Patents
US 8900449 B2: Magnetic filter for refining and chemical industries
- Granted
- 2014-12-02
- Filed
- 2012-03-13 application 13419407
- Type
- Utility · 22 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A magnetic filter employs a magnetic core assembly that incorporates a plurality of exchangeable holder sleeves, each enclosing permanent magnets. Neither the sleeves nor magnetic bars are mechanically fixed to the filter housing. The magnet bars and holder sleeves are individually accessible. The number of holder sleeves in the magnetic core assembly is flexible. The magnetic filter in equipped with a screen that partially encloses the elongated holder sleeves to treat streams that contain degradation sludge, iron containing particles or flakes, and non-magnetic polymeric materials. In operation, a feed stream initially contacts the magnetic core assembly where paramagnetic contaminants become deposited onto the exterior surface of the holder sleeves under direct influence of strong magnetic field generated by the magnet bars. The mesh screen cylinder subsequently captures non-magnetic and weakly magnetic contaminants of a certain size before the cleaned stream exits the magnetic filter.
Source: PVGPATDIS, file of 2026-04-10 (ipg141202.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 | Lobelville, TN | 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 |
|---|---|---|---|---|
| Tzong-Bin Lin | Kaohsiung, TW | 23 | PVGPATDIS, file of 2026-04-10 | |
| Fu-Ming Lee | Katy, TX | 19 | PVGPATDIS, file of 2026-04-10 | |
| Jeng-Cheng Lee | Kaohsiung, TW | 7 | PVGPATDIS, file of 2026-04-10 | |
| Fred G. Tahmassi | Plano, TX | 1 | PVGPATDIS, file of 2026-04-10 | |
| Benjamin Poi Chen | Taipei, TW | 1 | PVGPATDIS, file of 2026-04-10 | |
| Tsung-Min Chiu | Taipei, TW | 8 | 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 |
|---|---|---|---|
| B03C | Magnetic or electrostatic separation of solid materials from solid materials or fluids; separation by high-voltage electric fields | B03C1/286 | 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 |
|---|---|---|---|---|---|
| 2012-03-13 | Assignment Assignment of assignor's interest | CHEN, BENJAMIN POI signed 2012-03-06 CHIU, TSUNG-MIN signed 2012-03-06 LEE, FU-MING signed 2012-03-06 LEE, JENG-CHENG signed 2012-03-06 LIN, TZONG-BIN signed 2012-03-06 TAHMASSI, FRED G. signed 2012-03-09 WU, KUANG-YEU signed 2012-03-09 | CPC CORPORATION, TAIWAN TAIPEI AMT INTERNATIONAL, INC. PLANO, TX | 27858/472 | 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.