Patents by Inventor Kozo Mita
Kozo Mita 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).
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Patent number: 8434637Abstract: A packaging bag for microwave oven heating, is manufactured by using a complex film at least one side of which comprises a sealant layer, folding the complex film or placing the complex films one upon another so as to encounter the sealant layers to each other, sealing the peripheral of the overlapped complex films by a main seal part to form a sealed bag, and providing in the bag a region which is isolated from a space for storing contents by a steam port seal part. The steam port seal part surrounds a steam easy permeable element. The lamination strength between the layers of the complex film in hot condition is not less than 1.5 N/15 mm in width, and the seal strength at least at the steam port seal part in hot condition is not more than 28 N/15 mm in width.Type: GrantFiled: April 4, 2006Date of Patent: May 7, 2013Assignee: Dai Nippon Printing Co., LtdInventors: Kozo Mita, Yoshitaka Hamada, Atsuko Takahagi, Shin Yamada
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Patent number: 8293348Abstract: There is provided a multilayer laminate film with easy unsealability, heat resistance and easy cuttability, having a seal layer (A) and a base material layer (B), the multilayer laminate film containing the seal layer (A) and the base material layer (B) composed of a mixture of 10-50 parts by weight of high-density polyethylene and 50-90 parts by weight of polypropylene, laminated on the seal layer (A) in one layer or two or more layers, wherein the base material layer (B) is composed of one member selected from the group consisting of (a) an ethylene/butene copolymer with a density of 0.93 g/cm3-0.94 g/cm3, polymerized using a multisite catalyst, (b) high-density polyethylene with a density of 0.945 g/cm3-0.965 g/cm3 and (c) an ethylene/propylene block or random copolymer, further wherein the layer thickness of the seal layer (A) is 1 ?m-20 ?m while the layer thickness of the base material layer (B) is 20 ?m-100 ?m, as well as a packaging container and packaging bag employing it as a lid material.Type: GrantFiled: October 29, 2008Date of Patent: October 23, 2012Assignee: Dai Nippon Printing Co., Ltd.Inventors: Masato Yuno, Kaoru Watanabe, Norio Akita, Shigeki Matsui, Satoshi Oosone, Kozo Mita
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Publication number: 20090035424Abstract: A packaging bag for microwave oven heating, is manufactured by using a complex film at least one side of which comprises a sealant layer, folding the complex film or placing the complex films one upon another so as to encounter the sealant layers to each other, sealing the peripheral of the overlapped complex films by a main seal part to form a sealed bag, and providing in the bag a region which is isolated from a space for storing contents by a steam port seal part. The steam port seal part surrounds a steam easy permeable element. The lamination strength between the layers of the complex film in hot condition is not less than 1.5 N/15 mm in width, and the seal strength at least at the steam port seal part in hot condition is not more than 28 N/15 mm in width.Type: ApplicationFiled: April 4, 2006Publication date: February 5, 2009Applicant: DAI NIPPON PRINTING CO., LTDInventors: Kozo Mita, Yoshitaka Hamada, Atsuko Takahagi, Shin Yamada
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Patent number: 7063228Abstract: Packaging bag which comprises a main body walls of which envelops a first internal space, a wing part which envelops a second internal space, a point-seal part formed within the wing part, and a steam permeable means located within an area which is isolated from the first and second inner spaces by the point-seal part; wherein the first internal space is used for storing contents and is subjected to sealing to make a sealed space after contents storing, wherein the wing part is formed of two walls mutually-faced and extended from the wall of the main body in the direction of intersecting to the face of main body, and wherein the second inner space is communicated with the first internal space at an end thereof and closed at other ends thereof.Type: GrantFiled: November 15, 2002Date of Patent: June 20, 2006Assignee: Dai Nippon Printing Co., Ltd.Inventors: Kozo Mita, Atsuko Takahagi, Hiroko Nozaki
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Publication number: 20050255200Abstract: The present invention provides a food packaging bag, which can hermetically seal and pack foods therein for long-term storage of the foods and can realize cooking in a safe manner, a food-packaged body, and a method for manufacturing the food-packaged body. Preferably, the present invention provides a food packaging bag, which, in a food packed state, does not undergo breakage of the seal upon exposure to pressure or impact applied during transport or storage and, at the time of serving, even when placed in the hermetically sealed state in a microwave oven followed by heating, can automatically lower the internal pressure to prevent the burst of the bag, and a food-packaged body, and a method for manufacturing the food-packaged body.Type: ApplicationFiled: February 7, 2005Publication date: November 17, 2005Applicant: DAI NIPPON PRINTING CO., LTD.Inventors: Atsuko Takahagi, Kozo Mita
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Patent number: 6860843Abstract: A pair of superposed laminated films are fed by a web feed unit, and a longitudinal heat-sealing unit and a lateral heat-sealing unit unite together the pair of films by heat-sealing. A notch and tearing incision forming unit forms notches and tearing incisions in the pair of films. A cutting unit cuts the thus processed pair of united films into packages.Type: GrantFiled: July 2, 2002Date of Patent: March 1, 2005Assignee: Dai Nippon Printing Co., Ltd.Inventors: Kazuyoshi Hayashi, Koji Shimizu, Kozo Mita
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Patent number: 6596355Abstract: A packaging material is composed of a heat resistant base layer, a sealant layer, and a resin layer disposed at least a portion between the heat-resistant base layer and the sealant layer. The resin layer is composed of a resin material having a predetermined strength in a non-heated temperature state of less than a room temperature and this strength is lowered in a high temperature state heated, for example, by a microwave oven. Such packaging material can be effectively utilized for many kinds of packaging bags or containers with the sealant layer being disposed to the inner content side of the bag or container.Type: GrantFiled: June 21, 2000Date of Patent: July 22, 2003Assignee: Dai Nippon Printing Co., Ltd.Inventors: Kozo Mita, Atsuko Takahagi, Hirotaka Tsuchiya, Kazunori Shigeta
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Publication number: 20030123758Abstract: Packaging bag which comprises a main body walls of which envelops a first internal space, a wing part which envelops a second internal space, a point-seal part formed within the wing part, and a steam permeable means located within an area which is isolated from the first and second inner spaces by the point-seal part; wherein the first internal space is used for storing contents and is subjected to sealing to make a sealed space after contents storing, wherein the wing part is formed of two walls mutually-faced and extended from the wall of the main body in the direction of intersecting to the face of main body, and wherein the second inner space is communicated with the first internal space at an end thereof and closed at other ends thereof.Type: ApplicationFiled: November 15, 2002Publication date: July 3, 2003Inventors: Kozo Mita, Atsuko Takahagi, Hiroko Nozaki
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Publication number: 20020183181Abstract: A pair of superposed laminated films are fed by a web feed unit, and a longitudinal heat-sealing unit and a lateral heat-sealing unit unite together the pair of films by heat-sealing. A notch and tearing incision forming unit forms notches and tearing incisions in the pair of films. A cutting unit cuts the thus processed pair of united films into packages.Type: ApplicationFiled: July 2, 2002Publication date: December 5, 2002Applicant: Dai Nippon Printing Co., Ltd.Inventors: Kazuyoshi Hayashi, Koji Shimizu, Kozo Mita
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Patent number: 6074097Abstract: A pair of superposed laminated films are fed by a web feed unit, and a longitudinal heat-sealing unit and a lateral heat-sealing unit unite together the pair of films by heat-sealing. A notch and tearing incision forming unit forms notches and tearing incisions in the pair of films. A cutting unit cuts the thus processed pair of united films into packages.Type: GrantFiled: April 23, 1998Date of Patent: June 13, 2000Assignee: Dai Nippon Printing Co., Ltd.Inventors: Kazuyoshi Hayashi, Koji Shimizu, Kozo Mita
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Patent number: 5698249Abstract: The present invention relates to a technique for packaging fresh plants, by which the freshness of the fresh plants can be retained from the time they are shipped by producers, until the time they are consumed by consumers. By controlling the water vapor permeability, and oxygen and carbonic acid gas transmission rates of a film, a package of fresh plant suitable for non-airtight or airtight packaging, a packaging material useful for such a package, and a method for retaining the freshness of fresh plants are provided.Type: GrantFiled: November 14, 1994Date of Patent: December 16, 1997Assignee: Dai Nippon Printing Co., Ltd.Inventors: Kazuyoshi Hayashi, Koji Shimizu, Noriko Sugawara, Kozo Mita