Trademarks
CLEAR-BLOCK
- Serial number
- 86063897
- Registration number
- 4521329
- Filed
- 2013-09-13
- Registered
- 2014-04-29
- Status
- Registration cancelled 2020-12-04 (USPTO status code 710, 2020-12-04; as of the dataset)
- Classes
- 001
- Elsewhere
- USPTO TSDR record (current status) ↗
- Source
- TRCFECO2, file of 2024-03-27
Goods and services
Chemical fluid, namely a temporary plugging agent for controlling flow of fluid in hydrocarbon recovery
Owners
| Owner | Role | Entity | Place | Also on furp.org | Source |
|---|---|---|---|---|---|
| Clearwater Interntional L.L.C. | Original applicant, Owner at publication, Original registrant | Corporation | Houston, TX | TRCFECO2, file of 2024-03-27 | |
| LUBRIZOL OILFIELD SOLUTIONS, INC. | New owner after registration | Corporation | WICKLIFFE, OH | LUBRIZOL OILFIELD SOLUTIONS, INC. State business registration EXACT high confidence: identical full name and state | TRCFECO2, file of 2024-03-27 |
Assignment history
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2015-06-11 | Assignment Assigns the entire interest | LUBRIZOL OILFIELD CHEMISTRY, LLC | LUBRIZOL OILFIELD SOLUTIONS, INC. WICKLIFFE, OH | 5550/438 | TRASECO, file of 2026-09-29 |
| 2015-06-08 | Name change Change of name | CLEARWATER INTERNATIONAL, L.L.C. | LUBRIZOL OILFIELD CHEMISTRY, LLC HOUSTON, TX | 5547/850 | TRASECO, file of 2026-09-29 |
USPTO bulk data: the Trademark Case Files Dataset (TRCFECO2; the latest release, March 2024, runs through 2023) for marks, owners, classes and goods and services; the Trademark Assignment Dataset (TRASECO) for assignments. Marks filed in the last 20 years, plus older marks still registered. Status here is read from the dataset’s dates and status code; TSDR has the current status. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.