly preferred families of conductivity modifiers. In methods of the invention conductive emollient composition of the invention are preferably applied to tissue substrates, particularly facial tissue substrates, and particularly in a commercial tissue-making process. Electrostatic spray processes are utilized to obtain surprisingly uniform application of conductive emollient to tissue with minimal overspray or spray path overlap.
    Type: Grant
    Filed: November 10, 1997
    Date of Patent: November 9, 1999
    Assignee: Potlatch Corporation
    Inventors: Steven H. Greenfield, Edwin D. Culligan