{
  "$type": "site.standard.document",
  "description": "A pneumatic tire 1 has a noise damper 20 made of a porous material and fixed to a tire inner cavity surface 17 of the tread portion 2. In the noise damper, a ratio H1/H2 of a first hardness H1 at 25% compression load measured in accordance with Japanese Industrial Standard JIS K6400-2 in an…",
  "path": "/patents/1420532",
  "publishedAt": "2024-04-24T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60C19/002",
    "SUMITOMO RUBBER IND [JP]"
  ],
  "textContent": "A pneumatic tire 1 has a noise damper 20 made of a porous material and fixed to a tire inner cavity surface 17 of the tread portion 2. In the noise damper, a ratio H1/H2 of a first hardness H1 at 25% compression load measured in accordance with Japanese Industrial Standard JIS K6400-2 in an atmosphere of 23 degrees Celsius and a second hardness H2 at 25% compression load measured in accordance with Japanese Industrial Standard JIS K6400-2 in an atmosphere of 50 degrees Celsius is 2.0 or less.",
  "title": "PNEUMATIC TIRE"
}