Patents by Inventor Michael Anthony Grable

Michael Anthony Grable 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: 4003773
    Abstract: A process for cutting a multi-filament tow into fibers of ultra-short length and narrow size distribution is provided. Initially, a multi-filament tow is passed through a bath of liquid impregnating material at elevated temperature. The impregnated tow is then passed through a die which is sized to control the quantity of material impregnating the tow and to compact the filaments of the tow into a closely packed bundle. The resulting tow is then cooled to solidify the impregnating material and to convert the tow to a rigid form. The rigid tow is then cut, yielding wafer-thin disks. The impregnating material is then stripped from the wafer-thin disks with a solvent followed by removal of the solvent, thereby yielding fibers of ultra-short length and narrow size distribution.
    Type: Grant
    Filed: March 2, 1976
    Date of Patent: January 18, 1977
    Assignee: Hercules Incorporated
    Inventor: Michael Anthony Grable