SO4 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 8, 2026
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Filing Velocity (24 Months)
Nice Class Distribution
Activity Timeline
No activity recorded yet.
Ownership & Assignment History
1 record| Date | From | To |
|---|---|---|
| Jan 30, 2026 |
CALCIUM PRODUCTS, INC.
|
CALCIUM PRODUCTS, LLC
AMES, IOWA
|
Recent Filings
| Serial No. | Mark | Filing Date | Status | Classes | Owner |
|---|---|---|---|---|---|
| 87633447 | SO4 | Oct 04, 2017 | Pending | 001 Chemicals | CALCIUM PRODUCTS, LLC |
Weekly visibility reports showing how ChatGPT mentions SO4, where you rank in the answer, the sentiment of the mention, and which sources ChatGPT cites.
FAQ: SO4 trademark portfolio
What trademarks does SO4 hold?
SO4 holds 1 USPTO trademark filings across 0 NICE classes. The largest concentration is in Class 1 (Chemicals). The most recent filings are registered to CALCIUM PRODUCTS, LLC.
How many trademarks does SO4 have at the USPTO?
WikiTrademarks tracks 1 USPTO trademark filings attributed to SO4. The brand has been actively filing since October 2017. The count updates daily as new filings are indexed from the USPTO bulk data feed.
In which NICE classes does SO4 file most often?
SO4'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 SO4 trademark?
The most recent filings under the SO4 mark are registered to CALCIUM PRODUCTS, LLC. Trademark ownership can shift through assignments — see the Ownership & Assignment History section on this page for the full chain of title.
Is SO4 expanding into new categories?
The current WikiTrademarks Expansion Score for SO4 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 SO4 trademark filings?
Click the Watch Brand button at the top of this page to add SO4 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.
More on this portfolio: Compare SO4 to another owner · Browse all NICE classes · Most valuable brands
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