Patents by Inventor Victor Simeon Koshkin

Victor Simeon Koshkin 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 making a bonded non-woven web
    Patent number: 3989788
    Abstract: Process for continuous bonding of a fibrous non-woven web of polyethylene terephthalate matrix and copolyester binder filaments which comprises depositing the matrix and binder filaments as a nonwoven web on a moving belt, steam treating the nonwoven web under restraint thereby consolidating the web, removing the restraint, transferring the consolidated web from the moving belt to a bonder, and finally bonding the web with a flow of hot air through the web.
    Type: Grant
    Filed: April 25, 1973
    Date of Patent: November 2, 1976
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Leland Lloyd Estes, Jr., Anton Fridrich Fridrichsen, Victor Simeon Koshkin