Patents by Inventor Eiji Nagara

Eiji Nagara 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).

  • Sheet-form structure of expandable thermoplastic resin, thermoplastic resin foam and methods for manufacturing thereof
    Patent number: 7048879
    Abstract: A sheet-form structure of expandable thermoplastic resin is provided which is capable of undergoing a pseudo-one-dimensional expansion in its thickness direction and which enables manufacture of thermoplastic resin foams having reduced variations in thickness and weight precisions, increased compressive strength, and excellent properties such as surface smoothness. A method of manufacturing the sheet-form structure, as well as such thermoplastic resin foams, are also provided. A sheet-form structure 1 of expandable thermoplastic resin including granules 2 of expandable thermoplastic resin arranged generally uniformly for integral connection thereof through a thin film 3 of expandable thermoplastic resin.
    Type: Grant
    Filed: December 6, 2002
    Date of Patent: May 23, 2006
    Assignee: Sekisui Chemical Co., Ltd.
    Inventors: Tomoyuki Kobayashi, Kenji Miyazaki, Eiji Nagara, Michiaki Sasayama, Mitsuo Okubo
  • Sheet-form structure of expandable thermoplastic resin, thermoplastic resin foam and methods for manufacturing thereof
    Patent number: 6620495
    Abstract: A sheet-form structure of expandable thermoplastic resin is provided which is capable of undergoing a pseudo-one-dimensional expansion in its thickness direction and which enables manufacture of thermoplastic resin foams having reduced variations in thickness and weight precisions, increased compressive strength, and excellent properties such as surface smoothness. A method of manufacturing the sheet-form structure, as well as such thermoplastic resin foams, are also provided. A sheet-form structure 1 of expandable thermoplastic resin including granules 2 of expandable thermoplastic resin arranged generally uniformly for integral connection thereof through a thin film 3 of expandable thermoplastic resin.
    Type: Grant
    Filed: August 17, 2000
    Date of Patent: September 16, 2003
    Assignee: Sekisui Chemical Co., Ltd.
    Inventors: Tomoyuki Kobayashi, Kenji Miyazaki, Eiji Nagara, Michiaki Sasayama, Mitsuo Okubo
  • Sheet-form structure of expandable thermoplastic resin, thermoplastic resin foam and methods for manufacturing thereof
    Publication number: 20030044594
    Abstract: A sheet-form structure of expandable thermoplastic resin is provided which is capable of undergoing a pseudo-one-dimensional expansion in its thickness direction and which enables manufacture of thermoplastic resin foams having reduced variations in thickness and weight precisions, increased compressive strength, and excellent properties such as surface smoothness. A method of manufacturing the sheet-form structure, as well as such thermoplastic resin foams, are also provided.
    Type: Application
    Filed: June 3, 2002
    Publication date: March 6, 2003
    Inventors: Tomoyuki Kobayashi, Kenji Miyazaki, Eiji Nagara, Michiaki Sasayama, Mitsuo Okubo
  • Foamable thermoplastic sheet-like synthetic resin, thermoplastic foamed resin and their production method
    Patent number: 6399189
    Abstract: A sheet-form structure of expandable thermoplastic resin is provided which is capable of undergoing a pseudo-one-dimensional expansion in its thickness direction and which enables manufacture of thermoplastic resin foams having reduced variations in thickness and weight precisions, increased compressive strength, and excellent properties such as surface smoothness. A method of manufacturing the sheet-form structure, as well as such thermoplastic resin foams, are also provided. A sheet-form structure 1 of expandable thermoplastic resin including granules 2 of expandable thermoplastic resin arranged generally uniformly for integral connection thereof through a thin film 3 of expandable thermoplastic resin.
    Type: Grant
    Filed: August 25, 1998
    Date of Patent: June 4, 2002
    Assignee: Sekisui Chemical Co., Ltd.
    Inventors: Tomoyuki Kobayashi, Kenji Miyazaki, Eiji Nagara, Michiaki Sasayama, Mitsuo Okubo
  • FOAMABLE THERMOPLASTIC SHEET-LIKE SYNTHETIC RESIN, THERMOPLASTIC FOAMED RESIN AND THEIR PRODUCTION METHOD
    Publication number: 20020064641
    Abstract: A sheet-form structure of expandable thermoplastic resin is provided which is capable of undergoing a pseudo-one-dimensional expansion in its thickness direction and which enables manufacture of thermoplastic resin foams having reduced variations in thickness and weight precisions, increased compressive strength, and excellent properties such as surface smoothness. A method of manufacturing the sheet-form structure, as well as such thermoplastic resin foams, are also provided.
    Type: Application
    Filed: August 25, 1998
    Publication date: May 30, 2002
    Inventors: TOMOYUKI KOBAYASHI, KENJI MIYAZAKI, EIJI NAGARA, MICHIAKI SASAYAMA, MITSUO OKUBO