Trademarks
DESCO
- Serial number
- 72249849
- Registration number
- 827449
- Filed
- 1966-07-08
- Registered
- 1967-04-18 · renewed 2017-04-18
- Status
- Registered and renewed (USPTO status code 800, 2017-06-09; as of the dataset)
- Classes
- 006
- Elsewhere
- USPTO TSDR record (current status) ↗
- Source
- TRTDXFAP, file of 2026-04-20
Goods and services
DRILLING MUD VISCOSITY REDUCER
Owners
| Owner | Role | Entity | Place | Also on furp.org | Source |
|---|---|---|---|---|---|
| DRILLING SPECIALTIES COMPANY | Original registrant | Corporation | BARTLESVILLE, OK | TRTDXFAP, file of 2026-04-20 | |
| PHILLIPS PETROLEUM COMPANY | Owner (party code 40) | Corporation | BARTLESVILLE, OK | TRTDXFAP, file of 2026-04-20 | |
| CHEVRON PHILLIPS CHEMICAL COMPANY LP | Owner (party code 41) | Entity Code 13 | The Woodlands, TX | CHEVRON PHILLIPS CHEMICAL CO LP Form D issuer FUZZY medium confidence: same name (legal endings aside) and state | TRTDXFAP, file of 2026-04-20 |
Assignment history
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2006-02-08 | Merger Merger | DRILLING SPECIALTIES COMPANY | PHILLIPS PETROLEUM COMPANY BARTLESVILLE, OK | 3243/355 | TRASECO, file of 2026-09-29 |
| 2001-03-12 | Assignment Assigns the entire interest | PHILLIPS PETROLEUM COMPANY | CHEVRON PHILLIPS CHEMICAL COMPANY LP HOUSTON, TX | 2257/914 | TRASECO, file of 2026-09-29 |
| 1990-11-06 | Assignment Assigns the entire interest and the goodwill | PHILLIPS PETROLEUM COMPANY | DRILLING SPECIALTIES COMPANY BARTLESVILLE, OK | 762/850 | TRASECO, file of 2026-09-29 |
| 1970-12-11 | Assignment Assigns the entire interest and the goodwill | DRILLING SPECIALTIES COMPANY | PHILLIPS PETROLEUM COMPANY BARTLESVILLE, OK | 201/241 | 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.