Patents
US 7909098 B2: Process for recovering heavy oil utilizing one or more membranes
- Granted
- 2011-03-22
- Filed
- 2009-06-19 application 12488118
- Type
- Utility · 25 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
An oil recovery process utilizes one or more membranes to remove silica and/or oil from produced water. In one method, the process includes separating oil from produced water and precipitating silica. The produced water having the precipitated silica is directed to a membrane, such as a ceramic membrane, which removes the precipitated silica from the produced water. In some cases, residual oil is present and is also removed by the membrane.
Source: PVGPATDIS, file of 2026-04-10 (ipg110322.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| HPD, LLC 8 patents | US company or organization | Plainfield, IL | HPD, LLC State business registration EXACT high confidence: identical full name and state | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Keith R. Minnich | Pewaukee, WI | 11 | PVGPATDIS, file of 2026-04-10 | |
| Kashi Banerjee | Dorpsstraat, PA | 17 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| E21B | Earth or rock drilling; obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells | E21B43/24 | PVGPATDIS, file of 2026-04-10 |
| B01D | Separation | B01D9/0036 | PVGPATDIS, file of 2026-04-10 |
| C02F | Treatment of water, waste water, sewage, or sludge | C02F9/00 | 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 |
|---|---|---|---|---|---|
| 2015-01-28 | Name change Change of name | VEOLIA WATER SOLUTIONS & TECHNOLOGIES NORTH AMERICA, INC. signed 2014-12-19 | VEOLIA WATER TECHNOLOGIES, INC. MOON TOWNSHIP, PA | 34827/299 | ECORSEXC, file of 2026-09-25 |
| 2013-01-10 | Assignment Assignment of assignor's interest | HPD, LLC signed 2012-12-28 | VEOLIA WATER SOLUTIONS & TECHNOLOGIES NORTH AMERICA, INC. MOON TOWNSHIP, PA | 29601/575 | PASDL, file of 2026-10-15 |
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.