Patents
US 9439247 B2: Electrode consumption monitoring system
- Granted
- 2016-09-06
- Filed
- 2012-11-07 application 13670981
- Type
- Utility · 17 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A method and system automatically determines when an electrode add event occurs in an electric arc furnace having a plurality of electrode columns, each carried by an electrode positioning system. Data is received correlating to the harmonic distortion of the electrical current output to the plurality of electrode columns. Data is also received correlating to control pressures in the electrode positioning systems. Steady state control pressure data is captured when the harmonic distortion data indicates a steady state condition. An electrode add event is thereafter determined when a pressure spike is identified in the steady state control pressure data.
Source: PVGPATDIS, file of 2026-04-10 (ipg160906.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| GrafTech International Holdings Inc. 65 patents | US company or organization | Seven Hills, OH | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Wyllys King Ingersoll, III | Montreat, NC | 3 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| H05B | Electric heating; electric light sources not otherwise provided for; circuit arrangements for electric light sources, in general | H05B7/20 | PVGPATDIS, file of 2026-04-10 |
| F27B | Furnaces, kilns, ovens or retorts in general; open sintering or like apparatus | F27B3/28 | PVGPATDIS, file of 2026-04-10 |
| F27D | Details or accessories of furnaces, kilns, ovens or retorts, in so far as they are of kinds occurring in more than one kind of furnace | F27D19/00 | 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 |
|---|---|---|---|---|---|
| 2024-12-23 | Security interest Security interest Security interest | GRAFTECH INTERNATIONAL HOLDINGS INC. signed 2024-12-23 | U.S. BANKS TRUST COMPANY, NATIONAL ASSOCIATION EDISON, NJ | 72905/832 | ECORSEXC, file of 2026-09-25 |
| 2024-12-23 | Security interest Security interest Security interest | GRAFTECH INTERNATIONAL HOLDINGS INC. signed 2024-12-23 | U.S. BANKS TRUST COMPANY, NATIONAL ASSOCIATION EDISON, NJ | 72905/497 | ECORSEXC, file of 2026-09-25 |
| 2024-12-23 | Release of security interest Termination and release of patent security agreement (reel 054724 frame 0588 and 063798 frame 0928) | U.S. BANK TRUST COMPANY signed 2024-12-23 | GRAFTECH INTERNATIONAL HOLDINGS INC. BROOKLYN HEIGHTS, OH | 69762/518 | ECORSEXC, file of 2026-09-25 |
| 2024-12-23 | Release of security interest Termination and release of patent security agreement (reel 064075 frame 0455) | U.S. BANK TRUST COMPANY signed 2024-12-23 | GRAFTECH INTERNATIONAL HOLDINGS INC. BROOKLYN HEIGHTS, OH | 69762/491 | ECORSEXC, file of 2026-09-25 |
| 2024-12-23 | Security interest Security interest Security interest | GRAFTECH INTERNATIONAL HOLDINGS INC. signed 2024-12-23 | GLAS AMERICAS LLC JERSEY CITY, NJ | 69666/444 | ECORSEXC, file of 2026-09-25 |
| 2023-06-27 | Security interest Security interest Security interest | GRAFTECH INTERNATIONAL HOLDINGS INC. signed 2023-06-26 | U.S. BANK TRUST COMPANY, NATIONAL ASSOCIATION, AS COLLATERAL AGENT CLEVELAND, OH | 64075/455 | ECORSEXC, file of 2026-09-25 |
| 2020-12-22 | Security interest Security interest Security interest | GRAFTECH INTERNATIONAL HOLDINGS INC. signed 2020-12-22 | U.S. BANK NATIONAL ASSOCIATION, AS AGENT CLEVELAND, OH | 54724/588 | ECORSEXC, file of 2026-09-25 |
| 2018-02-12 | Security interest Security interest Security interest | GRAFTECH INTERNATIONAL HOLDINGS INC. signed 2018-02-12 | JPMORGAN CHASE BANK, N.A., AS COLLATERAL AGENT BROOKLYN, NY | 45308/591 | ECORSEXC, file of 2026-09-25 |
| 2018-02-12 | Release of security interest Release of security interest | JPMORGAN CHASE BANK, N.A., AS COLLATERAL AGENT signed 2018-02-12 | GRAFTECH INTERNATIONAL HOLDINGS INC. BROOKLYN HEIGHTS, OH | 45308/567 | ECORSEXC, file of 2026-09-25 |
| 2015-06-10 | Security interest Security interest Security agreement | FIBER MATERIALS INC. signed 2015-05-22 GRAFTECH INTERNATIONAL HOLDINGS INC. signed 2015-05-22 | JPMORGAN CHASE BANK N.A., AS COLLATERAL AGENT NEW YORK, NY | 35839/754 | ECORSEXC, file of 2026-09-25 |
| 2013-01-23 | Assignment Assignment of assignor's interest | INGERSOLL, WYLLYS KING, III signed 2013-01-15 | GRAFTECH INTERNATIONAL HOLDINGS INC. PARMA, OH | 29679/851 | 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.