Patents by Inventor Toshihiro Kanemitsu

Toshihiro Kanemitsu 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 making and filling a bag
    Patent number: 5400568
    Abstract: This invention relates to a snap zipper, a bag with a snap zipper, manufacture method and apparatus for a bag with a snap zipper, and bagging method and apparatus for a bag with a snap zipper. A hot-welded portion of the snap zipper comprising a male member and a female member is formed of ionomer resin or random copolymer resin of ethylene-acrylic acid. At least one tape with a pair of snap zipper half-members and a base film are supplied and passed through guide rollers for being placed one above the other, followed by hot-welding the tapes with snap zipper half-members and the base film to each other to form a film with a snap zipper. The film with a snap zipper is guided by a guide member such that the pair of snap zipper half-member are intermeshed to form a tubular film. The tubular film is sealed off with intervals of a predetermined distance perpendicularly to the lengthwise direction thereof.
    Type: Grant
    Filed: August 20, 1992
    Date of Patent: March 28, 1995
    Assignee: Idemitsu Petrochemical Co., Ltd.
    Inventors: Toshihiro Kanemitsu, Kaoru Hayashi, Kazufumi Matsui
  • Bag and snap zipper made of different materials
    Patent number: 5335997
    Abstract: This invention relates to a snap zipper, a bag with a snap zipper, manufacture method and apparatus for a bag with a snap zipper, and bagging method and apparatus for a bag with a snap zipper. A hot-welded portion of the snap zipper comprising a male member and a female member is formed of ionomer resin or random copolymer resin of ethylene - acrylic acid. At least one tape with a pair of snap zipper half-members and a base film are supplied and passed through guide rollers for being placed one above the other, followed by hot-welding the tapes with snap zipper half-members and the base film to each other to form a film with a snap zipper. The film with a snap zipper is guided by a guide member such that the pair of snap zipper half-member are intermeshed to form a tubular film. The tubular film is sealed off with intervals of a predetermined distance perpendicularly to the lengthwise direction thereof.
    Type: Grant
    Filed: October 21, 1991
    Date of Patent: August 9, 1994
    Assignee: Idemitsu Petrochemical Co., Ltd.
    Inventors: Toshihiro Kanemitsu, Kaoru Hayashi, Kazufumi Matsui