Patents by Inventor Dong-gyu Im

Dong-gyu Im 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).

  • Patent number: 8303750
    Abstract: The present invention relates to a method for manufacturing an air mat that reduces a thickness of a cushion part by means of both slush molding and rotational molding, enhances a bonding efficiency between a lower sheet and the cushion part, and obviates the need of any separate communicating members for forming the communicating passageways for a plurality of air pockets of the cushion part, thereby simplifying manufacturing processes.
    Type: Grant
    Filed: September 14, 2007
    Date of Patent: November 6, 2012
    Assignee: Ceragem Co., Ltd
    Inventors: Dong-Gyu Im, Gin-Kyu Choi
  • Patent number: 8052409
    Abstract: The present invention relates to a method for manufacturing an air mat that reduces the number of manufacturing processes by means of rotational molding, while preventing the generation of defective products, to a device for molding an air mat, and to an air mat manufactured and molded by the method and device. In a method for manufacturing an air mat formed in such a manner as to integrally couple a cushion part having a plurality of air bags arranged therein for containing air at the insides thereof with a plate-shaped lower sheet disposed on the lower surface of the cushion part, the method includes the steps of: preparing a lower mold having a plurality of air bag molding recesses having given depths arranged at given intervals thereon, for molding the cushion part of the air mat.
    Type: Grant
    Filed: September 2, 2010
    Date of Patent: November 8, 2011
    Assignee: Ceragem Co., Ltd
    Inventors: Dong-gyu Im, Gin-kyu Choi
  • Publication number: 20100330222
    Abstract: The present invention relates to a method for manufacturing an air mat that reduces the number of manufacturing processes by means of rotational molding, while preventing the generation of defective products, to a device for molding an air mat, and to an air mat manufactured and molded by the method and device. In a method for manufacturing an air mat formed in such a manner as to integrally couple a cushion part having a plurality of air bags arranged therein for containing air at the insides thereof with a plate-shaped lower sheet disposed on the lower surface of the cushion part, the method includes the steps of: preparing a lower mold having a plurality of air bag molding recesses having given depths arranged at given intervals thereon, for molding the cushion part of the air mat.
    Type: Application
    Filed: September 2, 2010
    Publication date: December 30, 2010
    Applicant: CERAGEM CO., LTD.
    Inventors: Dong-gyu IM, Gin-kyu CHOI
  • Publication number: 20100325808
    Abstract: The present invention relates to a method for manufacturing an air mat that reduces the number of manufacturing processes by means of rotational molding, while preventing the generation of defective products, to a device for molding an air mat, and to an air mat manufactured and molded by the method and device. In a method for manufacturing an air mat formed in such a manner as to integrally couple a cushion part having a plurality of air bags arranged therein for containing air at the insides thereof with a plate-shaped lower sheet disposed on the lower surface of the cushion part, the method includes the steps of: preparing a lower mold having a plurality of air bag molding recesses having given depths arranged at given intervals thereon, for molding the cushion part of the air mat.
    Type: Application
    Filed: September 2, 2010
    Publication date: December 30, 2010
    Applicant: CERAGEM CO., LTD.
    Inventors: Dong-gyu IM, Gin-kyu CHOI
  • Patent number: 7807095
    Abstract: The present invention relates to a method for manufacturing an air mat that reduces the number of manufacturing processes by means of rotational molding, while preventing the generation of defective products, to a device for molding an air mat, and to an air mat manufactured and molded by the method and device. In a method for manufacturing an air mat formed in such a manner as to integrally couple a cushion part having a plurality of air bags arranged therein for containing air at the insides thereof with a plate-shaped lower sheet disposed on the lower surface of the cushion part, the method includes the steps of: preparing a lower mold having a plurality of air bag molding recesses having given depths arranged at given intervals thereon, for molding the cushion part of the air mat.
    Type: Grant
    Filed: March 3, 2006
    Date of Patent: October 5, 2010
    Assignee: Ceragem Co., Ltd
    Inventors: Dong-gyu Im, Gin-kyu Choi
  • Publication number: 20080196167
    Abstract: The present invention relates to a method for manufacturing an air mat that reduces the number of manufacturing processes by means of rotational molding, while preventing the generation of defective products, to a device for molding an air mat, and to an air mat manufactured and molded by the method and device. In a method for manufacturing an air mat formed in such a manner as to integrally couple a cushion part having a plurality of air bags arranged therein for containing air at the insides thereof with a plate-shaped lower sheet disposed on the lower surface of the cushion part, the method includes the steps of: preparing a lower mold having a plurality of air bag molding recesses having given depths arranged at given intervals thereon, for molding the cushion part of the air mat.
    Type: Application
    Filed: March 3, 2005
    Publication date: August 21, 2008
    Inventors: Dong-gyu Im, Gin-kyu Choi