Compression-molded article having multilayer structure

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 4904512
SERIAL NO

07009974

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A multilayer compression-molded article produced by compression-molding a composite plastic material. The composite plastic material comprises a first synthetic resin and a second synthetic resin in which the first synthetic resin surrounds substantially the entire second synthetic resin. The compression-molded article comprises a first resin layer molded from the first synthetic resin and a second resin layer molded from the second synthetic resin in which the first resin layer surrounds substantially the entire second resin layer. The composite plastic material is obtained by an extrusion apparatus which intermittently extrudes the second synthetic resin via a subsidiary extrusion flow passage into a main extrusion flow passage in which the first synthetic resin flows.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
TOYO SEIKAN KAISHA, LTD.MCLEAN, VA209

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kawaguchi, Kiyoshi Yokohama, JP 56 807
Yamada, Muneki Fujisawa, JP 32 772

Cited Art Landscape

Patent Info (Count) # Cites Year
 
ROBERT BOSCH GMBH (1)
7201123 Method and device for operating an internal combustion engine of a vehicle 3 2004
 
Sekisui Kaseihin Kogyo Kabushiki Kaisha (1)
* 4528221 Polystyrene foamed sheet suitable for forming 46 1983
 
H-C PLASTIC, INC., A DE CORP. (1)
* 4497765 Process for making a closure 131 1982
 
Pechiney Emballage Flexible Europe (2)
* 4525134 Apparatus for making a multi-layer injection blow molded container 57 1981
* 4568261 Apparatus for making a multi-layer injection blow molded container 32 1985
 
Ex-Cell-O Corporation (1)
* 4572856 Composite molded article and process using self-positioning laminated stiffener 30 1984
 
VAJS, HELENE (1)
* 4663226 Fire retardant 25 1986
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
KURARAY CO., LTD. (1)
* 7182986 Container cap 1 1998
 
TOYO SEIKAN KAISHA, LTD. (3)
* 5403529 Method for forming composite synthetic resin material 7 1993
* 2007/0251,945 Multi-Layer Structure and Method of Producing the Same 1 2005
8673197 Multi-layer structure and method of producing the same 0 2011
 
BERRY PLASTICS CORPORATION (1)
9682805 Closure for container 0 2013
 
OPTIZ, INC. (2)
* 9233511 Method of making stamped multi-layer polymer lens 0 2012
* 2013/0300,009 Method Of Making Stamped Multi-Layer Polymer Lens 1 2012
 
DEGUSSA AG (1)
* 5362570 Thermoplastic multilayer composites 15 1992
 
Owens-Illinois Plastic Products Inc. (1)
* 5011720 Multilayer containers and method of making same 13 1989
* Cited By Examiner