Patents by Inventor Ewald Rath

Ewald Rath 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: 4636208
    Abstract: A surgical sponge comprises a bulbous jacket of at least two superimposed inside and outside lying separate cuts of about the same length, of which the outside cut consists of a gauze material, the superimposed cuts having their edge portions gathered together to form a constricted inturned tubular neck, a rubber ring disposed interiorly of the jacket and contracted onto the inturned neck.The inside lying cut includes of a soft flat fleece of high absorbency, whereby the sponge can be mechanically produced, and is completely homogeneous, soft and nestling and especially the rubber ring is upholstered at its outer side by the soft fleece material. The sponge is free of loose threads and lint and resistant even in moist condition.
    Type: Grant
    Filed: February 7, 1985
    Date of Patent: January 13, 1987
    Inventor: Ewald Rath
  • Patent number: 4214341
    Abstract: In the case of a sponge for medicinal purposes, the gauze fabric cut has been folded into a small ball in the inside of which lie the edges of the cuts.In order to achieve a machine made, homogeneously structured sponge absorbing equally well at every place without lint or projecting ends of threads, two gauze fabric cuts (2, 3) of equal length have been placed one on top of the other, whereby the inside lying cut (3) has a width of about twice and the outside lying cut (2) has a width of at least four times the diameter of the sponge. The cuts (2, 3) are folded to a pouch in the case of which the edges of the cut turned inside out, are framed by a rubber ring (5). At the same time, the inside lying cut (3) is turned inside out only with its longitudinal ends through the rubber ring (5).
    Type: Grant
    Filed: May 23, 1979
    Date of Patent: July 29, 1980
    Inventor: Ewald Rath