Patents
US 8636907 B1: Sealed magnetic filter for hazardous operations and easy clean service
- Granted
- 2014-01-28
- Filed
- 2013-05-09 application 13890602
- Type
- Utility · 20 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A two-stage sealed magnetic filter continuously removes magnetic and non-magnetic contaminants from liquid process streams. Elongated non-magnetic holder sleeves encasing magnet bars attract magnetic contaminants while a screen cylinder captures non-magnetic contaminants. The magnet bars are accessible without having to open the interior of the housing to the environment. Thus, during maintenance, removing the magnet bars from the holder sleeves releases the magnetic contaminants that have adhered to the holder sleeves into the screen cylinder which partially encloses the holder sleeves. Contaminants are flushed out of the magnetic filter without exposing workers to potentially hazardous substances. Polymeric sludge occluded with iron compounds can be effectively removed from streams in refineries and chemical plants. The iron compounds are formed from carbon steel which is prevalent in plant machinery and that corrodes in the presence of acidic contaminants.
Source: PVGPATDIS, file of 2026-04-10 (ipg140128.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 |
|---|---|---|---|---|
| Tzong-Bin Lin | Kaohsiung, TW | 23 | PVGPATDIS, file of 2026-04-10 | |
| Fu-Ming Lee | Katy, TX | 19 | PVGPATDIS, file of 2026-04-10 | |
| Ming-Hsung Liu | Kaohsiung, TW | 1 | PVGPATDIS, file of 2026-04-10 | |
| Cheng-Tsung Hong | Kaohsiung, TW | 11 | PVGPATDIS, file of 2026-04-10 | |
| Yung-Sheng Ho | Kaohsiung, TW | 6 | PVGPATDIS, file of 2026-04-10 | |
| Kuang-Yeu Wu | Plano, TX | 22 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| B01D | Separation | B01D35/06 | PVGPATDIS, file of 2026-04-10 |
| B03C | Magnetic or electrostatic separation of solid materials from solid materials or fluids; separation by high-voltage electric fields | B03C1/284 | 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 |
|---|---|---|---|---|---|
| 2013-05-09 | Assignment Assignment of assignor's interest | LEE, FU-MING signed 2013-05-02 HO, YUNG-SHENG signed 2013-05-05 HONG, CHENG-TSUNG signed 2013-05-06 LIN, TZONG-BIN signed 2013-05-06 LIU, MING-HSUNG signed 2013-05-06 WU, KUANG-YEU signed 2013-05-08 | CPC CORPORATION, TAIWAN TAIPEI AMT INTERNATIONAL, INC. PLANO, TX | 30385/286 | 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.