A AMERISORB holds 1 USPTO trademark filings across 0 NICE classes. The largest concentration is in Class 1 (Chemicals) with 1 filings. The WikiTrademarks Expansion Score is 1/100, low — the brand is focused on defending its existing categories rather than expanding.
USPTO data refreshed August 21, 2026
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Filing Velocity (24 Months)
Nice Class Distribution
Activity Timeline
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Recent Filings
| Serial No. | Mark | Filing Date | Status | Classes | Owner |
|---|---|---|---|---|---|
| 98454041 | A AMERISORB | Mar 18, 2024 | Registered | 001 Chemicals | Calgon Carbon Corporation |
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FAQ: A AMERISORB trademark portfolio
What trademarks does A AMERISORB hold?
A AMERISORB holds 1 USPTO trademark filings across 0 NICE classes. The largest concentration is in Class 1 (Chemicals). The most recent filings are registered to Calgon Carbon Corporation.
How many trademarks does A AMERISORB have at the USPTO?
WikiTrademarks tracks 1 USPTO trademark filings attributed to A AMERISORB. The brand has been actively filing since March 2024. The count updates daily as new filings are indexed from the USPTO bulk data feed.
In which NICE classes does A AMERISORB file most often?
A AMERISORB's most active class is NICE Class 1 (Chemicals), with 1 filings. The full distribution across all 0 classes is shown in the Nice Class Distribution panel on this page.
Who owns the A AMERISORB trademark?
The most recent filings under the A AMERISORB mark are registered to Calgon Carbon Corporation. Trademark ownership can shift through assignments — see the Ownership & Assignment History section on this page for the full chain of title.
Is A AMERISORB expanding into new categories?
The current WikiTrademarks Expansion Score for A AMERISORB is 1 out of 100, which is low — the brand is focused on defending its existing categories rather than expanding. The score combines NICE class breadth, filing velocity, and the rate of cross-class movement from the brand's filing history.
How can I track new A AMERISORB trademark filings?
Click the Watch Brand button at the top of this page to add A AMERISORB to your Watchlist. New filings show up on your WikiTrademarks dashboard within 24 to 48 hours of being public, alongside any class expansions, status changes, or assignment events.
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