Patents by Inventor Jeong-Saeng Ahn

Jeong-Saeng Ahn 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).

  • Segments for building spliced prestressed concrete girder and method of manufacturing the segments
    Patent number: 8806820
    Abstract: Provided are segments of a spliced prestressed concrete girder, which have improved structural integrity at joints, and a method of manufacturing the segments. The method of manufacturing the segments, which are combined to build the spliced prestressed concrete girder, includes: manufacturing one or more joint blocks, each having a first end that has a shear key and is to be spliced to an end of an adjacent segment and having a second end that is bonded to a segment body of the segment; and manufacturing the segment body by using the one or more joint blocks as one or more ends of a formwork in which the segment body is to be made and by casting and curing concrete in the formwork, wherein the one or more joint blocks are fixedly bonded to one or more ends of the segment body in the manufacturing of the segment body.
    Type: Grant
    Filed: April 5, 2006
    Date of Patent: August 19, 2014
    Assignee: Interconstec Co., Ltd.
    Inventor: Jeong-Saeng Ahn
  • Segments for building spliced prestressed concrete grider and method of manufacturing the segments
    Publication number: 20090064610
    Abstract: Provided are segments of a spliced prestressed concrete girder, which have improved structural integrity at joints, and a method of manufacturing the segments. The method of manufacturing the segments, which are combined to build the spliced prestressed concrete girder, includes: manufacturing one or more joint blocks, each having a first end that has a shear key and is to be spliced to an end of an adjacent segment and having a second end that is bonded to a segment body of the segment; and manufacturing the segment body by using the one or more joint blocks as one or more ends of a formwork in which the segment body is to be made and by casting and curing concrete in the formwork, wherein the one or more joint blocks are fixedly bonded to one or more ends of the segment body in the manufacturing of the segment body.
    Type: Application
    Filed: April 5, 2006
    Publication date: March 12, 2009
    Applicant: INTERCONSTEC CO., LTD.
    Inventor: Jeong-Saeng Ahn