QC-21 WELL CLEANER holds 1 USPTO trademark filings across 0 NICE classes. The largest concentration is in Class 3 (Cosmetics & Cleaning) with 1 filings. The WikiTrademarks Expansion Score is 0/100, low — the brand is focused on defending its existing categories rather than expanding.
USPTO data refreshed June 17, 2026
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Sign in to claimHow is QC-21 WELL CLEANER filing trademarks, and where is the portfolio expanding?
Filing Velocity (24 Months)
Nice Class Distribution
Activity Timeline
No activity recorded yet.
Ownership & Assignment History
4 records| Date | From | To |
|---|---|---|
| Mar 22, 2017 |
LAYNE CHRISTENSEN COMPANY
BENCO CORPORATION OF AMERICA-FOUNDATION...
CHRISTENSEN BOYLES CORPORATION
INLINER TECHNOLOGIES, LLC
LAYNE HEAVY CIVIL, INC.
LINER PRODUCTS, LLC
|
PNC BANK, NATIONAL ASSOCIATION
PITTSBURGH, PENNSYLVANIA
|
| Mar 9, 2015 |
LAYNE CHRISTENSEN COMPANY
BENCOR CORPORATION OF AMERICA-FOUNDATION...
INLINER TECHNOLOGIES, LLC
LAYNE HEAVY CIVIL, INC.
LINER PRODUCTS, LLC
|
U.S. BANK NATIONAL ASSOCIATION
NASHVILLE, TENNESSEE
|
| Feb 19, 2015 |
LAYNE CHRISTENSEN COMPANY
BENCOR CORPORATION OF AMERICA-FOUNDATION...
INLINER TECHNOLOGIES, LLC
LAYNE HEAVY CIVIL, INC.
LINER PRODUCTS, LLC
|
PNC BANK, NATIONAL ASSOCIATION
PITTSBURGH, PENNSYLVANIA
|
| Apr 16, 2014 |
LAYNE CHRISTENSEN COMPANY
BENCOR CORPORATION OF AMERICA-FOUNDATION...
INLINER TECHNOLOGIES, LLC
LAYNE HEAVY CIVIL, INC.
|
PNC BANK, NATIONAL ASSOCIATION
PITTSBURGH, PENNSYLVANIA
|
Recent Filings
| Serial No. | Mark | Filing Date | Status | Classes | Owner |
|---|---|---|---|---|---|
| 75011275 | QC-21 WELL CLEANER | Oct 27, 1995 | Abandoned | 003 Cosmetics & Cleaning | LAYNE CHRISTENSEN COMPANY |
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FAQ: QC-21 WELL CLEANER trademark portfolio
What trademarks does QC-21 WELL CLEANER hold?
QC-21 WELL CLEANER holds 1 USPTO trademark filings across 0 NICE classes. The largest concentration is in Class 3 (Cosmetics & Cleaning). The most recent filings are registered to LAYNE CHRISTENSEN COMPANY.
How many trademarks does QC-21 WELL CLEANER have at the USPTO?
WikiTrademarks tracks 1 USPTO trademark filings attributed to QC-21 WELL CLEANER. The brand has been actively filing since October 1995. The count updates daily as new filings are indexed from the USPTO bulk data feed.
In which NICE classes does QC-21 WELL CLEANER file most often?
QC-21 WELL CLEANER's most active class is NICE Class 3 (Cosmetics & Cleaning), with 1 filings. The full distribution across all 0 classes is shown in the Nice Class Distribution panel on this page.
Who owns the QC-21 WELL CLEANER trademark?
The most recent filings under the QC-21 WELL CLEANER mark are registered to LAYNE CHRISTENSEN COMPANY. Trademark ownership can shift through assignments — see the Ownership & Assignment History section on this page for the full chain of title.
Is QC-21 WELL CLEANER expanding into new categories?
The current WikiTrademarks Expansion Score for QC-21 WELL CLEANER is 0 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 QC-21 WELL CLEANER trademark filings?
Click the Watch Brand button at the top of this page to add QC-21 WELL CLEANER 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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