{
  "$type": "site.standard.document",
  "description": "A protruding knurling unit is proposed. The protruding knurling unit may include a first knurling portion extending at an incline with respect to a bottom surface, and a plurality of second knurling portions each extending at an incline with respect to the bottom surface. The first knurling portion…",
  "path": "/patents/1389163",
  "publishedAt": "2026-06-11T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60C13/001",
    "KUMHO TIRE CO., INC."
  ],
  "textContent": "A protruding knurling unit is proposed. The protruding knurling unit may include a first knurling portion extending at an incline with respect to a bottom surface, and a plurality of second knurling portions each extending at an incline with respect to the bottom surface. The first knurling portion may include a first knurling portion bottom. Each of the plurality of second knurling portions may include a second knurling portion bottom. A distance between the second knurling portion bottoms of the plurality of second knurling portions may be shorter than a length of the first knurling portion bottom.",
  "title": "PROTRUDING KNURLING UNIT AND TIRE INCLUDING THE SAME"
}