Patents
US 7871514 B2: Extractive distillation processes using water-soluble extractive solvents
- Granted
- 2011-01-18
- Filed
- 2008-12-12 application 12316405
- Type
- Utility · 30 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Extractive distillation processes whereby water-soluble extractive distillation (ED) solvents are regenerated and recovered employ improved operations of the extractive distillation column (EDC) so that polar hydrocarbons are recovered and purified from mixtures containing polar and less polar hydrocarbons and measurable amounts of hydrocarbons that are heavier than intended feedstock and/or polymers that are generated in the ED process. The improved process can effectively remove and recover the heavy hydrocarbons and/or remove polymer contaminants from the solvent in a closed solvent circulating loop through mild operating conditions with no additional process energy being expended. With the improved process, the overhead reflux of the EDC may be eliminated to further reduce energy consumption and to enhance the loading and performance within the upper portion of the EDC, especially when two liquid phases exists therein.
Source: PVGPATDIS, file of 2026-04-10 (ipg110118.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| CPC CORPORATION, TAIWAN 57 patents | Foreign company or organization | Taipei, TW | PVGPATDIS, file of 2026-04-10 | |
| AMT International Inc. 26 patents | US company or organization | Plano, TX | AMT INTERNATIONAL, INC. State business registration EXACT high confidence: identical full name and state | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Fu-Ming Lee | Katy, TX | 19 | PVGPATDIS, file of 2026-04-10 | |
| Tzong-Bin Lin | Chiayi, TW | 23 | PVGPATDIS, file of 2026-04-10 | |
| Jyh-Haur Hwang | Dali, TW | 10 | PVGPATDIS, file of 2026-04-10 | |
| Hung-Chung Shen | Chiayi, TW | 16 | PVGPATDIS, file of 2026-04-10 | |
| Kuang-Yeu Wu | Plano, TX | 22 | PVGPATDIS, file of 2026-04-10 | |
| Tsung-Min Chiu | Kaohsiung, TW | 8 | PVGPATDIS, file of 2026-04-10 | |
| Zong-Ying Chen | Not reported | 2 | PVGPATDIS, file of 2026-04-10 | |
| Tung-Hsiung Kuo | Tainan, TW | 3 | PVGPATDIS, file of 2026-04-10 | |
| Yu-Ming Wu | Guanmiao, TW | 8 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| B01D | Separation | B01D3/40 | 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 | C10G7/08 | 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 |
|---|---|---|---|---|---|
| 2008-12-12 | Assignment Assignment of assignor's interest | CHEN, ZONG-YING signed 2008-12-08 CHIU, TSUNG-MIN signed 2008-12-08 KUO, TUNG-HSIUNG signed 2008-12-08 LEE, FU-MING signed 2008-12-08 WU, KUANG-YEU signed 2008-12-08 WU, YU-MING signed 2008-12-08 HWANG, JYH-HAUR signed 2008-12-10 LIN, TZONG-BIN signed 2008-12-10 SHEN, HUNG-CHUNG signed 2008-12-10 | CPC CORPORATION, TAIWAN TAIPEI CITY AMT INTERNATIONAL, INC. PLANO, TX | 22036/807 | 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.