Patents by Inventor Johannes Karttunen

Johannes Karttunen 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).

  • Bag to be carried in the hand and procedure for manufacturing the bag
    Patent number: 4610029
    Abstract: A plastic bag to be carried in the hand and a method for manufacturing the plastic bag are disclosed. The plastic bag comprises a top part, a jacket part and a bottom part. The top part is provided with a carrying aperture or the like and the bottom part is provided with a filling valve or the like by which the plastic bag can be filled with bulk material. The top part of the plastic bag is formed by a transverse seam and a reinforcing patch attached to one side of the upper end of the bag whereby the top part includes three material plies. A reinforcing patch can be attached to both sides of the upper end of the bag so that the top part is constituted by four plies.
    Type: Grant
    Filed: August 8, 1985
    Date of Patent: September 2, 1986
    Assignee: Oy W. Rosenlew AB
    Inventors: Esko Huhtala, Markku Laaksonen, Matti Vaho, Johannes Karttunen, Gosta Eklund