Patents by Inventor Bernhard Cohen

Bernhard Cohen 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).

  • Process for hydrosonically area thinning thin sheet materials
    Patent number: 5466401
    Abstract: A method for forming thinned areas in a thin sheet material. The method includes the steps of (1) placing the thin sheet material on a pattern anvil having a pattern of raised areas wherein the height of the raised areas is generally less than the thickness of the sheet material; (2) conveying the sheet material, while placed on the pattern anvil, through an area where a fluid is applied to the sheet material; and (3) subjecting the sheet material to a sufficient amount of ultrasonic vibrations in the area where the fluid is applied to the sheet material to area thin the sheet material in a pattern generally the same as the pattern of raised areas on the pattern anvil. In some embodiments, the thinned areas may be micro areas.
    Type: Grant
    Filed: May 4, 1994
    Date of Patent: November 14, 1995
    Assignee: Kimberly-Clark Corporation
    Inventors: Bernhard Cohen, Lee K. Jameson