Patents by Inventor Jong Seouk Lee

Jong Seouk Lee 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 PRODUCING VACUUM PACKAGING FILM HAVING AIR CHANNEL AND METHOD OF PRODUCING VACUUM PACKAGING BAG USING THE FILM
    Publication number: 20080041519
    Abstract: A method of producing a vacuum packaging film that has one or more air channels includes longitudinally cutting a sheet to form one or more channels by using a plurality of ring knives that are arranged at intervals from each other. A border sheet is provided while an exhaustion sheet is removed. The border sheet is layered on a side of a supply film. The border sheet and the supply film are provided to a layering roller. The border sheet and the supply film are laminated by using the layering roller to form a border part of the air channel.
    Type: Application
    Filed: August 17, 2007
    Publication date: February 21, 2008
    Applicant: LOCK & LOCK CO., LTD.
    Inventor: Jong Seouk Lee