Patents
US 9663705 B2: Method for resolving emulsions in enhanced oil recovery operations
- Granted
- 2017-05-30
- Filed
- 2015-05-26 application 14721805
- Type
- Utility · 20 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Disclosed and claimed is a method of demulsifying an emulsion comprising water and oil. The method comprises adding an effective amount of a composition comprising at least one substantially fully quaternized ammonium adduct of polyephalohydrin that has a molecular weight from about 500 Da to about 2,500 Da.
Source: PVGPATDIS, file of 2026-04-10 (ipg170530.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Nalco Company LLC 271 patents | US company or organization | Naperville, IL | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Duy T. Nguyen | Sugar Land, TX | 34 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| C09K | Materials for miscellaneous applications, not provided for elsewhere | C09K8/588 | PVGPATDIS, file of 2026-04-10 |
| B01D | Separation | B01D17/047 | PVGPATDIS, file of 2026-04-10 |
| C10G | Cracking hydrocarbon oils; production of liquid hydrocarbon mixtures, e.g. by destructive hydrogenation, oligomerisation, polymerisation ; recovery of hydrocarbon oils from oil-shale, oil-sand, or gases; refining mixtures mainly consisting of hydrocarbons; reforming of naphtha; mineral waxes | C10G33/04 | PVGPATDIS, file of 2026-04-10 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2025-07-17 | Release of security interest Release of security interest in patents | JPMORGAN CHASE BANK, N.A. signed 2025-07-16 | CHAMPIONX LLC THE WOODLANDS, TX APERGY ESP SYSTEMS, LLC THE WOODLANDS, TX APERGY BMCS ACQUISITION CORP THE WOODLANDS, TX HARBISON-FISCHER, INC. THE WOODLANDS, TX NORRIS RODS, INC., THE WOODLANDS, TX NORRIS RODS, INC., THE WOODLANDS, TX NORRISEAL-WELLMARK, INC. THE WOODLANDS, TX PCS FERGUSON, INC. THE WOODLANDS, TX QUARTZDYNE, INC. THE WOODLANDS, TX US SYNTHETIC CORPORATION THE WOODLANDS, TX | 72004/19 | PASDL, file of 2026-10-15 |
| 2022-06-07 | Release of security interest Release of security interest | BANK OF AMERICA, N.A. signed 2022-06-07 | CHAMPIONX USA INC. SUGAR LAND, TX | 60304/267 | PASDL, file of 2026-10-15 |
| 2020-09-22 | Assignment Assignment of assignor's interest | ECOLAB USA INC. signed 2020-06-03 | CHAMPIONX USA INC. SUGAR LAND, TX | 53849/537 | PASDL, file of 2026-10-15 |
| 2020-06-05 | Security interest Security interest Security interest | CHAMPIONX USA INC. signed 2020-06-03 | JPMORGAN CHASE BANK, N.A. BROOKLYN, NY | 53250/1 | PASDL, file of 2026-10-15 |
| 2020-06-05 | Security interest Security interest Security interest | CHAMPIONX USA INC. signed 2020-06-03 | BANK OF AMERICA, N.A. CHARLOTTE, NC | 52848/368 | PASDL, file of 2026-10-15 |
| 2020-06-01 | Name change Change of name | NALCO COMPANY LLC signed 2020-02-01 | CHAMPIONX LLC SUGAR LAND, TX | 52800/358 | ECORSEXC, file of 2026-09-25 |
| 2020-05-30 | Name change Change of name | NALCO COMPANY signed 2015-12-31 | NALCO COMPANY LLC NAPERVILLE, IL | 52797/794 | ECORSEXC, file of 2026-09-25 |
| 2017-08-22 | Name change Change of name | NALCO COMPANY signed 2015-12-21 | NALCO COMPANY LLC NAPERVILLE, IL | 43633/992 | ECORSEXC, file of 2026-09-25 |
| 2017-08-22 | Assignment Assignment of assignor's interest | NALCO COMPANY LLC signed 2017-02-27 | ECOLAB USA INC. ST. PAUL, MN | 43357/541 | ECORSEXC, file of 2026-09-25 |
| 2015-11-24 | Assignment Assignment of assignor's interest | NGUYEN, DUY T. signed 2010-06-24 | NALCO COMPANY NAPERVILLE, IL | 37134/467 | ECORSEXC, file of 2026-09-25 |
Documents recorded with the USPTO Assignment Recordation Branch that list this patent. A security interest is a lender’s claim on the patent as collateral; a release ends it.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. 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.