Trademarks
CLAYGUARD
- Serial number
- 86348007
- Registration number
- 4695824
- Filed
- 2014-07-25
- Registered
- 2015-03-03
- Status
- Registration cancelled 2025-09-19 (USPTO status code 710, 2025-09-19; as of the dataset)
- Classes
- 001
- Elsewhere
- USPTO TSDR record (current status) ↗
- Source
- TRTYRAP, file of 2026-04-03
Goods and services
Additive used to inhibit hydration and swelling of clay materials in oil and gas drilling, stimulation, or work over operations
Owners
| Owner | Role | Entity | Place | Also on furp.org | Source |
|---|---|---|---|---|---|
| Weatherford/Lamb, Inc. | Original applicant, Owner at publication, Original registrant | Corporation | Houston, TX | WEATHERFORD/LAMB, LLC State business registration FUZZY medium confidence: same name (legal endings aside) and state | TRTYRAP, file of 2026-04-03 |
| 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 | TRTYRAP, file of 2026-04-03 |
| THE LUBRIZOL CORPORATION | New owner after registration | Corporation | WICKLIFFE, OH | TRTYRAP, file of 2026-04-03 |
Assignment history
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2020-03-18 | Merger Merger effective 01/02/2018 | LUBRIZOL OILFIELD SOLUTIONS, INC. | THE LUBRIZOL CORPORATION WICKLIFFE, OH | 6894/585 | TRASECO, file of 2026-09-29 |
| 2016-11-11 | Assignment Assigns the entire interest | WEATHERFORD/LAMB, INC. | LUBRIZOL OILFIELD SOLUTIONS, INC. WICKLIFFE, OH | 5918/365 | 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.