Air purification

HarmonisedClass 40 · Treatment of MaterialsServices

"Air purification" is a harmonised Nice Class 40 term (treatment of materials). Of the offices Signa covers, the EUIPO and USPTO accept it as written.

Search Class 40 trademarksGet this data via the API
Data current as of October 28, 2026Source: TMclass
Covered offices accept this wording
2
Treatment of Materials
Class 40
Harmonised
Yes
Acceptance

Where this wording is accepted

Harmonised terms are wording offices have agreed to accept as written. These are the offices Signa covers that list this term.

About Class 40

See what Class 40 covers, who files most in it and how filings have changed.

API

Get this data via the API

Look up any goods or services term, check which offices accept it, and get filing-ready wording for a product with one request.

  • GET/v1/goods-services?class=40&q=air%20purification

    This term, its harmonisation and the offices that accept it

  • POST/v1/goods-services/suggest

    Filing-ready wording for a product description

  • GET/v1/classifications/{id}

    Every term in Class 40

Get API keyView docs
GET /v1/goods-services?class=40&q=air%20purification
curl "https://api.signa.so/v1/goods-services?class=40&q=air%20purification" \
  -H "Authorization: Bearer $SIGNA_API_KEY"
Response
{
  "term": "Air purification",
  "class_number": 40,
  "is_harmonised": true,
  "accepted_offices": [
    "EUIPO",
    "USPTO",
    "JPO",
    "KIPO",
    "CNIPA"
  ]
}