Patents
US 9555420 B2: Gas stream treatment process
- Granted
- 2017-01-31
- Filed
- 2010-04-08 application 12756491
- Type
- Utility · 20 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A process of treating a gas stream containing mercury is disclosed. The method comprises: applying a sorbent into said gas stream ahead of a particulate matter collection device, in order to adsorb at least a portion of a mercury containing compound, wherein said sorbent contains a composition comprising a compound having the following formula (SiO2)x(OH)yMzSaF: wherein M is at least one of the following metal or metalloid cations: boron, magnesium, aluminum, calcium, titanium, vanadium, manganese, iron, cobalt, nickel, copper, zinc, zirconium, molybdenum, palladium, silver, cadmium, tin, platinum, gold, and bismuth; wherein S is a sulfur-based species selected from at least one of the following: sulfide salts, dithiocarbamates, polymer-based dithiocarbamates, and polysulfide salts; wherein F optionally exists and said F is at least one of the following: a functionalized organosilane, a sulfur-containing organosilane, an amine-containing organosilane, and an alkyl-containing organosilane at a surface area coverage of 0.01-100%; and wherein the molar ratio of y/x is equal to 0.01-0.5, the molar ratio of x/z is equal to 3-300, and the molar ratio of a/z is 1-5.
Source: PVGPATDIS, file of 2026-04-10 (ipg170131.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 |
|---|---|---|---|---|
| Bruce A. Keiser | Plainfield, IL | 24 | PVGPATDIS, file of 2026-04-10 | |
| Nicholas S. Ergang | Glen Ellyn, IL | 23 | PVGPATDIS, file of 2026-04-10 | |
| Richard Mimna | Aurora, IL | 20 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| B03C | Magnetic or electrostatic separation of solid materials from solid materials or fluids; separation by high-voltage electric fields | B03C3/017 | PVGPATDIS, file of 2026-04-10 |
| B01D | Separation | B01D53/02 | 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 |
|---|---|---|---|---|---|
| 2017-06-28 | Assignment Assignment of assignor's interest | NALCO COMPANY LLC signed 2017-02-27 | ECOLAB USA INC. ST. PAUL, MN | 42851/27 | ECORSEXC, file of 2026-09-25 |
| 2010-04-30 | Assignment Assignment of assignor's interest | KEISER, BRUCE A. signed 2010-04-20 ERGANG, NICHOLAS S. signed 2010-04-22 MINMA, RICHARD signed 2010-04-22 | NALCO COMPANY\\ NAPERVILLE, IL | 24317/594 | 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.