Class 6 · Goods
Trademark class 6: Common metals
Class 6 covers common metals. There are 173,336 US trademark records in this class — here's who files in it, what state they're in, and how to search it.
Last updated Updated daily from USPTO data
At a glance
Who files in class 6
Registration status
Owner country
Status and country distributions are facet counts across the class, refreshed daily.
Registered marks in class 6
| Mark | Owner | Serial |
|---|---|---|
| KAYNAR | HUCK PATENTS, INC. | 73492693 |
| ASTRALLOY | SSAB US HOLDING, LLC | 73497962 |
| WEDGE | THORO'BRED RACING PLATE CO., INC. | 73513670 |
| STEEL MASTER | FUTURE STEEL HOLDINGS LTD. | 73520460 |
| ELBRODUR | CUNOVA GMBH | 72201231 |
| THE BRUTE | SARGENT & GREENLEAF, INC. | 73059311 |
Searching class 6 from the API
Scope any search to this class:
curl "https://api.markbase.co/search?q=acme&international_code=6"
Or screen a proposed name against just this class before you commit to it:
curl "https://api.markbase.co/clearance?mark=yourbrand&class=6"
Browse all 45 classes to find the ones matching what you sell.
Screen a name in class 6
No key needed on the free tier — check your brand against this class right now.
Frequently asked questions
What does trademark class 6 cover?
Class 6 covers common metals. It is one of the 45 Nice Classification classes and sits in the goods range (1–34).
How many trademarks are registered in class 6?
Markbase's index currently holds 173,336 US trademark records in class 6, counted from the USPTO's daily bulk data across both live and dead marks.
Do I need to file in class 6?
Only if your actual goods or services fall within common metals. Each class is a separate USPTO filing fee, and rights are generally limited to the classes you register in.
How do I check if a name is taken in class 6?
Call the clearance endpoint scoped to the class: GET /clearance?mark=yourname&class=6. It returns existing marks ranked by similarity with a risk level, so you can screen a name before committing to it.