Patents
US 9555364 B2: Acid gas scrubbing composition
- Granted
- 2017-01-31
- Filed
- 2013-08-14 application 13966404
- Type
- Utility · 21 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
This invention provides novel compositions comprising substituted polyamines as acid gas scrubbing solutions and methods of using the compositions in an industrial system. The invention relates to the use of such polyamine compounds in industrial processes to remove acidic contaminants from natural and industrial fluid streams, such as natural gas, combustion gas, natural gas, synthesis gas, biogas, and other industrial fluid streams. The compositions and methods of the invention are useful for removal, absorption, or sequestration of acidic contaminants and sulfide contaminants including CO2, H2S, RSH, CS2, COS, and SO2.
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 |
|---|---|---|---|---|
| Alan M. Blair | Southampton, GB | 8 | PVGPATDIS, file of 2026-04-10 | |
| Keith N. Garside | Winchester, GB | 8 | PVGPATDIS, file of 2026-04-10 | |
| William J. Andrews | Hillsboro, IL | 21 | PVGPATDIS, file of 2026-04-10 | |
| Kailas B. Sawant | Naperville, IL | 26 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| B01D | Separation | B01D53/1456 | PVGPATDIS, file of 2026-04-10 |
| C12M | Apparatus for enzymology or microbiology; apparatus for culturing microorganisms for producing biomass, for growing cells or for obtaining fermentation or metabolic products, i.e. bioreactors or fermenters | C12M47/18 | PVGPATDIS, file of 2026-04-10 |
| Y02P | Climate change mitigation technologies in the production or processing of goods | Y02P20/59 | 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 |
| 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 |
| 2013-09-06 | Assignment Assignment of assignor's interest | GARSIDE, KEITH N. signed 2013-08-02 BLAIR, ALAN M. signed 2013-08-05 ANDREWS, WILLIAM J. signed 2013-08-06 SAWANT, KAILAS B. signed 2013-08-07 | NALCO COMPANY NAPERVILLE, IL | 31149/758 | ECORSEXC, file of 2026-09-25 |
| 2013-08-19 | Assignment Assignment of assignor's interest | GARSIDE, KEITH N. signed 2013-08-02 BLAIR, ALAN M. signed 2013-08-05 ANDREWS, WILLIAM J. signed 2013-08-06 SAWANT, KAILAS B. signed 2013-08-07 | NALCO COMPANY NAPERVILLE, IL | 31034/162 | 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.