Patents by Inventor Eitaro Okumura

Eitaro Okumura 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 and apparatus for integrally forming a cutter on a carton blank
    Patent number: 5306224
    Abstract: A paperboard shaped into a profile substantially the same as that of a carton blank for folding into a carbon is formed with a plurality of first slits on an edge of the paperboard at a predetermined angle relative to the edge and with a plurality of second slits on the same edge at a predetermined angle relative to the first slits in such a manner that saw-teeth are integrally formed thereon. The saw teeth are immersed in a bath of a quick drying adhesive including .alpha.-cyanoacrylate to be impregnated with the adhesive and then dried, thereby forming teeth constituting a cutter on the carton blank. The carton obtained by folding the carton blank can be used as a packaging container for accommodating a roll of wrapping wed.
    Type: Grant
    Filed: February 23, 1993
    Date of Patent: April 26, 1994
    Assignee: Ayako Okumura
    Inventor: Eitaro Okumura
  • Method for integrally forming a cutter on a carton blank
    Patent number: 5204142
    Abstract: A paperboard shaped into a profile substantially the same as that of a carton blank for folding into a carbon is formed with a plurality of first slits on an edge of the paperboard at a predetermined angle relative to the edge and with a plurality of second slits on the same edge at a predetermined angle relative to the first slits in such a manner that saw-teeth are integrally formed thereon. The saw-teeth are immersed in a bath of a quick drying adhesive including .alpha.-cyanoacrylate to be impregnated with the adhesive and then dried, thereby forming teeth constituting a cutter on the carton blank. The carton obtained by folding the carton blank can be used as a packaging container for accommodating a roll of wrapping web.
    Type: Grant
    Filed: January 22, 1991
    Date of Patent: April 20, 1993
    Assignee: Ayako Okumura
    Inventor: Eitaro Okumura
  • Wrapping web container and cutter for cutting wrapping web
    Patent number: 5135784
    Abstract: A cutting tool for use on a wrapping web container containing a roll of a web for wrapping foods or the like. The cutting tool has a member made of a piece of paper having a toothed portion with teeth in the form of saw-teeth, the toothed portion having been hardened by being immersed in a liquid containing an alkyl .alpha.-cyanoacrylate and dried.
    Type: Grant
    Filed: July 31, 1990
    Date of Patent: August 4, 1992
    Assignee: Ayako Okumura
    Inventor: Eitaro Okumura