Patents
US 8680358 B1: Methods for removing heavy hydrocarbons from extractive solvents
- Granted
- 2014-03-25
- Filed
- 2013-02-27 application 13779704
- Type
- Utility · 27 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A method for cross connecting the lean solvent supply lines between the liquid liquid extraction (LLE) and the extractive distillation (ED) processes thereby using the LLE column as the outlet for removing accumulated heavy hydrocarbons (HCs) and polymeric materials from the solvent loop of both processes to maintain their solvent performance. The unique capabilities of the LLE column in rejecting heavy HCs from the solvent into a raffinate product stream that leaves the system enable the removal of the accumulated heavy HCs and polymeric materials from the closed solvent loop of the ED process when their lean solvent loop are cross connected. Cross connection requires minimum equipment change. In the revamped system, the solvent recovery column (SRC) in LLE process supplies lean solvent for the extractive distillation column while the SRC of the ED process supplies lean solvent for LLE column.
Source: PVGPATDIS, file of 2026-04-10 (ipg140325.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| 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 |
| CPC CORPORATION, TAIWAN 57 patents | Foreign company or organization | Taipei, TW | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Fu-Ming Lee | Plano, TX | 19 | PVGPATDIS, file of 2026-04-10 | |
| Tzong-Bin Lin | Kaohsiung, TW | 23 | PVGPATDIS, file of 2026-04-10 | |
| Kuang-Yeu Wu | Plano, TX | 22 | PVGPATDIS, file of 2026-04-10 | |
| Jyh-Haur Hwang | Kaohsiung, TW | 10 | PVGPATDIS, file of 2026-04-10 | |
| Tsung-Min Chiu | Kaohsiung, TW | 8 | PVGPATDIS, file of 2026-04-10 | |
| Ciputra Jap | Plano, TX | 1 | PVGPATDIS, file of 2026-04-10 | |
| Yung-Sheng Ho | Kaohsiung, TW | 6 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| 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 | C10G21/00 | PVGPATDIS, file of 2026-04-10 |
| B01D | Separation | B01D11/0488 | 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 |
|---|---|---|---|---|---|
| 2013-04-26 | Assignment Assignment of assignor's interest | LEE, FU-MING signed 2013-04-18 LIN, TZONG-BIN signed 2013-04-19 WU, KUANG-YEU signed 2013-04-18 HWANG, JYH-HAUR signed 2013-04-19 CHIU, TSUNG-MIN signed 2013-04-19 JAP, CIPUTRA signed 2013-04-18 HO, YUNG-SHENG signed 2013-04-23 | AMT INTERNATIONAL, INC. PLANO, TX CPC CORPORATION, TAIWAN TAIPEI | 30291/37 | 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.