Patents by Inventor Jeong Ja Jeon

Jeong Ja Jeon 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).

  • Pipe made of synthetic resin having a plurality of internal tubes
    Patent number: 9309997
    Abstract: The present invention relates to a pipe made of synthetic resin having a plurality of internal tubes, wherein silicone coating layers are formed on the respective inner circumferential surfaces of the plurality of internal tubes which are accommodated in an external tube, such that long optical fibers or electrical wires or the like inserted in the same can be readily and easily accommodated while water repellency is maintained, and failure to fuse or deformation of any of the side surfaces of the internal tubes, which are fused to the inner circumferential surface of the external tube, can be prevented when the internal tubes are formed integrally on the external tube, and the plurality of internal tubes can be stably inserted into and joined by fusing onto the inner circumferential surface of the external tube, and deformation due to temperature differences between the external tube and the internal tubes during cooling can be prevented while the internal tubes are inserted into and joined by fusing onto th
    Type: Grant
    Filed: February 23, 2011
    Date of Patent: April 12, 2016
    Inventor: Jeong Ja Jeon
  • PIPE MADE OF SYNTHETIC RESIN HAVING A PLURALITY OF INTERNAL TUBES
    Publication number: 20130199654
    Abstract: The present invention relates to a pipe made of synthetic resin having a plurality of internal tubes, wherein silicone coating layers are formed on the respective inner circumferential surfaces of the plurality of internal tubes which are accommodated in an external tube, such that long optical fibers or electrical wires or the like inserted in the same can be readily and easily accommodated while water repellency is maintained, and failure to fuse or deformation of any of the side surfaces of the internal tubes, which are fused to the inner circumferential surface of the external tube, can be prevented when the internal tubes are formed integrally on the external tube, and the plurality of internal tubes can be stably inserted into and joined by fusing onto the inner circumferential surface of the external tube, and deformation due to temperature differences between the external tube and the internal tubes during cooling can be prevented while the internal tubes are inserted into and joined by fusing onto th
    Type: Application
    Filed: February 23, 2011
    Publication date: August 8, 2013
    Inventor: Jeong Ja Jeon