Patents by Inventor Chang-Sub Son

Chang-Sub Son 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: 8403592
    Abstract: The present invention provides a grass protection mat which can be used for protection of grass in a golf course, a grass field, and a park lawn, or be used for growth of the grass. The grass protection mat includes a body member constituting grass penetrating spaces, protruding pillars formed at upper portion of the body member, lug members formed at lower portion of the body member, and an outer frame provided at outer wall of the body member. The grass protection mat further includes sinking prevention means provided across the grass penetrating spaces formed at the lower portion of the mat, elastically deformable sinking prevention means, mat sliding prevention means provided to the sinking prevention means, and sliding prevention means.
    Type: Grant
    Filed: August 24, 2007
    Date of Patent: March 26, 2013
    Inventor: Chang Sub Son
  • Patent number: 8128311
    Abstract: A grass protection mat and a mat assembly having the same are provided. The grass protection mat of the invention includes a body made of polygonal portions, pillars protruded upward from the body, buffer wings protruded upward from the body between the pillars for distributing weights, an outer frame at the periphery of the body, lug members protruded from lower parts of the body and the outer frame. The mat also includes slide-type hooking means laterally protruded for connection of the mats, an opening formed at the inner surface of the outer frame. The mat assembly includes various forms of mat fastening members for connecting the grass protection mats. The invention facilitates connection of the mats and enhances assemblability of the mat assembly, effectively preventing sinking of the mats into the ground, thereby maintaining protection of grass.
    Type: Grant
    Filed: October 12, 2005
    Date of Patent: March 6, 2012
    Assignee: Chang-Sub Son
    Inventors: Chang-Sub Son, Sang-Geun Kim
  • Publication number: 20100293848
    Abstract: The present invention provides a grass protection mat which can be used for protection of grass in a golf course, a grass field, and a park lawn, or be used for growth of the grass. The grass protection mat includes a body member constituting grass penetrating spaces, protruding pillars formed at upper portion of the body member, lug members formed at lower portion of the body member, and an outer frame provided at outer wall of the body member. The grass protection mat further includes sinking prevention means provided across the grass penetrating spaces formed at the lower portion of the mat, elastically deformable sinking prevention means, mat sliding prevention means provided to the sinking prevention means, and sliding prevention means.
    Type: Application
    Filed: August 24, 2007
    Publication date: November 25, 2010
    Inventor: Chang Sub Son
  • Publication number: 20100024293
    Abstract: A grass protection mat, used for protecting grass on golf courses, grass playing fields, park lawns, etc., or for promoting growth of grass, is provided. The grass protection mat is fixed to a ground surface through a mat anchoring member, and includes a body provided with a grass passage, a projecting column provided at a top of the body, a lug provided at a bottom of the body, and a mat ground anchoring means connected to the body, and configured with a portion to which the mat anchoring member is fixed upon mat installation and disposed at least below the body. The grass protection mat, due to its ground anchoring portions being disposed in closest possible proximity to the ground surface to improve anchoring to the ground when the ground anchoring portions are pressed during on-site installation, can offer superior results including effective prevention of being lifted, deformed, and disconnected.
    Type: Application
    Filed: July 21, 2009
    Publication date: February 4, 2010
    Inventor: Chang-sub Son
  • Publication number: 20080052986
    Abstract: A grass protection mat and a mat assembly having the same are provided. The grass protection mat of the invention includes a body made of polygonal portions, pillars protruded upward from the body, buffer wings protruded upward from the body between the pillars for distributing weights, an outer frame at the periphery of the body, lug members protruded from lower parts of the body and the outer frame. The mat also includes slide-type hooking means laterally protruded for connection of the mats, an opening formed at the inner surface of the outer frame. The mat assembly includes various forms of mat fastening members for connecting the grass protection mats. The invention facilitates connection of the mats and enhances assemblability of the mat assembly, effectively preventing sinking of the mats into the ground, thereby maintaining protection of grass.
    Type: Application
    Filed: October 12, 2005
    Publication date: March 6, 2008
    Applicant: Chang-Sub SON
    Inventors: Chang-Sub Son, Sang-Geun Kim