US Patent No: 4,528,221

Number of patents in Portfolio can not be more than 2000

Polystyrene foamed sheet suitable for forming

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Importance

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Abstract

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A polystyrene foamed sheet suitable for thermoforming and containers such as cups or trays formed therefrom, the foamed sheet comprising a polystyrene resin as the base resin which contains a specific quantity of each a rubber component and a filler, having specific bulk density, thickness, stretch ratio and residual gas quantity, and said sheet being preferably laminated with a film.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
SEKISUI KASEIHIN KOGYO KABUSHIKI KAISHANARA17

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Komatsuzaki, Nobuyuki Koga, JP 2 60
Machida, Bon Koga, JP 3 108
Tsubone, Masahiro Koga, JP 13 241

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Sekisui Kaseihin Kogyo Kabushiki Kaisha (2)
* 4,426,065 Continuous process for the production of polystyrene foamed articles 15 1981
* 4,463,861 Sheet for forming sleeve and process for producing the same 48 1983
* Cited By Examiner

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (2)
* 6,492,012 Polymer penetrated porous substrates 4 2000
* 2005/0025,979 Livestock security tag assembly 28 2003
 
SYNBRA TECHNOLOGY B.V. (1)
* 2010/0098,928 Polymer Mixture, A Method For Producing An Extruded Product, Methods For Producing A Starting Material For A Foamed Moulded Product And Methods For Producing A Foamed Moulded Product, The Products Obtained With Said Methods And Applications Thereof 2 2008
 
PREGIS INNOVATIVE PACKAGING INC. (2)
7,045,556 Polyolefin foams made with isopentane-based blowing agents 10 2002
* 2004/0006,149 Polyolefin foams made with isopentane-based blowing agents 3 2002
 
DIXIE CONSUMER PRODUCTS LLC (1)
* 2009/0110,855 Filled Polystyrene Compositions and Uses Thereof 0 2007
 
Grupo Convermex, S.A. de C.V. (5)
* 2006/0005,917 Method and apparatus for producing labeled, plastic foam containers, and product of same 19 2005
8,105,459 Method and apparatus for producing labeled, plastic foam containers, and product of same 9 2010
* 2011/0011,523 METHOD AND APPARATUS FOR PRODUCING LABELED, PLASTIC FOAM CONTAINERS, AND PRODUCT OF SAME 0 2010
8,617,681 Method and apparatus for producing labeled, plastic foam containers, and product of same 0 2012
9,321,557 Method and apparatus for producing labeled, plastic foam containers, and product of same 0 2013
 
STYRON EUROPE GMBH (1)
* 5,364,696 Polystyrene foam sheet useful for forming deep drawn articles, a process to produce those articles, and the deep drawn articles 13 1994
 
IDEMITSU KOSAN CO., LTD. (3)
* 6,013,726 Composition of styrene resin, thermoplastic resin and rubber 16 1995
* 5,891,951 Styrene-based resin composition 6 1995
* 5,683,801 Styrenic resin laminate and molding thereof 3 1996
 
PACTIV CORPORATION (1)
* 2006/0175,326 Polymeric containers and container assemblies with cohesive 5 2005
 
Mobil Oil Corporation (1)
* 4,832,775 Composite structure based on polystyrene foam and oriented polypropylene film and thermo-formed articles fabricated therefrom 37 1987
 
TOYO SEIKAN KAISHA, LTD. (1)
* 4,904,512 Compression-molded article having multilayer structure 6 1987
 
NOVA CHEMICALS INC. (2)
* 7,252,866 Thermoplastic film for a disposable container made of expandable thermoplastic particles 3 2002
* 2004/0121,101 Thermoplastic film for a disposable container made of expandable thermoplastic particles 3 2002
 
TENNECO PLASTICS COMPANY (1)
* 5,356,944 High melt index polystytene foam and method 16 1994
 
AVERY DENNISON CORPORATION (3)
* 6,150,013 Low thermal conductivity in-mold label films 32 1996
6,758,000 Livestock security tag assembly 15 2001
6,716,501 Multilayered film 8 2002
 
OWENS-ILLINOIS, INC. (1)
* 5,405,667 Plastic container with multilayer label applied by in-mold labeling 22 1992
 
CCL LABEL, INC. (3)
6,756,095 Heat-sealable laminate 29 2001
6,773,653 In-mold labeling method 77 2001
* 2005/0008,809 In-mold labeling method and labeled products 4 2004
 
THE DOW CHEMICAL COMPANY (5)
* 5,389,694 Foamable styrenic polymer gel having a carbon dioxide blowing agent and a process for making a foam structure therefrom 9 1993
* 5,688,832 Low molecular weight alkenyl aromatic polymer foam 6 1996
* 5,674,916 Extruded, open-cell microcellular alkenylaromatic polymer foams and process for making 16 1997
* 5,863,960 Extruded, open-cell microcellular alkenyl aromatic polymer foams, process for making and articles made therefrom 4 1997
* 5,780,521 Extruded, open-cell microcellular alkenyl aromatic polymer foams, process for making, and articles made therefrom 14 1997
 
PACTIV LLC (14)
* 5,939,463 High productivity, low fugitive VOC emission foam process 3 1997
* 6,136,875 High productivity, low fugitive emission foams and foam processes 12 1999
7,166,248 Reduced VOC emission alkenyl aromatic polymer foams and processes 9 2003
7,814,647 Reinforced plastic foam cup, method of and apparatus for manufacturing same 3 2005
7,704,347 Reinforced plastic foam cup, method of and apparatus for manufacturing same 8 2005
7,694,843 Reinforced plastic foam cup, method of and apparatus for manufacturing same 15 2005
7,552,841 Reinforced plastic foam cup, method of and apparatus for manufacturing same 34 2005
7,536,767 Method of manufacturing a reinforced plastic foam cup 18 2005
7,818,866 Method of reinforcing a plastic foam cup 12 2006
7,918,005 Reinforced foam cup, method of and apparatus for manufacturing same 11 2009
8,828,170 Apparatus and method for manufacturing reinforced containers 2 2010
8,087,147 Method of reinforcing a plastic foam cup 14 2010
7,918,016 Reinforced plastic foam cup, method of and apparatus for manufacturing same 15 2010
8,622,208 Reinforced cup 1 2011
 
Nagoya Oilchemical Co., Ltd. (2)
* 5,328,723 Masking member 10 1991
* 5,206,069 Panel type masking member 1 1992
 
SOLO CUP OPERATING CORPORATION (1)
* 5,362,436 Polystyrene foam sheet useful for forming deep drawn articles, a process to produce those articles, and the deep drawn articles 38 1993
 
DAINIPPON INK AND CHEMICALS, INC. (1)
* 4,835,041 Biaxially stretched composite styrene resin sheet 3 1987
 
RENSSELAER POLYTECHNIC INSTITUTE (2)
* 5,334,450 Weatherable styrenic film structures with intermediate tie layer and laminates thereof 21 1992
* 5,306,548 Coextruded weatherable film structures and laminates 52 1992
 
FUJI SEAL INTERNATIONAL, INC. (1)
* 5,861,201 Multilayer label material 35 1997
* Cited By Examiner